Jo-Bell Products. DIVISION OF DALNOR SYSTEMS, INC Sierra Vista Drive Carlsbad NM, Phone: Fax:

Transcription

1 Jo-Bell Products DIVISION OF DALNOR SYSTEMS, INC Sierra Vista Drive Carlsbad NM, Phone: Fax:

2 Jo-Bell Products has been producing liquid level controls since 1947, and was orginally located in Oak Lawn, Illinois. It has an installed base of hundreds of thousands of products operating throughout the world. Jo-Bell was acquired in 2000 and moved to Carlsbad, New Mexico, where it now operates as a division of Dalnor Systems, Inc. From food to oil to nuclear applications, in environments from acidic salt to ordinary water, Jo-Bell has a solution to match your requirements. Jo-Bell engineering is available to customize products to your special needs and is continually improving its current product lines and processes. This catalog presents typical product offerings and is not intended to be all-inclusive. Dimensional drawings are available on our website: 2

3 Description: Internal Liquid Level Control - Type A * 2-1/2 NPT Mounting Connection * 8-3/4 Insertion * 1-1/2 to 5 Adjustable Differential Range * 0.8 Minimum Specific Gravity * 1/2 NPT Conduit Connection * Minimum Specific Gravity * Switch * Switch Housing * Insertion Length * Dog-Legged Float Rod The Type A is an internal service, horizontally mounted liquid level control. The control features include a field adjustable differential of 1-1/2" to 5", with options up to 23". The 2-1/2" NPT threaded control body will mount easily to the side of any tank or vessel. Models are available for service of 30, 300 or 500 psig and specific gravity as low as 0.5. Body: The threaded body is standard in brass or 316 SS, depending on the model selected. Float: A 2-1/2" round float is standard in copper clad. A 316 SS float is available at added cost. Trim: The float rod and its related hardware are standard in brass or 316 SS, depending on the model selected. Mounting: The connection is 2-1/2" NPT. The control must be installed through a half-coupling. A full coupling interferes with the operation of the float mechanism. Insertion Length: The standard insertion is 8-3/4" as measured from the face of the control to the end of the float(s). Minimum insertion is 6"; maximum insertion is 26-1/2". Differential: With the standard insertion, the field adjustable differential is 1-1/2" to 5". For greater differential, additional insertion length is required. By adding 1" of insertion, approximately 1/8" of differential is added. High level actuation will occur at approximately 1/2" above the centerline of the control. Differential adjustment changes the low level point only. Switch Housing: A NEMA 4 (water-tight and dust-tight) or NEMA 7 (explosion-proof) housing is available. Conduit Connection: 1/2" NPT. Special Construction: Low Specific Gravity: For application with specific gravity of 0.5 to 0.79, two (2) 2-1/2" round floats are supplied. The insertion length is not increased. Dog-Legged Float Rod: The float rod is bent so the high level point is below the face of the control. Typically the Type A should not be used with liquids containing magnetic particles and/or liquids which will build up on the face of the control. Optional Insertion Length from 6" to 26-1/2" Dog-Legged Float Rod Minimum Specific Gravity of 0.5 3

4 Description: Internal Liquid Level Control - Type AF & ASF * 4" Mounting Flange * 8-3/4" Insertion * 1-1/2" to 5" Adjustable Differential Range * Stainless Steel Float and Trim * 0.8 Minimum Specific Gravity * Minimum Specific Gravity * Switch, Switch Housing * Body, Float, Trim, Insertion Length * Dog-Legged Float Rod * Flange Size, Flange Material Types AF & ASF are internal service, horizontally mounted liquid level controls. They mount to a companion flange on the side of a tank or vessel. The controls feature a field-adjustable differential of 1-1/2" to 5" with options to 23". Models are available for service of 150 or 300 psig; operating temperature to 400 F; and specific gravity as low as 0.5. Flanges: Four inch 150# or 300# ANSI RF flanges are standard with the AF and ASF. The Type AF has a carbon steel flange; the type ASF a 316 SS flange. Flanges of other sizes (3" minimum) and material are available. Body: The 316 SS body is mounted to a threaded flange. Float: A 2-1/2" round float is standard in copper. A 316 SS float is available at added cost. Trim: The float rod and its related hardware are standard in brass or 316 SS, depending on the model selected. Mounting: The Types AF and ASF will mount to a mating flange on the tank or vessel. Insertion Length: The standard insertion is 8-3/4" as measured from the face of the control to the end of the float(s). Minimum insertion is 6"; maximum insertion is 26-1/2". Differential: With the standard insertion, the field adjustable differential is 1-1/2" to 5". For greater differential, additional insertion length is required. By adding 1" of insertion, approximately 1" of differential is added. High level actuation will occur at approximately 1/2" above the centerline of the control. Differential adjustment changes the low level point only. Switch Housing: NEMA 4 (water-tight and dust-tight) or NEMA 7 (explosion-proof) housings are available. Conduit Connection: 1/2" NPT. Special Construction: Low Specific Gravity: For application with specific gravity of 0.5 to 0.79, two (2) 2-1/2" round floats are supplied. The insertion length is not increased. Dog-Legged Float Rod: The float rod is bent so the high level point is below the face of the control. Typically the Type AF and ASF should not be used with liquids containing magnetic particles and/or liquids which will build up on the face of the control. Optional Insertion Length from 6" to 26-1/2" Dog-Legged Float Rod Minimum Specific Gravity of 0.5 Flange Size from 3" Minimum 4

5 Liquid Level Control - Type BAC * Stainless Steel Float, Rod, Enclosing Tube & Frame * Teflon Coated 430 SS Actuator Piston * SPDT (NO/NC) Switch * 1/2" Male NPT Conduit Connection Description: The Type BAC is a liquid level float switch used on evaporative cooling units to give an electrical signal at a predetermined high or low water level. The float ball, float rod, enclosing tube and frame are all fabricated from 316 series stainless steel. The switch-actuating piston is fabricated of 430 stainless steel and Teflon coated. The unit is supplied with a SPDT switch allowing the wiring configuration to use normally open or normally closed contacts. Body: The open style body of the BAC is fabricated from 316 SS. Float: One 3-1/2" round 316 SS float is standard. Trim: The float rod and its related hardware are standard in 316 SS. Mounting: Two through holes are provided on 3" centers. Immersion Depth: The standard and minimum immersion depth is 6 inches. Maximum immersion is 14-1/2". Conduit Connection: 1/2" male NPT. 5

6 External Liquid Level Control - Type CB * Carbon Steel Float Chamber * 8-3/4" Insertion * Stainless Steel Float and Trim * 1" Process Connections * 1" Switch Differential * 3/4" NPT Conduit Connection * Removable ANSI-rated Head Flanges * NEMA 4X or 7/4X Switch Housing * Female, Socket Weld, or Flange Process Connections * Stainless Steel Float Chambers * SPDT, DPST or DPDT Switch Circuit * Multiple Switches * Electronic, Solid State, or Pneumatic Switching Operation * Minimum Specific Gravity to * Cooling Fins for High Temperature Applications up to 1000 F * Interface Operations * Wide Differential * Breather and Drain for NEMA 7/4X SwitchHousing * 1/2" NPT or M20 Conduit Connection Description: The Type CB is an external service, side mounted liquid level control. Models are available for service to 800 PSIG; operating temperature to 1000 F with cooling fins; and specific gravity as low as The many optional and special constructional features make the Type CB practical for a wide range of applications. Float Chamber: The chamber is standard in carbon steel pipe. At extra cost, it can be supplied in 304 or 316 SS. Contact the factory for availability of, and quotation for, other materials. The float chambers have a flange removable head. See the Type S if all-welded construction is required (for operating pressures above 800 psig). Chamber Gasket: A flexitallic gasket is standard. Float: Float material is standard in 316 SS. Trim: The trim, which includes the float rod with its related hardware and the enclosing tube assembly, is standard in 316 SS. Process Connections and Mounting: The standard connections are 1" located on the side and bottom having an 11-1/2" centerline dimension. Male connections usually ease field installation by eliminating the need for an extra union. Other connections are available as follows: female, socket weld, or flange. Refer to the Dimensional Data for the standard centerline dimension of these connections. Specify in the RFQ if a different centerline dimension is required. All connections can be supplied in sizes up to 3". Differential: With a single switch, the standard differential is approximately 1". Wide differential options are available. Field adjustment of the actuating points can be made by raising or lowering the switch on the enclosing tube. Switch Housing: A NEMA 4X (water-tight, dust-tight, and corrosion-resistant) or NEMA 7/4X (explosion-proof and NEMA 4X) housing is available. Conduit Connection: 3/4" NPT 6

7 Special Construction: Wide Differential: For applications with a differential greater than provided by the standard model, the following options are available: 1) Tall Housing: With two (2) switches within a tall switch housing, up to 5" of differential can be obtained. Tall housings are not available for NEMA 7 A&B service. 2) GK Assembly: For a differential from 5" minimum to 24", the "GK" assembly can be used. This arrangement consists of two (2) separate NEMA 7 C&D (explosion-proof) switch housings, each containing one electrical switch. The distance, on the enclosing tube, between the horizontal centers of the housings is the differential distance. The distance is factory set, and cannot be adjusted. In order to accommodate the extended head of this design, the room above the tank mounting location must exceed the differential by at least 8". Switches for the "GK" assembly require a special enclosing tube mounting clamp due to the limited room in the smaller explosion-proof housing. Part numbers have been assigned to reflect the difference in clamps. The "GK" assembly can also be used for applications with three or more level points. Minimum distance between levels is 5". 3) Tandem Floats: A factory set wide differential of 10" minimum to 36" maximum can be obtained by using a tandem float arrangement. This design uses two (2) floats in an extended float chamber and two (2) switches in a standard switch housing. Each float has its own rod, piston and switch to actuate. The solid float rod of the lower float passes through the tube of the upper float. The lower float actuates the upper switch, and the upper float actuates the lower switch. 4) Sliding Piston: With this design, the piston travels along the rod, making contact with high and low-level stops. The magnet is strong enough to hold the piston in place while the liquid level raises and lowers the rod. The maximum differential with this design is 6". High Pressures: For float-type control applications with operating pressures of 1000 PSIG to 1500 PSIG and self-purging floats not being suitable, see the Type S. Note: Type CB level controls manufactured before March 1, 2000 might not match the current specifications. However, replacement controls can be built to retro-fit the existing, as long as a complete description is provided. The serial number and other nameplate data will aid in specifying replacement units. Optional Cooling Fins: For application with a process temperature above 400 F, up to 1000 F (depending on the switch selected), cooling fins are used to dissipate the heat which would otherwise be transmitted to the switches. Breathers and Drains: These can be supplied on NEMA 7 C&D explosion-proof housings. Two configurations are available: manual or universal. The latter design allows air circulation through the housing and is recommended when cooling fins are used. Interface: The controls are available for interface service. The difference in specific gravities between the two liquids must be 0.20 or more. The float for interface service is weighted in order to sink in the lighter liquid, but float in the heavier liquid. If the difference is between 0.12 and 0.19, a custom design is available. 7

8 External Liquid Level Control - Type F * Carbon Steel Chamber * Stainless Steel Float and Trim * 1/2" NPT Female Process Connections * 0.7 Minimum Specific Gravity * 3/4" NPT Conduit Connection for NEMA 7/4X Switch Housing * SPDT, DPST or DPDT Circuit * 250 or 1500 PSIG Models * 0.5 Minimum Specific Gravity * Stainless Steel Float Chambers * Breather and Drain for NEMA 7/4X Switch Housing * 1/2" NPT or M20 Conduit Connection Description: The Type F is an economical externally mounted liquid level control. It's ideally suited for applications where the control is located in a remote area or operated for extended periods while left unattended. The Type F provides the reliable performance needed with no maintenance. The ease of installation and economical price make replacement less costly than repair. Models are available for service of 250 or 1500 PSIG; operating temperature of 250 F and specific gravity of 0.7. Contact the factory for applications requiring 0.5 minimum specific gravity. Float Chamber: The all-welded body is constructed from carbon steel pipe. At extra cost, it can be supplied in 316 SS. Contact the factory for availability of, and quotation for, other materials. Float: A 316 SS float is provided. The 1500 PSIG unit is supplied with a self-equalizing float assembly. Trim: The float rod, its related hardware, and enclosing tube are 316 SS. Process Connections and Mounting: The Type F is mounted externally to the tank or vessel using 1/2" female connections located on the side and bottom. Differential: The difference between switch actuation and reset is approximately 1". The actuation point and differential cannot be adjusted. Switch Housing: A NEMA 4X (water-tight, dust-tight) or NEMA 7/4X (explosion-proof and NEMA 4X) is available. Conduit Connection: 3/4" NPT on NEMA 4X and NEMA 7/4X switch housings. Optional Specific Gravity: 0.5 minimum specific gravity operation is available according to application requirements. Breathers and Drains: These can be supplied on NEMA 7 C&D explosion-proof housings. Two configurations are available: manual or universal. The latter design allows air circulation through the housing and is recommended when cooling fins are used. Other Optional 250 or 1500 PSIG Models 1/2" NPT or M20 Conduit Connection 8

9 Description: Internal Liquid Level Control - Type FL * 4" 150# ANSI RF Carbon Steel Mounting Flange * Porcelain Displacers * 10 Feet 316 SS Cable * Inconel Spring * 3/4" NPT Conduit Connection * Other Mounting Flanges - Size, Rating, Material * 3" NPT Mounting Connection * Stainless Steel Displacers * SPDT, DPST or DPDT Switch Circuit * Pneumatic Switch Operation * NEMA 4X or 7/4X Switch Housing * Cable Length from 4 to 50 Feet * Multiple Switch Function * 1/2" NPT or M20 Conduit Connection The Type FL is a top mounted displacer control. The "FL" can be used in a wide variety of applications. This control is available for models with up to 3 switches and field adjustable differential. The "FL" can be used for applications with immersion depth to 50 feet. Mounting: The standard mounting connection is 4" 150# ANSI RF carbon steel flange. Other sizes (3" minimum), material and/or pressure ratings are available. The control can also be supplied with a 3" NPT connection. Displacers: Porcelain displacers are standard. Stainless steel is available at extra cost. Trim: The rod, spring, and related hardware are standard in 316 SS. The spring is standard in inconel. Immersion: Ten feet of cable is standard. Longer or shorter cables are available; from 4 feet to a maximum of 50 feet. Differential: The differential can be either narrow or wide, depending on the model selected. With the single stage control, the minimum differential is approximately 4". The location of the level points is adjustable. The minimum high level is 6". Switch Housing: A NEMA 4X (water-tight, dust-tight and corrosion-resistant) or NEMA 7/4X (explosion-proof and NEMA 4X) housing is available. Conduit Connection: 3/4" NPT Cable: Standard 10' 316 SS. See Options. Optional Other mounting flange, size, rating and/or material. 3" or 4 NPT connection. Cable length from 4 feet to 50 feet. 1/2" NPT or M20 conduit connection. Operation: The operation of a displacer control differs from a float control, because the operation is based on weight displacement rather than buoyancy. In the low level position, the weight of the displacers will expand the displacer spring and keep the actuating piston out of the magnetic zone of the switch. As the liquid rises, it begins to displace the weight of the displacers. The spring senses the weight change and will compress. In doing so, the spring will lift the actuating piston into the magnetic operating zone of the switch. When the level reaches the mid-point of the upper displacer, the switch will actuate. As the level descends, the switch will stay actuated until the level reaches the lower displacer. The weight of the displacers expands the spring, pulling the piston out of the operating zone. 9

10 Internal Liquid Level Control - Type KC Description: * 1" NPT Mounting Connection * Stainless Steel Wetted Parts * 1" Switch Differential * # 3/4" NPT Conduit Connection * Flange Mounting * SPDT, DPST or DPDT Switch Circuit * Multiple Switches * Pneumatic Switch Operation * NEMA 4X or 7/4X Switch Housing * Cooling Fins for High Temperature Applications * Float Size * Breather and Drain for NEMA 7/4X Switch Housing * Wide Differential * Immersion Length as Required * 1/2" NPT or M20 Conduit Connection The Type KC is a versatile internal service, top mounted liquid level control. With its many optional features, the "KC" can be used for a wide variety of applications. Its simple mounting makes it adaptable to many installations. Float: The float will vary in shape and diameter depending on the specific gravity of the liquid, and the immersion length. The standard float material is 316 SS. Trim: The trim is the float rod and its related hardware. These are standard in 316 SS. Mounting: The standard connection is 1" NPT, mounting on the tank or vessel top. When installing, the float must be removed, the control inserted into the vessel and the float re-attached. Flange mounting is an optional feature. A suitable flange will allow installation of the control without removal and reassembly of the float. Immersion Length: The standard immersion is 12" as measured from the bottom of the mounting threads or face of the flange, if applicable, to the bottom of the float. The control can be set to a specific high or low level point. These points are also measured from the bottom of the mounting threads and must be specified in the RFQ. Immersion length to 36" is cataloged. Longer lengths are available. Differential: With a single switch, the standard differential is approximately 1". Wide differential options are available. Field adjustment of the actuating points can be made by raising or lowering the switch on the enclosing tube. Switch Housing: A NEMA 4X (water-tight, dust-tight, and corrosion-resistant) or NEMA 7/4X (explosion-proof and NEMA 4X) housing is available. Conduit: 3/4" NPT. Optional Cooling Fins: For application with a process temperature above 400 F or 600 F (depending on the switches selected), cooling fins are used to dissipate the heat which would otherwise be transmitted to the switches. Removable Float Assembly: In viscous liquids, frequent cleaning may be required. To facilitate this as well as prevent damage to the control while cleaning, the float assembly can be removable. When this option is supplied with the 1" NPT mounting connection, the control will be suitable for atmospheric pressure. Flange mounted controls are typically supplied with this option. 10

11 Special Construction: Wide Differential: For applications with a differential greater than provided by the standard model, the following options are available: 1) Tall Housing: With two (2) switches within a tall switch housing, up to 5" of differential can be obtained. Tall housings are not available for NEMA 7 A&B service. 2) GK Assembly: For a differential from 5" minimum to 24", the "GK" assembly can be used. This arrangement consists of two (2) separate NEMA 7 C&D (explosion-proof) switch housings, each containing one electrical switch. The distance, on the enclosing tube, between the horizontal centers of the housings is the differential distance. The distance is factory set, and cannot be adjusted. In order to accommodate the extended head of this design, the room above the tank mounting location must exceed the differential by at least 8". Switches for the "GK" assembly require a special enclosing tube mounting clamp due to the limited room in the smaller explosion-proof housing. The basic switch is the same as those used on the standard models. The "GK" assembly can also be used for applications with three or more level points. Minimum distance between levels is 5". 3) Sliding Piston: With this design, the piston travels along the rod, making contact with high and low-level stops. The magnet is strong enough to hold the piston in place while the liquid level raises and lowers the rod. The maximum differential with this design is 6". 11

12 Description: Internal Liquid Level Control - Type KT * 4" 150# ANSI RF Carbon Steel Mounting Flange * Stainless Steel Float and Trim * Two Electrical Switches * Factory Set Level Points * Minimum Specific Gravity of 0.7 * 3/4" NPT Conduit Connection * Other Mounting Flanges - Size, Rating & Material * NEMA 4X or 7/4X Switch Housing * SPDT, DPST or DPDT Switch Circuit * Cooling Fins for High Temperature Applications * Immersion to 100" * Breather and Drain for NEMA 7/4X Switch Housing * 1/2" NPT or M20 Conduit Connection The Type KT is a top mounted, internal service, tandem float for wide differential applications. Each control has two electrical switches and two floats. Each float has its own switch to actuate. The solid rod of the lower float passes through the tube of the upper float. The lower float actuates the upper switch, and the upper float actuates the lower switch. The factory set differential can range from 10" to 92". Models are available for service to 150 psig, operating temperature to 1,000 F with cooling fins, and specific gravity as low as 0.7. Flange: The standard mounting flange is 4" 150# ANSI RF carbon steel. Contact the factory for quotation on custom and other flanges. Floats: All floats are standard in 316 SS. Depending on the specific gravity of the liquid, and the immersion depth, the size and diameter of the floats will vary. Trim: The float rod and tube assemblies, float guide and enclosing tube assembly are standard in 316 SS. Level Points and Immersion: The level points are factory set and cannot be changed or adjusted in the field. The minimum high level is 4" below the face of the mounting flange. The maximum low level is 96". The minimum distance between level points is 10". The immersion depth is the distance from the face of the mounting flange to the bottom of the lower float in the down position. This length will be approximately 4" longer than the low level point. Switch Housing: A NEMA 4X (water-tight, dust-tight and corrosive-resistant) or NEMA 7/4X (explosion-proof and NEMA 4X) housing is available. Conduit: 3/4" NPT. Optional Cooling Fins: For applications with a process temperature above 750 F (depending on the switches selected), cooling fins are used to dissipate the heat which would otherwise be transmitted to the switches. Breathers and Drains: These can be supplied on explosion-proof housings. Two configurations are available: manual or universal. The latter design allows air circulation through the housing and is recommended when cooling fins are used. Switch Operation: Rather than the standard high and low level service operation, the switches can be set for high and high/high or low and low/low service. This must be specified in the RFQ. Other: The Type KT is not limited to 150 psig maximum pressure or 0.75 minimum specific gravity. 12

13 Description: Internal Liquid Level Control - Type MT * Stainless Steel Body, Float, & Trim * 1/4" Fixed Differential * 1/2 NPT Conduit Connection * NEMA 7/4X Switch Housing * 1" to 2" Mounting Connection * NEMA 7 Gr. A&B Switch Housing * SPDT or DPDT Switch Circuit * Minimum Specific Gravity to 0.6 * Operating Pressure to 600 PSIG * Operating Temperature 400 F * Float Size * 3/4 or 1 NPT Conduit Connection The Type MT is a compact liquid level control designed for 1" or 2" NPT connection. The Models MT-1 and MT-2 are for internal service; the MT-2TA (see Special Construction) is for mounting outside the tank or vessel. Body: The threaded body of the control is 316 SS. Float: The MT-1 has a 1" x 6" 316 SS float. The MT-2 uses a 1-7/8" x 3-1/2" 316 SS float. Trim: The trim, rod, associated hardware, and all the counterweight assembly is 316 SS. Mounting: The mounting connection is 1" or 2" NPT, depending on the model selected. The control must be installed through a half-coupling. A full coupling interferes with the operation of the float mechanism. Insertion Length: The distance from the face of the control to the end of the float is 7-1/2" for the MT-1 and 4-1/4" for the MT-2. Differential: The differential is approximately 1/4" depending on the specific gravity. The differential is fixed, and cannot be adjusted. High level switching occurs when the liquid is at approximately the horizontal center of the control. Switch Housing: Dual rated, NEMA 7/4X (explosion-proof Groups C & D, and water-tight, dust-tight, corrosiveresistant). Conduit Connection: A 1/2" NPT connection is standard. 3/4" or 1" NPT connections are available. Special Construction: Flange Mounting: The controls can be supplied with flanges for mounting to a companion on the side of the tank or vessel. The minimum standard flange sizes are 3" 150# ANSI flange for the MT-1 and 3" 300# ANSI flange for the MT-2. Model MT-2TA: This model is an external unit supplied with an MT-2 mounted in the branch of a 2" malleable iron tee. Process connections are 2" NPT female, top and bottom. These connections can be reduced without affecting the operational characteristics of the control. Forged steel and cast steel are available on request and subject to factory quote. The construction features, and service conditions, are the same as the MT-2 described above. 13

14 External Liquid Level Control - Type R * Cast Iron Float Chamber * 3/4" NPT Top/Bottom Process Connections * 1/2" NPT Conduit Connection * Fixed 3/4" Differential * 0.8 Minimum Specific Gravity Description: * NEMA 4 or 7 Switch Housing * SPDT or DPDT Switch Circuit * Brass Float Chamber * 1" NPT Process Connection * 1-1/4" Differential * 0.6 Minimum Specific Gravity * 30, 100 or 250 PSIG Models The Type R is an externally mounted, single point liquid level control. The body style, with its top and bottom process connections, allow easy installation using straight-through piping. Models are available for service of 30, 150 or 250 PSIG with an operating temperature up to 500 F and specific gravity as low as 0.6. Float Chamber: The float chamber is cast iron. A brass chamber is available for 30 and 150 psig models. Refer to the Type CB if other materials are required. Float: A 2-1/2" round float is standard in copper or 316 SS, depending on the model selected. Mounting and Process Connections: The control is mounted externally to the tank or vessel using 3/4" NPT female connections located on the top and bottom of the chamber. One inch NPT connections are available at added cost. Mounting: The standard connection is 3/4" NPT, top and bottom. Differential: The fixed differential is 3/4". The switch actuation point is not adjustable. At extra cost, a fixed 1-1/4" differential can be provided. Switch Housing: A NEMA 4 (water-tight and dust-tight) or NEMA 7 (explosion-proof) housing is available. Conduit Connection: 1/2" NPT. Special Construction: Low Specific Gravity: A special float is available for applications with specific gravity of 0.6 to Other 1-1/4" Differential 1" NPT Process Connections Minimum Specific Gravity of

15 External Liquid Level Control - Type S * Carbon Steel Float Chamber * Stainless Steel Float and Trim * 1" Process Connections * All Welded Chamber for Models Rated 1000 PSIG & More * 1" Switch Differential * 3/4" NPT Conduit Connection * NEMA 4X or 7/4X Switch Housing * Male, Socket Weld or Flange Process Connections * Stainless Steel Float Chambers * SPDT, DPST or DPDT Switch Circuit * Multiple Switches * Electronic, Solid State, or Pneumatic Switching Operation * Minimum Specific Gravity to * Cooling Fins for High Temperature Applications up to 1000 F * Interface Operations * Wide Differential * Breather and Drain for NEMA 7/4X Switch Housing * 1/2" NPT or M20 Conduit Connection Description: The Type S is an external service, side mounted liquid level control. The S is used for applications having operating pressures of 1000 to 3000 PSIG. A special design of the Type S is used for interface service between liquids with specific gravity differences between 0.12 and Models are available for service to 3000 PSIG; operating temperature to 1000 F, and specific gravity as low as The many optional and special constructional features make the Type S practical for a wide range of applications. Float Chamber: The welded chamber is standard in carbon steel pipe. At extra cost, it can be supplied in 316 SS. Contact the factory for availability of, and quotation for, other materials. Float: Float material is standard in 316 SS. Trim: The trim, which includes the float rod with its related hardware and the enclosing tube assembly, is standard in 316 SS. Process Connections and Mounting: The standard connections are 1" located on the side and bottom having an 11-1/2" centerline dimension. Male connections usually ease field installation by eliminating the need for an extra union. Other connections are available as follows: female, socket weld or flange. Refer to the Dimensional Data for the standard centerline dimension of these connections. Specify in the RFQ if a different centerline dimension is required. All connections can be supplied in sizes up to 2". Differential: With a single switch, the standard differential is approximately 1". Wide differential options are available. Field adjustment of the actuating points can be made by raising or lowering the switch on the enclosing tube. Switch Housing: A NEMA 4X (water-tight, dust-tight) or NEMA 7/4X (explosion-proof and NEMA 4X) housing is available. Conduit Connection: 3/4" NPT 15

16 Special Construction: Wide Differential: For applications with a differential greater than provided by the standard model, the following options are available: 1) Tall Housing: With two (2) switches within a tall switch housing, up to 5" of differential can be obtained. Tall housings are not available for NEMA 7 A&B service. 2) GK Assembly: For a differential from 5" minimum to 24", the "GK" assembly can be used. This arrangement consists of two (2) separate NEMA 7 C&D (explosion-proof) switch housings, each containing one electrical switch. The distance, on the enclosing tube, between the horizontal centers of the housings is the differential distance. The distance is factory set, and cannot be adjusted. In order to accommodate the extended head of this design, the room above the tank mounting location must exceed the differential by at least 8". Switches for the "GK" assembly require a special enclosing tube mounting clamp due to the limited room in the smaller explosion-proof housing. Part numbers have been assigned to reflect the difference in clamps. The "GK" assembly can also be used for applications with three or more level points. Minimum distance between levels is 5". 3) Tandem Floats: A factory set wide differential of 10" minimum to 36" maximum can be obtained by using a tandem float arrangement. This design uses two (2) floats in an extended float chamber and two (2) switches in a standard switch housing. Each float has its own rod, piston and switch to actuate. The solid float rod of the lower float passes through the tube of the upper float. The lower float actuates the upper switch, and the upper float actuates the lower switch. 4) Sliding Piston: With this design, the piston travels along the rod, making contact with high and low-level stops. The magnet is strong enough to hold the piston in place while the liquid level raises and lowers the rod. The maximum differential with this design is 6". High Pressures: For float-type control applications with operating pressures of 1000 PSIG to 1500 PSIG and self-purging floats not being suitable, see the Type S. Note: Type CB level controls manufactured before March 1, 2000 might not match the current specifications. However, replacement controls can be built to retro-fit the existing, as long as a complete description is provided. The serial number and other nameplate data will aid in specifying replacement units. Optional Cooling Fins: For application with a process temperature above 400 F, up to 1000 F (depending on the switch selected), cooling fins are used to dissipate the heat which would otherwise be transmitted to the switches. Breathers and Drains: These can be supplied on NEMA 7 C&D explosion-proof housings. Two configurations are available: manual or universal. The latter design allows air circulation through the housing and is recommended when cooling fins are used. Interface: The controls are available for interface service. The difference in specific gravities between the two liquids must be 0.20 or more. The float for interface service is weighted in order to sink in the lighter liquid, but float in the heavier liquid. If the difference is between 0.12 and 0.19, a custom design is available. External Displacer: For low level applications where the operating pressure is 1000 PSIG or more, an external displacer control can be used. The displacer differs from the float control because the operation is based on weight displacement rather than buoyancy. In the low level position, the weight of the displacer will expand the displacer spring and keep the actuating piston out of the magnetic operating zone of the switch. As the liquid rises, it begins to displace the weight of the displacer. The spring senses the weight change, and will compress. In doing so, the spring will lift the actuating piston into the magnetic operating zone of the switch. As the level descends, the switch will remain actuated until the weight of the displacer expands the spring, pulling the piston out of the operating zone. The maximum operating temperature is 1000 F with cooling fins. Other Optional Process Connection - Male, Flange, or Socket Weld Process Connection Location Process Connection Size Wiring Terminal Block Pneumatic Switches 1/2" NPT or M20 Conduit Connection 16

17 Liquid Level Control - Type WB * Used for Rainfall Detection * Switch actuates after 1/10" of rainfall * 14" Diameter Funnel with Debris Screen * NEMA 4 Switch Housing * 1/2" NPT Conduit Connection * Stainless Steel Float Chamber and Funnel * Red/Green Light Indicators * 120VAC Solenoid Drain Valve * 316 SS Ball Drain Valve * Detection Range From 1/10" to 1" of rainfall Description: The Model WB is a special purpose level switch designed for use with sewer diversion and automated irrigation systems. The WB gives an electrical signal after a given amount of rain has fallen. This signal is used to divert storm water away from the normal water treatment facilities and into the storm sewer system, or to activate a sump pump. The signal can also be used to omit an irrigation cycle for country clubs, agriculture firms, or others that are affected by rain. Particularly valuable for large expanses of land where localized storms might cover one area, but not another. By use of rain switches in different areas, the irrigation system will operate only in those areas where rainfall did not occur. Unless otherwise specified, the electrical signal will be given after 1/10" of rain falls. However, at extra cost, the WB can be specified to activate at any point between 1/10" and 1" of rainfall. The switch point is fixed and cannot be changed in the field. 17

18 Switch Packages Type W Jo-Bell switches feature tough, precision, snap-action dry contacts contained within a compact, non-ferrous canister. The switch mechanism is hermetically sealed and subsequently, is not affected by atmospheric elements. Heaters are not needed even in cryogenic applications. Jo-Bell switches are compact, rugged, self-contained and designed to withstand vibration Type V Switch Package Cross Reference List Old Designation New Designation Switch Element Available Units Switch Type V (CAN) Type W (CASE) Type Y (Special) BA3WP L , -2, -3 BAC FGZA2WP L L CB,F,FL,KC,KT,S FGZA3WP L CB,F,FL,KC,KT,S FGZD2WP L L CB,F,FL,KC,KT,S FGZD3WP L CB,F,FL,KC,KT,S FZA2WP L L ,-2,-3 CB,F,FL,KC,KT,S FZA3WP L CB,F,FL,KC,KT,S FZD2WP L L ,-2,-3 CB,F,FL,KC,KT,S FZD3WP L CB,F,FL,KC,KT,S GZA2WP L L CB,F,FL,KC,KT,S GZA3WP L CB,F,FL,KC,KT,S GZD2WP L L CB,F,FL,KC,KT,S GZD3WP L CB,F,FL,KC,KT,S LA1MP L ,-2,-3 CB,F,FL,KC,KT,S LA9MP L ,-2,-3 CB,F,FL,KC,KT,S LD1MP L ,-2,-3 CB,F,FL,KC,KT,S RS3P L ,-2,-3 WB ZA2P L L ,-2,-3 A,AF,ASF,R ZA2WP L L ,-2,-3 CB,F,FL,KC,KT,S ZA3P L A,AF,ASF,R ZA3WM/T - - L CB,F,FL,KC,KT,S ZA3WP L CB,F,FL,KC,KT,S ZA4W - - L CB,F,FL,KC,KT,S ZD01WP L L ,-2,-3 CB,F,FL,KC,KT,S ZD2P L L ,-2,-3 A,AF,ASF,R ZD2WP L L ,-2,-3 CB,F,FL,KC,KT,S ZD3P L A,AF,ASF,R ZD3WP L CB,F,FL,KC,KT,S ZDC2WP L L ,-2,-3 CB,F,FL,KC,KT,S Pneumatic Switches GR4 BLOCK AND BLEED VENT TO ATMOSPHERE GR5 NO/NC VENT TO ATMOSPHERE GR6 NO/NC VENT TO CLOSED SYSTEM 18

19 -1 Operating Temp: Contacts: Approvals: Electrical: -2 Operating Temp: Contacts: Approvals: Electrical: (Default unless otherwise specified) -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; 24VDC -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; 24VDC The ZA-4W is a Single Pole, Double Throw, Normally Open / Normally Closed switch with a maximum operating temperature of 800 F. Electrical Ratings: 3 Amps, 1/ VAC 2 Amps, 1/5 250 VDC ZA4W -3 Operating Temp: Contacts: Approvals: Electrical: -13 to 257 Deg F Silver Cadmium Oxide UL/ENEC/COC/cUL 250VAC; 125VAC; 24VDC -4 Operating Temp: Contacts: Approvals: Electrical: -5 Operating Temp: Contacts: Approvals: Electrical: -6 Operating Temp: Contacts: Approvals: Electrical: -7 Operating Temp: Contacts: Approvals: Electrical: -40 to 392 Deg F Silver UL/CSA 250VAC; 125VAC; 24VDC -40 to 350 Deg F Gold UL/CSA 125VAC; 24VAC; -85 to 500 Deg F Silver 1A INDUCTIVE LOAD, 3A RESISTIVE 28VDC -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; Pneumatic There is a limit of one (1) pneumatic switch per control. The switch can be set to vent on either high level or low level. The air ports are marked A, B or C. Air connections can be made as described below: PORT VENT ON HIGH LEVEL VENT ON LOW LEVEL A VENT IN B IN VENT C OUT OUT Switch Specifcations: Temperature range: -20 to 250 F Supply pressure: 2 to 150 psi Cv: Approx. 0.4 Orifice equivalent: 9/16 diam. Flow rate (Max.): psi -8 Operating Temp: Contacts: Approvals: Electrical: -9 Operating Temp: Contacts: Approvals: Electrical: -1 Operating Temp: Contacts: Approvals: Electrical: -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; -40 to 180 Deg F Silver UL/CSA 277VAC; 125VAC; The ZA3WM/T is a Single Pole, Double Throw, Normally Open / Normally Closed switch with a maximum operating temperature of 500 F. Electrical Ratings: 3 28 VDC (400 cycle) ZA3WM/T 19

20 Jo-Bell Products Division of Dalnor Systems, Inc Sierra Vista Drive Carlsbad NM, Phone: Fax: