GRINNELL Model B303 Grooved End Butterfly Valves with Gear Operators or Lever-Lock Operators General Description

Transcription

1 Worldwide Contacts GRINNELL Model B Grooved End Butterfly Valves with Gear Operators or Lever-Lock Operators General Description The GRINNELL Model B Butterfly Valves provide for efficient control in piping systems of on/off or throttling/ balancing service, fluid flow, and bubble-tight shut-off. The valves are furnished with grooved ends for use with grooved couplings and can be easily adapted to flanged components utilizing GRINNELL Figure 7 and Figure 7H Class Flange Adapters. The Model B Butterfly Valve with Grade E EPDM Disc Seal is temperature rated from -ºF (-ºC) to +2ºF (+ºC). The 2 through 2 inch (DN through DN) Model B Butterfly Valve with Gear Operator is a self-locking, traveling nut gear operator (2 through inch) and segmented gearbox ( through 2 inch) type. It is equipped with adjustable stop screws to lock the valve at the full open and shut positions. The 2 through inch (DN through DN2) Model B Butterfly Valve (Ref. Figure 2) with Lever-Lock Operator has a throttling plate that provides throttling notches every º for manual control in balancing up to 9º or to shut off service. The Lever may be pad-locked in any one of the positions, including opened or closed, by virtue of a locking hole located in the handle and lever. The lever operation accoodates at least 2 inches of clearance for insulation (Ref. Figure 2 dimensions). Flow may be from either direction and the valve may be positioned in any orientation. The body and disc construction provides for increased strength and durability. The disc seal and body coatings are compatible with a variety of chemicals and temperature ranges. Contact your GRINNELL Representative for specific recoendations on seal and coating selections. NOTICE The GRINNELL Model B Butterfly Valves described herein must be installed and maintained in compliance with this document, in addition to the standards of any authorities having jurisdiction. Failure to do so may result in serious personal injury, impair the performance of these devices, or void the warranty. Never remove any tubing component nor correct or modify any tubing deficiencies without first de-pressurizing and draining the system. Failure to do so may result in serious personal injury, property damage, and/or impaired device performance. The designer is responsible for selecting products suitable for the intended service and to ensure that pressure ratings and performance data are not exceeded. Verify encapsulated disc material for compatibility with the specific application. Always read and understand the installation instructions. The owner is responsible for maintaining their mechanical system and devices in proper operating condition. Contact the installing contractor or product manufacturer with any questions. Page of 6 OCTOBER 26 G

2 G Page 2 of 6 Nominal Pipe Size ANSI DN O.D. Nominal Dimensions A B C D E F G H Approx. Weight Lbs. kg 2 DN 2.7 6,. 2, 2. 72,.2, ,.92 2,.9 7,2 2-/2 DN , 9. 27,.,.2,6. 77,.. 9,.92 2, 9.2,7 76, DN6. 76, 9. 27,.,.2,6. 77,.. 9,.92 2, 9.2,7 DN., ,. 9,.2, ,.92 2, 2. 9, DN.,.9 269,.29 9,.2,6. 2.., 6.7 7,.92 2, 2., 9,7 DN2. 9,7.2 29,.6,.79 7,.7 6, 7,9 2,.9, 2., DN2.6,.2 29,.6,.79 7, ,9 2,.9, 2., 6, DN 6. 6,.9,.7,.79 7, 7,.27, 2,.9,.7 6,2 6 DN ,.9,.7,.79 7, 7..27, 2,.9,.7 6,2 DN , 2.9 2, ,.9 2, ,.9 2, ,.6 22, , DN2.7 27,.72 7, 7.6 9,.9 2,. 27, ,.6,. 22,.6 22, 72., 2 DN 2.7 2,9. 2, 9. 2,.9 2,. 9, 6. 6, 2.7 6, 2.2,.6 22, 9.. Upper Stem Stainless Steel 2 Bearing Polyacetal 7 Dust Plug Nameplate Aluminium O-ring 9 Gear Operator Ductile Iron, Steel Body Ductile Iron RILSAN Coated Handwheel Ductile Iron Disc Ductile Iron Encapsulation per Table A Spring Pin Steel 6 Lower Stem Stainless Steel 2 Hex. Bolt Zinc-Plated Steel 2 C 9 H 2 G A B D F E FIGURE MODEL B GROOVED END BUTTERFLY VALVE WITH GEAR OPERATOR

3 G Page of 6 Nominal Pipe Size ANSI DN 2 DN 2-/2 DN6 76, DN6 DN DN 9,7 DN2 DN2 6, DN 6 DN DN2 O.D , 2.7 7,. 76,.,9.,. 9,7.6, 6. 6, ,.62 29, Nominal Dimensions A B C D E F G.6,.76 6,.76 6, 6.2, 7. 7, 7. 99, 7. 99,. 22,. 22, 9. 27, 2. 72,.,.,. 9,.29 9,.6,.6,.7,.7, , 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, ,. 7, , 2., 2. 9, 2.2 7,9 2.29, ,6 2. 9, 2.,7 2. 9,7 2.29, ,7 Approx. Weight Lbs. kg.,.,., 9.,.2 6, 9., 9., 2.,6 2.,6.,6 Upper Stem Stainless Steel 2 Bearing Polyacetal O-Ring Body Ductile Iron RILSAN Coated Disc Ductile Iron Encapsulation per Table A 6 Lower Stem Stainless Steel 7 Dust Plug Nameplate Aluminium 9 Handle Ductile Iron Lever Zinc-Plated Steel Throttle Plate Zinc-Plated Steel 2 Hex. Bolt Zinc-Plated Steel 2 Hex. Nut Zinc-Plated Steel 2 C 2 G A 9 B D F E FIGURE 2 MODEL B BUTTERFLY VALVE WITH LEVER-LOCK OPERATORS

4 G Page of 6 Technical Data Approvals The Model B Butterfly Valves conform to MSS SP-67 Sizes Gear Operator: 2 to 2 Inch (DN to DN) Lever Operator: 2 to Inch (DN to DN2) Maximum Working Pressure 2 to Inch (DN to DN2): psi (2,7 bar) to 2 Inch (DN2 to DN): 7 psi (2 bar) Operating Temperature Range See Table A Encapsulated Disc Material See Table A Materials of Construction Body: Ductile Iron conforming to ASTM A 6, Grade 6--2 Body Coating: RILSAN (PA), Black Disc: Ductile Iron conforming to ASTM A 9, Grade 6-- Upper and Lower Stem: Type Stainless Steel conforming to ASTM A79 Gear Operator: 2 to Inch bronze traveling nut gearbox in ductile iron housing. to 2 Inch segmented gearbox in ductile iron housing. Lever-Lock Operator: Handle... Polymer-Coated Iron Lever-Lock Zinc-Plated Steel Throttling Plate Zinc-Plated Steel Valve Operating Torque Torque is the rotary effort required to operate a valve. This turning force in a butterfly valve is determined by three factors: Friction of the disc to seat for sealing Bearing friction Dynamic torque Breakaway Torque is the total of the torques resulting from bearing friction and seat/disc interference friction at a given pressure differential. This value is normally the highest required torque to operate a valve and is used in sizing actuators. The torque values provided in Table B are valid for water and lubricating fluids at ambient temperature. For dry and non-lubricating fluids, contact a GRINNELL Technical Service representative. NOTES: Grade E EPDM (a) - F to 2 F - C to C Butterfly valves, sizes Inch and larger, when used on liquids, show a marked increase in dynamic torque that tends to close the valve. For this reason, gear operated or actuated valves are available. Encapsulated Disc Material Grade T Nitrile (b) -2 F to F -29 C to 2 C Grade O (c) -2 F to 2 F -29 C to 9 C a. Recoended for hot water, dilute acids, alkalis, oil free air, and many chemical services not involving petroleum products. Not recoended for hydrocarbons or steam service. b. Recoended for petroleum products, vegetable oils, mineral oils, and air with oils. High-end oil vapor temperature decreases to F (66 C). Not recoended for hot water or hot dry air systems. c. Recoended for oxidizing acids, petroleum products, hydraulic fluids, lubricants, halogenated hydrocarbons. Not recoended for hot water. Sizes ANSI DN 2 (DN) 2-/2 (DN6) 76, (DN6) (DN) (DN) 9,7 (DN2) (DN2) 6, (DN) 6 (DN) (DN2) (DN2) 2 (DN) O.D. 2.7 (6,) 2.7 (7,). (76,). (,9). (,). (9,7).6 (,) 6. (6,) 6.62 (6,).62 (29,).7 (27,) 2.7 (2,9) TABLE A MODEL B BUTTERFLY VALVE OPERATING TEMPERATURE RANGE psi 6,9 bar, , 99 22, 27 29, 6 2, 2, 2, 2 9, 2 9, 7 6,6 67, 7,9 * Torque values for in. (DN2) and 2 in. (DN) valves recorded at 7 psi (2, bar) instead of 2 psi (, bar). Torque Inch Lbs. Nm 2 psi, bar 7, 22 2, 22 2, 26 2,,2 97 6,2 97 6, , ,7 2, 26 * 26, 2 * 69, TABLE B MODEL B BUTTERFLY VALVE OPERATING TORQUE psi 2,7 bar 7 9, , 26 27,,9 7, 7 6,7 66, 66, 629 7, , The torque values provided in Table B apply to Grade E EPDM. When calculating torques for Nitrile or, multiply listed torque by.2.

5 G Page of 6 NOMINAL PRESSURE DROP IN POUNDS PER SQUARE INCH (PSI) FLOW RATE IN LITERS PER MINUTE (LPM) ( GPM =,7 LPM) INCH (DN) 2-/2 INCH (DN6) INCH (DN) INCH (DN) INCH (DN2) 6 INCH (DN) INCH (DN2) INCH (DN2) 2 INCH (DN),6,,,,2,,9,,7,6,,, NOMINAL PRESSURE DROP IN BAR ( PSI =,69 BAR) FLOW RATE IN GALLONS PER MINUTE (GPM) Note: It is good piping practice to apply a safety factor of % to 2% to the values in the above table for design purposes. GRAPH A 2 INCH (DN) THROUGH 2 INCH (DN) MODEL B BUTTERFLY VALVE NOMINAL PRESSURE DROP VERSUS FLOW Installation NOTICE All replacement parts must be obtained from the manufacturer to assure proper operation of the valve. In piping systems, butterfly valves should be located where operation, inspection, and maintenance are readily accessible. When a valve closes hard, it may be due to debris lodged in the sealing area. This may be corrected by backing-off the handle or handwheel and closing it again, several times if necessary. Never force the valve to seat by applying a wrench to the handwheel or extension to the lever, as it may distort the valve components or score the sealing surfaces. To prevent rotation of the valve, the Model B Butterfly Valve is recoended to be installed with rigid type couplings such as the GRINNELL Figure 772 Coupling. If flexible couplings are used, additional support may be needed to prevent rotation. Ordering Procedure Grinnell Mechanical Products, valves, accessories and other products are available globally through a network of distribution centers. For the nearest distributor, visit When placing an order, indicate the full product name. Model B Butterfly Valve Specify the following: Model B Size Quantity Type of Operator: Gear (2 to 2 inch) Lever (2 to inch) Type of Disc Seal: Grade E EPDM Grade T Nitrile Grade O

6 G Page 6 of 6 GLOBAL HEADQUARTERS Pennbrook Parkway, Lansdale, PA 96 Telephone Copyright 26 Tyco Fire Products, LP. All rights reserved. RILSAN is a registered trademark of Arkema, Inc.