Temperature Regulator I-1284-B through G Series (Bronze Valve Body)
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- Silas Baldwin
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1 Sales Manual Section 35 PRODUCT SPECIFICATION I-284-B, C, D, E, F, G GENERAL DESCRIPTION The I-284-B through G Series Temperature Regulators are compact, self-contained and self-powered, three-way control valves especially adaptable to control of water and lubricating oil temperatures on internal combustion engines. The POWER PILL element, located inside the poppet assembly, responds to the temperature of the medium surrounding it and provides the force necessary to position the poppet as the temperature of the liquid passing through the valve changes. Temperature regulation is achieved by the proportional action of the three-way valve which varies the amount of medium through or bypassing the cooler to maintain the desired temperature. Operation of the POWER PILL elements is unaffected by pressure changes in the system. The POWER PILLS are factory-set for the specified control temperature and are not manually adjustable. By exchange of POWER PILL elements, the operating temperature may be changed in a very simple manner. Since all internal parts lift out with the valve bonnet, it is not necessary to remove the valve from the piping. The I-284 series is equipped with a quick-acting manual operator which permits overriding the thermal element if and when abnormal load, conditions are encountered in the system. SPECIFICATIONS CONSTRUCTION Valve Body... Bronze, ASTM B62, with 50 lb. ANSI flanges. Trim...Cast brass with integral seating surfaces. Packing...Teflon* continuous filament fiber rings. Poppet Seal...Split Buna-N "O"-ring (General Purpose). OPERATING RANGES: Available temperature ranges are tabulated below. MAXIMUM VALVE BODY PRESSURE RATINGS: 2", 2 /2", 3", 4"; 0.3 bar (50 psi) at 2 C. (250 F.). 5", 6"; 6.9 bar (00 psi) at 2 C. (250 F.). PROOF PRESSURE: 0.3 bar (50 psi) at room temperature. CAUTION: DO NOT EXCEED MAXIMUM TEMPERATURE/PRESSURE RATING. Temperature Regulator I-284-B through G Series (Bronze Valve Body) I SIZE CODE SIZE B 2" C 2 /2" D 3" E 4" F 5" G 6" RANGE CODE NORMAL OPERATING CODE TEMPERATURE AT MIDSTROKE, C. ( F.) 8 49 (20 ) 54 (30 ) 5 60 (40 ) 4 66 (50 ) 5 68 (55 ) 0 7 (60 ) 74 (65 ) 2 77 (70 ) 2 79 (75 ) 3 82 (80 ) 8 85 (85 ) 7 88 (90 ) (200 ) SPECIAL 24 6 (60 ) 6 24 (75 ) (80 ) (90 ) 9 38 (00 ) (0 ) 2 57 (35 ) NOTE: For cast steel valve body, refer to I-284-P, Q, S, and T (Form P-2330). DIMENSIONS...See Figure. SHIPPING WEIGHTS... See Page 2. *Dupont Company registered tradename. Form P-225, Rev. E
2 Figure VALVE DIMENSIONS, mm SHIPPING SIZE MODEL A g C D F G H J K L WGT., Kg I-284-B 2" I-284-C 2 /2" I-284-D 3" I-284-E 4" I-284-F 5" I-284-G 6"
3 VALVE DIMENSIONS, In. SHIPPING SIZE MODEL A B C D F G H J K L WGT., Lbs. I-284-B 2" 5 6 /2 8-5/8 4 3/4 4-3/4 5-3/6 8 6-/2 62 I-284-C 2 /2" 6-3/4 7 9/ /4 5-/2 6-/2 0 7-/8 72 I-284-D 3" 7 7-/2 5/8 0-/2 4 3/ /4 2 7-/ E 4" 8-3/6 9 /6 5-7/8 8 3/4 7-/2 8-9/6 4 -/4 44 I-284-F 5" 25-/4 0 3/4 9-/4 8 7/8 8-/2-5/8 6 3-/2 220 I-284-G 6" 27-/2 3/6 23-/2 8 7/8 9-I/2 3-7/6 8 5-/2 280 INSTALLATION General Prior to installation, the valve body and parts should be checked to determine if any damage occurred in shipment. Any damage should be reported to the shipper as soon as possible. Foreign matter which may have entered the valve during packing or shipment should be removed. Location The I-284 may be installed indoors or out, provided the liquid to be controlled does not freeze. Temperature regulators should be installed as near as possible to the unit being controlled, and a pipeline strainer should be installed upstream. Position Although these valves will operate in any position, the best performance is achieved in the vertical position (E port down). When the four, five, or six inch regulators are to be installed up-side-down, the factory should be notified so that a special load spring may be supplied. (See Parts List.) Service Unless otherwise specified on the order, regulators are shipped with a general purpose (Buna-N) split "O"-ring installed. Whenever synthetic* lube oils or special coolants are used, the factory should be consulted to determine compatibility with split "O"-ring material. *Not recommended for use with ester base synthetic lubricant. TYPICAL PIPING SCHEMATICS - USED AS DIVERTING VALVE TO CONTROL TEMPERATURE LEAVING ENGINE: PREFERRED AND MOST COMMON APPLICATIONS Figure 2 3
4 OPERATION With low temperature liquid surrounding the Power-Pill, the poppet is in the upward position which connects ports "E" and "B." As the temperature increases, the Power-Pill stem extends forcing the poppet downward. When the temperature reaches the control point of the regulator, the valve will be at mid-stroke. If the temperature continues to increase, the poppet will continue to move downward until the by-pass port (B) is completely closed off. (See Figure 4.) On the I-284 a manual crank is provided to override Power-Pill control. Turning the crank counterclockwise moves the poppet upward to close the "C" port. The "B" port may be closed by turning the crank clockwise. In event of Power-Pill failure, the crank should be turned clockwise until the desired cooling is achieved. FLOW COEFFICIENTS: Table below indicates the flow in U.S. g.p.m. at different pressure drops. C v Coefficients are listed in column under.069 bar ( psi) pressure drop (water). SIZE PORT C - Cooler Port 242 (64) 345 (9) 46 (0) 488 (29) 545 (44) 598 (58) 2" B - Bypass Port 242 (64) 34 (90) 420 () 485 (28) 54 (43) 594 (57) E - Mid Stroke 30 (82) 439 (6) 538 (42) 62 (64) 693 (83) 76 (20) 2 /2" C - Cooler Port 333 (88) 473 (25) 575 (52) 666 (76) 746 (97) 84 (25) B - Bypass Port 307 (8) 435 (5) 530 (40) 63 (62) 685 (8) 749 (98) E - Mid Stroke 386 (02) 435 (5) 670 (77) 776 (205) 867 (229) 946 (250) 3" C - Cooler Port 405 (07) 572 (5) 704 (86) 80 (24) 920 (239) 992 (262) B - Bypass Port 439 (6) 62 (64) 76 (20) 878 (232) 984 (260) 075 (284) E - Mid Stroke 428 (3) 72 (88) 878 (232) 007 (266) 24 (297) 234 (326) 4" C - Cooler Port 992 (262) 40 (370) 78 (454) 983 (524) 228 (586) 2426 (64) B - Bypass Port 920 (243) 298 (343) 594 (42) 840 (486) 2056 (544) 2252 (595) E - Mid Stroke 227 (324) 730 (457) 22 (56) 2453 (648) 2755 (725) 3005 (794) 5" C - Cooler Port 544 (408) 280 (576) 2672 (706) 3089 (86) 3444 (9) 3785 (000) B - Bypass Port 378 (364) 949 (55) 2388 (63) 2756 (728) 3085 (85) 3376 (892) E - Mid Stroke 893 (500) 2676 (707) 3274 (865) 3785 (000) 4239 (20) ) 6" C - Cooler Port 2324 (64) 3278 (866) 402 (060) 4648 (228) 5204 (375) 5696 (505) B - Bypass Port 968 (520) 2830 (735) 3407 (900) 3936 (040) 440 (65) 4826 (275) E - Mid Stroke 2650 (700) 3747 (990) 4580 (20) 5299 (400) 5942 (570) 650 (720) NOTE : C v coefficients coincide with figures in first column. NOTE 2: Data on "Mid Stroke" shows total flow through inlet with valve in mid position. NOTE 3: Normally, for engine application, valve should be sized for total flow through cooler port, based on a pressure drop of bar (2-5 psi) incl. NOTE 4: Total leakage through seats and web, approximately 2% or less of total flow with O-Ring removed. 4
5 MAINTENANCE WARNING: USE CARE WHEN DISASSEMBLING - SPRING FORCES PRESENT. Recommended Spare Parts The following parts should be kept on hand for maintenance purposes:. Split "O"-ring seal. 2. Replacement Power-Pills. 3. Bonnet gasket. 4. Stem packing. Trouble Shooting If valve fails to make required stroke as temperature exceeds control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See Service," Page 3.) 3. Power-Pill failure. If valve fails to return stroke as temperature drops below control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See Service," Page 3.) 3. Damaged load spring. 4. Power-Pill failure. Excessive internal leakage between ports:. Damaged or worn out split "O"-ring seal. (See Service," Page 3.) 2. Damaged or uneven valve seats. 3. Poppet not making complete stroke. Repair Replacing Power-Pill elements:. Remove bonnet and poppet assembly from valve and place on wooden blocks. (See Figure 3.) 2. Loosen the packing gland and remove the bonnet from the poppet assembly completely by turning the stem clockwise and removing crank. 3. Loosen the bolts on top of the poppet and remove the stem and retainer by lifting upward. 4. Power-Pills and overrun assemblies may now be removed. 5. Reassemble as shown in Figures 4 through 0, depending on valve size. Replacing split "O"-ring seal:. Remove bonnet and lift out the entire poppet assembly. 2. Remove old split "O"-ring and replace with a new one. (See "Service," Page 3.) 3. Replace poppet assembly, taking care not to cut or pinch ring. Adjusting the I-284. Reassemble the poppet assembly, bonnet and frame. 2. Reset the bottom of the poppet on blocks. (See Figure 3.) 3. Turn crank clockwise until bonnet seating surface just lifts off seating surface. 4. Turn the crank counterclockwise one-half to one turn so that the poppet is securely seated. 5. Set indicator at "thermostatic" on indicator plate and tighten nuts. 6. Complete assembly is now ready to install in valve body. Repair Parts For replacement part numbers, consult the parts list, pages 6 and 7. When ordering give complete model number, spare part name and number, with quantity required. Figure 3 5
6 DETAIL NO. DESCRIPTION I-284-B 2" I-284-C 2 /2" I-284-D 3" I-284-E 4" I-284-F 5" I-284-G 6" Cap Screw 3667-E E E E E E300 2 Nut Indicator Packing Stud Packing Nut E E E E E E220 6 Packing Gland Packing A A A A AI A 8 Crank Frame B B 9 Crank 0670-A 0670-A 0670-A 0670-A 0670-A 0670-A 0 Washer Gasket D D D E E E5 2 Bonnet Cap Screw B B B B B B Valve Body A Spring Retainer 305-D 305-D 305-D 305-D 305-B 305-B *6 Load Spring 9983-A 9863-A 9863-A 9863-A B B 7 Indicator Plate (Shown) 9874-B 9874-B 9874-B 9874-B 9874-B 9874-B 8 Indicator Plate (Back Side) 9875-B 9875-B 9875-B 9875-B 9875-B 9875-B 9 Flat Spring 20 Poppet Assy. Split O-Ring 2 General Purpose *Springs for inverted valve service See Fig.5 & Table See Fig. 6 & Table Figure 4 See Fig. 7 & Table See Fig. 8 & Table See Fig. 9 & Table See Fig. 0 & Table A A A A A A2 282-B B B 6
7 Figure 5 2" Size Figure 6 2 /2" Size Figure 7 3" Size Figure 8 4" Size DETAIL NO. All Table DESCRIPTION I-284-B 2" Figure 9 5" Size I-284-C 2 /2" I-284-D 3" I-284-E 4" Figure 0 6" Size I-284-F 5" I-284-G 6" Complete Poppet Assembly 826-E 826-F 826-G 826-N 826-C 826-D Stem D A E A B C 2 Retainer B B B A A A 3 Retainer Ring J J J J J J 4 Cap Screw E E E E E E504 5 Lock Washer L L L L L L092 6 Poppet and Pipe Assembly 8259-C 8259-C C A 8259-B 8259-B2 7 Top Spring and Stem Assembly 8258-B 8258-A 8258-A 8258-A I 8258-A 8258-A 8 Thermo Assembly A A A A A A 9 Spacer A A 0 Spring A A Bottom Spring and 8258-C l 8258-D Stem Assembly *2 Load Spring 9863-A 9863-A B B 3 Spring Retainer I 305-D 305-D 305-B 305-B 4 Drive Screw A A A A *Springs for inverted valve service B B Add suffix number to Thermo Assembly and/or Poppet Assembly per range code on Page. EXAMPLE: Thermo Assembly A for 65 F. setpoint. 7
8 U.S.A. and CANADA Robertshaw Industrial Products Division 602 Mustang Drive Maryville, Tennessee 3780 Phone: (865) Fax: (865) Exports Invensys Appliance Controls 70 Byrd Avenue P.O. Box Richmond, Virginia Phone: (804) Fax: (804) Q-3082 (4/04) Printed in U.S.A.
9 Sales Manual Section 35 PRODUCT SPECIFICATION TEMPERATURE REGULATOR I-284-P, Q, S, T Series General Description The I-284-P, Q, S & T Series Temperature Regulators are compact, self-contained and self-powered, three-way control valves especially adaptable to control of water and lubricating oil temperatures on internal combustion engines. The POWER PILL element, located inside the poppet assembly, responds to the temperature of the medium surrounding it and provides the force necessary to position the poppet as the temperature of the liquid passing through the valve changes. Temperature regulation is achieved by the proportional action of the three-way valve which varies the amount of medium through or bypassing the cooler to maintain the desired temperature. Operation of the POWER PILL elements is unaffected by pressure changes in the system. The POWER PILLS are factory-set for the specified control temperature and are not manually adjustable. By exchange of POWER PILL elements, the operating temperature may be changed in a very simple manner. Since all internal parts lift out with the valve bonnet, it is not necessary to remove the valve from the piping. The I-284 series is equipped with a quick-acting manual operator which permits overriding the thermal element if and when abnormal load conditions are encountered in the system. Specifications A. CONSTRUCTION Valve Body...Cast steel with 50 lb. ANSI flanges. Trim...Brass poppet with integral steel seating surfaces. Packing... Teflon* continuous filament fiber rings. Poppet Seal... Split Buna-N "O"-ring (General Purpose). Dimensions - See Figure 2. * Registered tradename of the Dupont Co. B. OPERATING RANGES Available temperature ranges are tabulated below. The maximum valve body rating is 50 psi at 250 F. WARNING: DO NOT EXCEED MAXIMUM TEMPERATURE/PRESSURE RATING. C. MODELS AVAILABLE* MODEL NO. CODE SIZE P 3" Q 4" S 5" T 6" I P 4 NORMAL OPERATING TEMPERATURE AT MID-STROKE, F. STANDARD SPECIAL CODE TEMP. CODE TEMP *NOTE: For cast brass valve body, refer to I-284-B thru G Series. Form P-2330, Rev. D
10 Installation A. GENERAL Prior to installation, the valve body and parts should be checked to determine if any damage occurred in shipment. Any damage should be reported to the shipper as soon as possible. Foreign matter which may have entered the valve during packing or shipment should be removed. B. LOCATION The I-284 may be installed indoors or out, provided the liquid to be controlled does not freeze. Temperature regulators should be installed as near as possible to the unit being controlled, and a pipeline strainer should be installed upstream. C. POSITION Although these valves will operate in any position, the best performance is achieved in the vertical upright position (E port down). When the four, five, or six inch regulators are to be installed up-side-down, the factory should be notified so that a special load spring may be supplied. (See Parts List). D. SERVICE Unless otherwise specified on the order, regulators are shipped with a general purpose (Buna- N) split "O"-ring installed Whenever synthetic* lube oils or special coolants are used, the factory should be consulted to determine compatibility with split "O"-ring material. *Not recommended for use with estar base synthetic lubricant. PIPING SCHEMATIC - USED AS DIVERTING VALVE TO CONTROL TEMPERATURE LEAVING ENGINE: MOST COMMON APPLICATION. PIPING SCHEMATIC - USED AS BLENDING VALVE TO CONTROL TEMPERATURE ENTERING ENGINE. Figure 2
11 Operation With low temperature liquid surrounding the POWER PILL, the poppet is in the upward position which connects ports "E" and "B." As the temperature increases, the POWER PILL stem extends forcing the poppet downward. When the temperature reaches the control point of the regulator, the valve will be at mid-stroke. If the temperature continues to increase, the poppet will continue to move downward until the by-pass port (B) is completely closed off. (See Figure 4.) On the I-284 a manual crank is provided to override POWER PILL control. Turning the crank counterclockwise moves the poppet upward to close the "C" port. The "B" port may be closed by turning the crank clockwise. In event of power pill failure, the crank should be turned clockwise until the desired cooling is achieved. FLOW COEFFICIENTS: Table below indicates the. flow in U.S. G.P.M. at different pressure drops. C v Coefficients are listed in column under psi pressure drop (water). PORT SIZE C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke NOTE : NOTE 2: NOTE 3: NOTE 4: Cv coefficients coincide with figures in first column. Data on "Mid-Stroke" shows total flow through inlet with valve in mid position. Normally for engine application, valve should be sized for total flow through cooler port, based on a pressure drop of 2-5 psi (incl.) Total leakage through seats and web, approximately 2% or less of total flow with 0-Ring removed. 3
12 Dimensions Figure 2 VALVE MODEL DIMENSION SIZE, In. A B C D F G H M X I-284-P 3 6-/2 7-/2 3/6 0-/2 4 3/ /4 2 I-284-Q 4 8-9/6 9 5/6 5-7/8 8 3/4 7-/2 8-9/6 4 I-284-S /8 0 5/6 9-/4 8 7/8 8-/2-5/8 6 I-284-T /2 8 7/8 9-/2 3-7/6 8 4
13 Maintenance A. RECOMMENDED SPARE PARTS The following parts should be kept on hand for maintenance purposes:. Split "O"-ring seal. 2. Replacement power pills. 3. Bonnet gasket. 4. Stem packing. B. TROUBLE SHOOTING If valve fails to make required stroke as temperature exceeds control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 2.) 3. Power pill failure. If valve fails to return stroke as temperature drops below control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 2.) 3. Damaged load spring. 4. Power pill failure. Excessive internal leakage between ports:. Damaged or worn out split "0"-ring seal. (See "Service," Page 2.) 2. Damaged or uneven valve seats. 3. Poppet not making complete stroke. C. REPAIR WARNING: DISASSEMBLE CAREFULLY SPRING LOAD FORCES PRESENT. Replacing power pill elements:. Remove bonnet and poppet assembly from valve and place on wooden blocks. (See Figure 3.) 2. Loosen the packing gland and remove the bonnet from the poppet assembly completely by turning the stem clockwise and removing crank. 3. Loosen the bolts on top of the poppet and remove the stem and retainer by lifting upward. 4. Power pills and overrun assemblies may now be removed. 5. Reassemble as shown in Figures 4 through 7, depending on valve size. Replacing split "O"-ring seal:. Remove bonnet and lift out the entire poppet assembly. 2. Remove old split "O"-ring and replace with a new one. (See Service," Page 2.) 3. Replace poppet assembly, taking care not to cut or pinch ring. D. ADJUSTING THE I-284. Reassemble the poppet assembly, bonnet and frame. 2. Rest the bottom of the poppet on blocks. (See Figure 3.) 3. Turn crank clockwise until bonnet seating surface just lifts off the poppet seating surface. 4. Turn the crank counterclockwise one-half to one turn so that the poppet is securely seated. 5. Set indicator at "thermostatic" on indicator plate and tighten nuts. 6. Complete assembly is now ready to install in valve body. Figure 3 E. REPAIR PARTS For replacement part numbers, consult the parts list, Pages 6 and 7. When ordering give complete model number, spare part name and number, with quantity required. Ordering Information: Specify Model including suffix. 5
14 Parts List Figure 5 3" & 4" Sizes Figure 6 5" Size Figure 7 6" Size DETAIL I-284-P I-284-Q I-284-S I-284-T DESCRIPTION NO. 3" 4" 5" 6" *All Complete Poppet Assembly 826-L 826-H 826-K 826-J Stem J F H G 2 Retainer B A Al Al 3 Retainer Ring J J J J 4 Cap Screw E E E E504 5 Lock Washer L L L L092 6 Poppet & Pipe Assembly 8259-C A 8259-B 8259-B2 7 Top spring & Stem Assy A 8258-A 8258-A 8258-A *8 Thermo. Assembly A A A A 9 Spacer A A 0 Spring 9863-A 9863-A B B Bottom Spring & Stem Assy C 8258-D 2 Drive Screw A A A A 3 Retainer, Spring 305-D 305-D 305-B 305-B 4 Spring A A *Add suffix number to Thermo Assembly and /or Poppet Assembly per range code on Page. EXAMPLE: Thermo Assembly Al l for 65 F. setpoint. 6
15 Parts List Figure 4 DETAIL I-284-P I-284-Q I-284-S I-284-T DESCRIPTION NO. 3" 4" 5" 6" Cap Screw 3667-E E E E300 2 Nut Indicator I Packing Stud Packing Nut E E E E220 6 Packing Gland 9868-B 9868-B 9868-B 9868-B 7 Packing A A A A 8 Crank Frame B B 9 Crank 0670-A 0670-A 0670-A 0670-Al 0 Washer Gasket F F F F3 2 Bonnet 9964-B 9859-B B B 3 Cap Screw E E B B323 4 Valve Body & Seat Ring 870-B A A A3 5 Spring Retainer 305-D I 305-D 305-B I 305-B *6 Load Spring 9863-A 9863-A B B 7 Indicator Plate (Shown) 9874-B 9874-B 9874-B 9874-B 8 Indicator Plate (Back Side) 9875-B 9875-B 9875-B 9875-B 20 Poppet Assembly See Fig. 5 See Fig. 5 See Fig. 6 See Fig. 7 2 Split O-Ring General Purpose D F Fl *Springs for inverted valve service 282-B B B 7
16 U.S.A. and CANADA Robertshaw Industrial Products Division 602 Mustang Drive Maryville, Tennessee 3780 Phone: (865) Fax: (865) Exports Invensys Appliance Controls 70 Byrd Avenue P.O. Box Richmond, Virginia Phone: (804) Fax: (804) Q-3588 (9/03) Printed in U.S.A.
17 Sales Manual Section 35 PRODUCT SPECIFICATION I-285-B, C, D, E, F, G GENERAL DESCRIPTION GENERAL DESCRIPTION The I-285-B through G Series Temperature Regulators are compact, self-contained and self-powered, three-way control valves especially adaptable to control of water and lubricating oil temperatures on internal combustion engines. The Power-Pill element, located inside the poppet assembly, responds to the temperature of the medium surrounding it and provides the force necessary to position the poppet as the temperature of the liquid passing through the valve changes. Temperature regulation is achieved by the proportional action of the three-way valve which varies the amount of medium through or bypassing the cooler to maintain the desired temperature. Operation of the Power-Pill elements is unaffected by pressure changes in the system. The Power-Pills are factory-set for the specified control temperature and are not manually adjustable. By exchange of Power-Pill elements, the operating temperature may be changed in a very simple manner. Since all internal parts lift out with the valve bonnet, it is not necessary to remove the valve from the piping. SPECIFICATIONS CONSTRUCTION Valve Body...Bronze, ASTM B62, with 50 lb. ANSI flanges. Trim... Cast Brass with integral seating surfaces. Poppet Seal...Split Buna-N "O"-Ring (General Purpose). OPERATING RANGES: Available temperature ranges tabulated below. MAXIMUM VALVE BODY RATING: 0.3 bars (50 psi) on 2", 2 /2", 3", and 4"; 6.9 bar (00 psi) on 5" and 6" at 2 C (250 F). PROOF PRESSURE: 0.34 bars (50 psi) at room temperature. CAUTION: Do Not Exceed Maximum Temperature-Pressure Rating. SHIPPING WEIGHTS: See Page 3. ORDERING INFORMATION Specify:. Model 2. Poppet Seal Temperature Regulator I-285-B through G Series (Bronze Valve Body) I SIZE CODE SIZE B 2" C 2 /2" D 3" E 4" F 5" G 6" RANGE CODE NORMAL OPERATING CODE TEMPERATURE AT MIDSTROKE, C. ( F.) 8 49 (20 ) 54 (30 ) 5 60 (40 ) 4 66 (50 ) 5 68 (55 ) 0 7 (60 ) 74 (65 ) 2 77 (70 ) 2 79 (75 ) 3 82 (80 ) 8 85 (85 ) 7 88 (90 ) (200 ) SPECIAL 24 6 (60 ) 6 24 (75 ) (80 ) (90 ) 9 38 (00 ) (0 ) 2 57 (35 ) NOTE: For cast steel valve body, refer to I-285-P, Q, S, and T (Form P-233). Form P-226, Rev. E
18 Figure VALVE DIMENSIONS, mm SHIPPING SIZE MODEL A B C D F G H J K L WGT., Kg I-285-B 2" I-285-C 2 /2" I-285-D 3" I-285-E 4" I-285-F 5" I-285-G 6"
19 VALVE DIMENSIONS, In. SHIPPING SIZE MODEL A B C D F G H J K L WGT., Lbs. I-285-B 2" 9-/2 6 /2 8-5/8 4 3/4 4-3/4 5-3/6 6 6-/2 62 I-285-C 2 /2" 0-/2 7 9/ /4 5-/2 6-/2 8 7-/8 72 I-285-D 3" 0-3/4 7-/2 5/8 0-/2 4 3/ /4 0 7-/4 82 I-285-E 4" 2-3/6 9 /6 5-7/8 8 3/4 7-/2 8-9/6 2 -/4 44 I-285-F 5" 7-9/6 0 3/4 9-/4 8 7/8 8-/2-5/8 4 3-/2 220 I-285-G 6" 9 3/6 23-/2 8 7/8 9-/2 3-7/6 6 5-/2 280 INSTALLATION General Prior to installation, the valve body and parts should be checked to determine if any damage occurred in shipment. Any damage should be reported to the shipper as soon as possible. Foreign matter which may have entered the valve during packing or shipment should be removed. Location The I-285 may be installed indoors or out, provided the liquid to be controlled does not freeze. Temperature regulators should be installed as near as possible to the unit being controlled, and a pipeline strainer should be installed upstream. Position Although these valves will operate in any position, the best performance is achieved in the vertical upright position (E port down). When the four, five, or six inch regulators are to be installed up-side-down, the factory should be notified so that special load spring may be supplied. (See Parts List) Service Whenever synthetic* lube oils or special coolants are used, the factory should be consulted to determine compatibility with split O-Ring material. * Not recommended for use with ester base synthetic lubricant. TYPICAL PIPING SCHEMATICS - USED AS DIVERTING VALVE TO CONTROL TEMPERATURE LEAVING ENGINE: PREFERRED AND MOST COMMON APPLICATIONS Figure 2 3
20 OPERATION - See Figure 4 With low temperature liquid surrounding the Power-Pill, the poppet is in the upward position which connects ports "E" and "B" and closes the connection between ports "E" and "C." As the temperature increases, the Power-Pill stem extends forcing the poppet downward. When the temperature reaches the control point of the regulator, the valve will be at mid-stroke. If the temperature continues to increase, the poppet will continue to move downward until the by-pass port (B) is completely closed off and the cooler port (C) is completely open. FLOW COEFFICIENTS: Table below indicates the flow in U.S. g.p.m. at different pressure drops. C v Coefficients are listed in column one under.069 bar ( psi) pressure drop (water). SIZE PORT C - Cooler Port 242 (64) 345 (9) 46 (0) 488 (29) 545 (44) 598 (58) 2" B - Bypass Port 242 (64) 34 (90) 420 () 485 (28) 54 (43) 594 (57) E - Mid Stroke 30 (82) 439 (6) 538 (42) 62 (64) 693 (83) 76 (20) 2 /2" C - Cooler Port 333 (88) 473 (25) 575 (52) 666 (76) 746 (97) 84 (25) B - Bypass Port 307 (8) 435 (5) 530 (40) 63 (62) 685 (8) 749 (98) E - Mid Stroke 386 (02) 435 (5) 670 (77) 776 (205) 867 (229) 946 (250) 3" C - Cooler Port 405 (07) 572 (5) 704 (86) 80 (24) 920 (239) 992 (262) B - Bypass Port 439 (6) 62 (64) 76 (20) 878 (232) 984 (260) 075 (284) E - Mid Stroke 428 (3) 72 (88) 878 (232) 007 (266) 24 (297) 234 (326) 4" C - Cooler Port 992 (262) 40 (370) 78 (454) 983 (524) 228 (586) 2426 (64) B - Bypass Port 920 (243) 298 (343) 594 (42) 840 (486) 2056 (544) 2252 (595) E - Mid Stroke 227 (324) 730 (457) 22 (56) 2453 (648) 2755 (725) 3005 (794) 5" C - Cooler Port 544 (408) 280 (576) 2672 (706) 3089 (86) 3444 (9) 3785 (000) B - Bypass Port 378 (364) 949 (55) 2388 (63) 2756 (728) 3085 (85) 3376 (892) E - Mid Stroke 893 (500) 2676 (707) 3274 (865) 3785 (000) 4239 (20) ) 6" C - Cooler Port 2324 (64) 3278 (866) 402 (060) 4648 (228) 5204 (375) 5696 (505) B - Bypass Port 968 (520) 2830 (735) 3407 (900) 3936 (040) 440 (65) 4826 (275) E - Mid Stroke 2650 (700) 3747 (990) 4580 (20) 5299 (400) 5942 (570) 650 (720) NOTE : C v coefficients coincide with figures in first column. NOTE 2: Data on "Mid Stroke" shows total flow through inlet with valve in mid position. NOTE 3: Normally, for engine application, valve should be sized for total flow through cooler port, based on a pressure drop of bar (2-5 psi) incl. NOTE 4: Total leakage through seats and web, approximately 2% or less of total flow with O-Ring removed. 4
21 MAINTENANCE Recommended Spare Parts The following parts should be kept on hand for maintenance purposes:. Split "O"-ring seal. 2. Replacement Power-Pills. 3. Bonnet gasket. Trouble Shooting If valve fails to make required stroke as temperature exceeds control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 3.) 3. Power-Pill failure. If valve fails to return stroke as temperature drops below control point, check for.'. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 3.) 3. Damaged load spring. 4. Power-Pill failure. Excessive internal leakage between ports:. Damaged or worn out split "O"-ring seal. (See "Service," Page 3.) 2. Damaged or uneven valve seats. 3. Poppet not making complete stroke. Repair Replacing Power-Pill elements:. Remove bonnet and poppet assembly from valve and place on wooden blocks. (See Figure 3.) 2. Loosen the bolts on top of the poppet and remove the stem and retainer by lifting upward. 3. Power-Pills and overrun assemblies may now be removed. 4. Reassemble as shown in Figures 4 through 9, depending on valve size. Replacing split "O"-ring seal:. Remove bonnet and lift out the entire poppet assembly. 2. Remove old split "O"-ring and replace with a new one. (See "Service," Page 3.) 3. Replace poppet assembly, taking care not to cut or pinch ring. Adjustments. Rest the bottom of the poppet on blocks. (See figure 3.) 2. Loosen stem locknut on inside of bonnet. 3. Place bonnet on the poppet assembly and adjust the stem until poppet just touches seating surface on the bonnet. 4. Turn the stem into the bonnet one-half to one turn so that poppet is securely seated. 5. Tighten locknut and bend the tab on lockwasher. 6. The poppet and bonnet assemblies are now ready to install in the body. Repair Parts For replacement part numbers, consult the parts list, pages 6 and 7. When ordering give complete model number, spare part name and number, with quantity required. Figure 3 5
22 Figure 4 DETAIL I-285-B I-285-C I-285-D I-285-E I-285-F I-285-G DESCRIPTION NO. 2" 2 /2" 3" 4" 5" 6" Cap Screw B B B B B B Bonnet Gasket D D D E E E5 4 Valve Body Al Spring Retainer 305-D 305-D 305-D 305-D 305-B 305-B 6 Locknut Lock Washer Stem *9 Load Spring 9983-Al 9863-A 9863-Al 9863-Al B B 0 Poppet Assembly Split O-Ring General Purpose *Springs for inverted valve service See Fig. 5 & Table See Fig. 6 & Table See Fig. 6 & Table See Fig. 7 & Table See Fig. 8 & Table See Fig. 9 & Table A A A A A A2 282-B B B 6
23 Figure 6 2", 2 /2", 3" Size Figure 7 4" Size Figure 8 5" Size Figure 9 6" Size DETAIL NO. DESCRIPTION I-285-B 2" I-285-C 2 /2" I-285-D 3" I-285-E 4" I-285-F 5" I-285-G 6" All Complete Poppet Assembly 8257-D 8257-S S S B 8257-C 4 Poppet and Pipe Assembly 8259-C 8259-C C A B 8259-B2 5 Top Spring and Stem Assembly 8258-B 8258-A 8258-A 8258-A 8258-A 8258-A 6 Thermo Assembly A A A A A A 7 Spacer A A 8 Spring A A 9 Bottom Spring and Stem Assembly 8258-C 8258-D 0 Drive Screw A A A A A Spring Retainer 305-D 305-D 305-D 305-B 305-B *2 Load Spring 9863-A 9863-A 9863-A B B *Springs for inverted valve service Add suffix number to Thermo Assembly and/or Poppet Assembly per range code on Page. EXAMPLE: Thereto Assembly A for 65 F. setpoint B B 7
24 U.S.A. and CANADA Robertshaw Industrial Products Division 602 Mustang Drive Maryville, Tennessee 3780 Phone: (865) Fax: (865) Exports Invensys Appliance Controls 70 Byrd Avenue P.O. Box Richmond, Virginia Phone: (804) Fax: (804) Q-40 (7/0) Printed in U.S.A.
25 Sales Manual Section 35 PRODUCT SPECIFICATION I-285-P, Q, S, T General Description The I-285-P, Q, S & T Series Temperature Regulators are compact, self-contained and self-powered, three-way control valves especially adaptable to control of water and lubricating oil temperatures on internal combustion engines. The POWER PILL element, located inside the poppet assembly, responds to the temperature of the medium surrounding it and provides the force necessary to position the poppet as the temperature of the liquid passing through the valve changes. Temperature regulation is achieved by the proportional action of the three-way valve which varies the amount of medium through or bypassing the cooler to maintain the desired temperature. Operation of the POWER PILL elements is unaffected by pressure changes in the system. Temperature Regulator I-285-P, Q, S, T Series The POWER PILLS are factory-set for the specified control temperature and are not manually adjustable. By exchange of POWER PILL elements, the operating temperature may be changed in a very simple manner. Since all internal parts lift out with the valve bonnet, it is not necessary to remove the valve from the piping. Specifications A. CONSTRUCTION Valve Body...Cast steel with 50 lb. ANSI flanges. Trim...Brass poppet with integral steel seating surfaces. Poppet Seal... Split Buna-N "O"-ring (General Purpose) Dimensions... See Figure B. OPERATING RANGES Available temperature ranges are tabulated below. The maximum valve body rating is 50 psi at 250 F. CAUTION: Do not exceed maximum temperature/pressure rating. C. MODELS AVAILABLE* MODEL NO. CODE SIZE P 3" Q 4" S 5" T 6" I S 8 NORMAL OPERATING TEMPERATURE AT MID-STROKE, F. STANDARD SPECIAL CODE TEMP. CODE TEMP *NOTE: For cast brass valve body, refer to I-285-B thru G Series. Form P-233, Rev. F
26 INSTALLATION A. GENERAL Prior to installation, the valve body and parts should be checked to determine if any damage occurred in shipment. Any damage should be reported to the shipper as soon as possible. Foreign matter which may have entered the valve during packing or shipment should be removed. B. LOCATION The I-285 may be installed indoors or out, provided the liquid to be controlled does not freeze. Temperature regulators should be installed as near as possible to the unit being controlled, and a pipeline strainer should be installed upstream. C. POSITION Although these valves will operate in any position, the best performance is achieved in the vertical upright position (E port down). When the four, five, or six inch regulators are to be installed up-side-down, the factory should be notified so that a special load spring may be supplied. (See Parts List). D. SERVICE Unless otherwise specified on the order, regulators are shipped with a general purpose (Buna- N) split "O"-ring installed. Whenever synthetic* lube oils or special coolants are used, the factory should be consulted to determine compatibility with split "O"-ring material. *Not recommended for use with ester base synthetic lubricant. VALVE MODEL SIZE. DIMENSION In. A B C D F G H M X I-285-P 3" -3/6 7-/2 3/6 0-/2 4 3/ /4 0 I-285-Q 4" 2-/2 9 5/6 5-7/8 8 3/4 7-/2 8-9/6 2 I-285-S 5" 7-7/8 0 5/6 9-/4 8 7/8 8-/2-5/8 4 I-285-T 6" 9-5/8 23- /2 8 7/8 9- /2 3-7/6 6 Figure 2
27 PIPING SCHEMATIC - Used as diverting valve to control temperature leaving engine, most common application. OPERATION With low temperature liquid surrounding the POWER PILL, the poppet is in the upward position which connects ports "E" and "B." As the temperature increases, the POWER PILL stem extends forcing the poppet downward. When the temperature reaches the control point of the regulator, the valve will be at mid-stroke. If the temperature Figure 2 PIPING SCHEMATIC - Used as blending valve to control temperature entering engine. continues to increase, the poppet will continue to move downward until the by-pass port (B) is completely closed off. (See Figure 4.) FLOW COEFFICIENTS: Table below indicates the flow in U.S. G.P.M. at different pressure drops. Cv Coefficients are listed in column under psi pressure drop (water). PORT SIZE C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke C - Cooler Port " B - Bypass Port E - Mid Stroke NOTE : C v coefficients coincide with figures in first column. NOTE 2: Data on "Mid-Stroke" shows total flow through inlet with valve in mid position. NOTE 3: Normally for engine application, valve should be sized for total flow through cooler port, based on a pressure drop of 2-5 psi (incl.) NOTE 4: Total leakage through seats and web, approximately 2% or less of total flow with O-Ring removed. 3
28 MAINTENANCE A. RECOMMENDED SPARE PARTS The following parts should be kept on hand for maintenance purposes:. Split "O"-ring seal. 2. Replacement power pills. 3. Bonnet gasket. B. TROUBLE SHOOTING If valve fails to make required stroke as temperature exceeds control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 2.) 3. Power pill failure. If valve fails to return stroke as temperature drops below control point, check for:. Foreign matter interfering with poppet travel. 2. Swollen or damaged split "O"-ring seal. (See "Service," Page 2.) 3. Damaged load spring. 4. Power pill failure. Excessive internal leakage between ports:. Damaged or worn out split "O"-ring seal. (See "Service," Page 2.) 2. Damaged or uneven valve seats. 3. Poppet not making complete stroke. C. REPAIR WARNING: Disassemble carefully - spring load forces present. Replacing power pill elements:. Remove bonnet and poppet assembly from valve and place on wooden blocks. (See Figure 3.) 2. Loosen the bolts on top of the poppet and remove the stem and retainer by lifting upward. 3. Power pills and overrun assemblies may now be removed. 4. Reassemble as shown in Figures 4 through 7, depending on valve size. Replacing split "O"-ring seal:. Remove bonnet and lift out the entire poppet assembly. 2. Remove old split "O"-ring and replace with a new one. (See "Service," Page 2.) 3. Replace poppet assembly, taking care not to cut or pinch ring. D. ADJUSTING THE I-285. Rest the bottom of the poppet on blocks. (See Figure 3.) 2. Loosen stem locknut on inside of bonnet. 3. Place bonnet on the poppet assembly and adjust the stem until the poppet just touches seating surface on the bonnet. 4. Turn the stem into the bonnet one-half to one turn so that the poppet is securely seated. 5. Tighten locknut and bend the tab on the lock washer. 6. The poppet and bonnet assemblies are now ready to install in the body. E. REPAIR PARTS For replacement part numbers, consult the parts list, Pages 5 and 6. When ordering give complete model number, spare part name and number, with quantity required. Ordering Information: Figure 3 Specify Model including suffix. 4
29 PARTS LIST Figure 4 DETAIL NO. DESCRIPTION I-285-P 3" I-285-Q 4" I-285-S 5" I-285-T 6" Cap Screw E E B B323 2 Bonnet & Seat Ring C 2089-B 2090-B 2090-B 3 Gasket F F F F3 4 Valve Body & Seat Ring 870-B A A A3 5 Locknut Lock Washer Stem Poppet Assembly See Fig. 5 See Fig. 5 See Fig. 6 See Fig. 7 9 Split "O" Ring General Purpose C F F 5
30 PARTS LIST (Cont'd) Figure 5 3" & 4" Sizes Figure 6 5" Size Figure 7 6" Size DETAIL NO. DESCRIPTION I-285-P 3" I-285-Q 4" I-285-S 5" I-285-T 6" *All Complete Poppet Assembly S0* S20* 8257-B* 8267-C* 4 Poppet & Pipe Assy C A B 8259-B2 5 Top Spring & Stem Assy A 8258-A 8258-A 8258-A *6 Thermo. Assembly A* A* A* A* 7 Spacer A A 8 Spring Al A 9 Bottom Spring & Stem Assy C 8258-D 0 Drive Screw A A A A Spring Retainer 305-D 305-D 305-B 305-B 2 Load Spring 9863-A 9863-Al B B Springs for inverted valve service B B *Add suffix number to Thermo Assembly and /or Poppet Assembly per range code on Page. EXAMPLE: Thermo Assembly Al l for 65 F. setpoint. U.S.A. and CANADA Robertshaw Industrial Products Division 602 Mustang Drive Maryville, Tennessee 3780 Phone: (865) Fax: (865) Exports Invensys Appliance Controls 70 Byrd Avenue P.O. Box Richmond, Virginia Phone: (804) Fax: (804) Q-438 (9/03) Printed in U.S.A.
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