sFLOW RATES OF 68 - 1200 USGPMsTAMPER-PROOF TEMPERATURESETTINGS OF 55°F - 240°FsCOMPLETELY SELF-CONTAINEDsPOSITIVE 3-WAY VALVE ACTIONsAVAILABLE IN CAST IRON, DUCTILEIRON, BRONZE, STEEL, ANDSTAINLESS STEELs1-1/2\" - 6\" PIPE SIZES: FLANGED, ANDTHREADED CONNECTION
APPLICATIONS
sENGINE & COMPRESSOR COOLINGSYSTEMsLUBE OIL SYSTEMS
sCOGENERATION HEAT RECOVERYLOOPSsPROCESS CONTROL
sTEMPERATURE MIXING OR DIVERTING
Model B
Thermostatic Valves
AMOT Model B Thermostatic Valves are fully automatic, 3-way fluid temperature control valves for diverting or mixingapplications. They provide reliable control of fluid tempera-tures in engine jacket water and lubrication oil coolingsystems. These valves are suitable for process control andindustrial applications where fluids must be mixed or di-verted depending on their temperatures. They may also beapplied to cogeneration systems to control temperatures inthe heat recovery loop assuring proper engine cooling andmaximizing heat recovery.
TAMPER-PROOF
As with other AMOT thermostatic valve the Model B utilizesfully enclosed, factory-set temperature element assemblieswhich provide tamper-proof operation. To change a valvesetting it is necessary to exchange the temperature elementassemblies inside the valve.
HIGH RESISTANCE TO SHOCK
Model B thermostatic valves display excellent reliabilityeven under extreme shocks or vibration and many modelshave been qualified to MIL-S-901 and MIL-V-19772.
MANUAL OVERRIDE
If desired, AMOT Model B thermostatic valves can besupplied with a manual override which allows the user todirect flows through Ports A and C. On valves equipped withthe manual override option, there is one manual overridedevice for each of the temperature element assemblies. Toengage the manual override function, flip the lever(s) 180˚from \"Auto\" to \"Manual\" position.
FORM 936
OPERATION
The valve is supplied with the temperature element assem-blies factory-set to the nominal temperature setting. Tem-perature is sensed at Port A which remains open to Port B(bypass) until the fluid temperature reaches a point 5 - 10°Fbelow the nominal setting. As the temperature continues torise, the sliding valve moves to close off Port B and openPort C (connected to the cooler or heat exchanger) Port Bis fully closed 8 - 10°F above the nominal setting. The valvecontinually modulates the fluid flow to maintain the nominaltemperature. For optimum control, the system should besized so about 1/2 the total fluid flow is passing through thecooler at full load.
For long life, AMOT Model B valves should not be exposedto continuous temperatures exceeding 25°F above theirnominal temperature setting. For occasional short periods(1/2 hour or less), they can be exposed to temperatures of50°F above their nominal temperature setting, but not toexceed 250°F maximum.
For higher over-temperatures, reduced stroke element as-semblies (5566X) are available. They will withstand continu-ous temperatures of 60°F above their nominal temperaturesetting but add 30% to the valve pressure drop. Reducedstroke elements are not available in all temperatures.
SELECTION
AMOT thermostatic valves are selected by the anticipatedflow rate through the valve. Refer to Fig. 1. Pressure dropacross the valve is usually limited to approximately 2 psi to7 psi to maintain good temperature regulation.
Threaded end connections are available on 1 1/2 and 2 inchsizes. Models with cast iron, ductile iron, or bronze housingshave ANSI 125 lb flat fare flanges. Steel or Stainless Steelhousings feature ANSI Class 150 or 300 raised face flanges.Metric connections also available.
Models with steel housings have ANSI 150 lb/300 lb Classcompatible raised face flanges.Versions available from USA factory.Cast Iron1-1/2BOCT1-1/2BHCT2BOCT2BHCT2BMCF2BCCF2BFCF2-1/2BOCF2-1/2BMCF3BOCF3BMCF4BECF4BOCF4BMCF5BOCF5BMCF6BOCF6BMCFDuctile Iron2BMDF2BFDF2-1/2BMDF3BODF4BEDF4BODF4BMDF5BODF5BMDF6BODF6BMDFBronze1-1/2BOBT2BOBT2BCBF2BFBF2-1/2BMBF3BOBF3BMBF4BEBF4BOBF4BMBF5BOBF5BMBF6BOBF6BMBFSteel2BCSJ2BCSH2BMSJ2BMSH2-1/2BOSJ2-1/2BMSJ3BOSJ3BMSJ3BOSHINSTALLATION
AMOT thermostatic valves operate in any position and maybe oriented at the convenience of the system designer. Inthe smaller sizes, the valve may be supported by theconnecting pipe but should not be subjected to excessivebending. Line up the piping before tightening the connectingbolts. Larger sizes should not be used to support long andheavy lengths of pipe nor used to draw up lengths of pipewhich have been fabricated too short.
If the valve is mounted at the high point of the system, thesystem should be properly vented to prevent trapping air atthe temperature element assemblies.
For piping diagrams regarding specific applications, refer toForm 913, AMOT Thermostatic Valves General Informa-tion.
Figure 1
Indicates Non-Standard
PIPING DIAGRAMS
MODELS BO, BC, BM
FOR MIXINGAPPLICATIONSFOR DIVERTINGAPPLICATIONSHotHeatExchangerPressure Drop -Pounds Per Square InchCold©CABMixedHeat SourceMODEL 1-1/2, 2, BO, BH, BF
BAFlow in U.S. Gallons Per Minute
Recommended pressure drop is 2 to 7 psi.
MixedHeat Source©©1-1/2B2B2-1/2B3B4B5B6B8B404075801602403605905560110120240360540770708014516032048072010308510018020040060090012701001202152404807201080154011514025028056084012601840
C©CAColdHeatExchanger©Hot©©CAB©By Pass©©BBy©Pass©SPECIFICATIONS
Internal Trim Materials.........Bronze and Stainless SteelStandard Seal Material........................................Buna NMax. Pressure Drop Across Valve..........20 psi (1.4 Bar)Valve Pressure Ratings at 250°F
Cast Iron, Ductile Iron, Bronze..............150 psi (10 Bar)Cast Iron, Model BH..............................340 psi (23 Bar)Steel, Class 150,...................................245 psi (17 Bar)Steel, Class 300,...................................665 psi (46 Bar)Stainless Steel Class 150,.....................228 psi (15 Bar)Stainless Steel Class 300,......................590 psi (41Bar)Shipping Weights:1-1/2BO/2BO1-1/2BH/2BH1-1/2BM2BC, BM2BF2-1/2B3B4B5B6BHOW TO ORDER
(Refer to Model Code System Below.)When ordering please specify the following:1.2.3.4.5.6.Valve size connection (see Table A).Valve Type (see Table B).
Housing material (see Table C).
Type of End Connection (see Table D).Nominal temperature setting (see Table E).Any of the following special features if required:a)Viton or neoprene seals (instead of Buna N).b)Electroless Nickel plated temperature elementassembly.c)Element leak hole (see Table G).d)Reduced stroke element assembly for highover-temperature.This product may be ordered using the full description asshown above or by constructing a Model No. using theModel Code System below. For special requirements,contact the AMOT factory or your local representative.CastIron2532- -30355560135200270DuctileIron- -- -- -30355560135200270Bronze- -- -2535407580150240300Steel- -- -- -45- -7580- -- -- -MODEL CODE SYSTEM3BOCF16001- ___ - ( )Special Requirements, (MTO) Made-To-OrderElement Assembly Leak Hole, See Table GElement Assembly Type, See Table FTemperature Setting, See Table ETABLE AValve SizeInches(mm)1-1/222-1/234568(40)(50)(65)(80)(100)(125)(150)(200)TABLE BValve TypeCode No.BOStandardBMManual OverrideBCTee config, Flanged 1-1/2, 2\" onlyBFFlanged, 2\" onlyBH1-1/2, 2\" onlyBRManual override (UK)TABLE CBody MaterialCode No.MaterialCSBDRCast IronSteelBronzeDuctile IronStainlessSteelTABLE D*ConnectionsEnd TypeANSI B16.1 Class 125 FF FlangeANSI B16.5 Class 150 RF FlangeANSI B16.34 Class 300 RF FlangeND6 (Metric) FlangeND10 (Metric) FlangeND16 (Metric) FlangeNavy FlangeJIS 5K FF FlangeNPT ThreadedBSP-TR / JIS ThreadedSAE Threaded (straight thread, O-ring seal)TABLE GElement AssemblyLeak HoleCode SizeNo.Inches(mm)none(standard)ABCDEFGH1/2\"1/4\"3/8\"1/8\"1/16\"3/32\"3/16\"5/16\"(12.5)(6.4)(9.5)(3.2)(1.6)(2.4)(4.8)(7.9)Code No.FJHABCNPTVWTABLE ETemperature SettingCodeNominal Temp°F(°C)No.*055075090095100105110115120*130135140145*15015555759095100105110115120130135140145150155(13)(24)(32)(35)(38)(41)(43)(46)(49)(54)(57)(60)(63)(66)(69) TABLE E (Continued) Temperature Setting CodeNominal Temp°F(°C)No. 160165170175180185195205215225230235240160165170175180185195205215225230235240(71)(74)(77)(79)(83)(85)(91)(96)(102)(107)(110)(113)(116)Code No.010203071105444520125350TABLE FElement1096X1096P1096X2433X5566X6836S1096X1096P5566X5566P2433X6836KAssemblyTypeStandardPlated with Vitonwith Viton sealsManual OverrideReduced strokeSaltwaterwith Neoprenewith Neoprenewith VitonPlatedwith VitonElectroless Nickelwith NeopreneTemperatures apply only to 1096 and 2433 Element* = Also avail. as reduced stroke. Contact factory for other temps.Assemblies. Indicates Non-Standard, MTODIMENSIONS
8B
BO, BC, BE, BM
BF
BH, BO(-)T
Nominal
Model No.
1-1/2BO(-)T1-1/2BHCT2BC(-)F2BM(-)F2BF(-)F2BCSJ2BMSJ2BCSH2BMSH2BO(-)T2BHCT2-1/2BO(-)F2-1/2BM(-)F2-1/2BOSJ2-1/2BMSJ3BO(-)F3BM(-)F3BOSJ3BMSJ3BOSH3BMSH4BO(-)F4BM(-)F5BO(-)F5BM(-)F6BO(-)F6BM(-)F8BO(-)F8BR(-)F
Principal Dimensions
\"S\"
\"W\"
\"Z\"
3-9/16(90)4(102)5-7/8(149)4-7/16(113)5-7/8(149)5-7/8(149)3-9/16(90)4(102)6-1/2(165)6-1/2(165)6-3/4(172)6-3/4(172)6-3/4(172)8-9/16(218)9-1/2(241)10(254)11(280)
Width
in theOther Plane
5-1/2(140)5-3/4(146)6(152)6(152)6(152)6(152)5-1/2(140)5-3/4(146)8-1/4(210)8-1/4(210)8-1/4(210)8-1/4(210)8-1/4(210)12-1/8(308)13-3/4(349)19(483)19-11/16(500)26-3/4(680)
Flange DrillingNo.Dia.
ofHoles
––––4448––––444488888
PipeSize
1-1/2(40)1-1/2(40)2(50)2(50)2(50)2(50)2(50)2(50)2-1/2(65)2-1/2(65)3(80)3(80)3(80)4(100)5(125)6(150)8(200)
ofHoles
––––3/4(19)3/4(19)3/4(19)3/4(19)––––3/4(19)3/4(19)3/4(19)3/4(19)3/4(19)3/4(19)7/8(22)7/8(22)7/8(22)
BoltCircle
––––4-3/4(121)4-3/4(121)4-3/4(121)5(127)––––5-1/2(140)5-1/2(140)6(152)6(152)6-5/8(168)7-1/2(190)8-1/2(216)9-1/2(241)11-3/4(298)
No. ofElementAssemblies
111111112222246918
3-13/169-11/16(97)(246)4-1/1610-11/16(103)(271)4-7/16(113)4-3/4(121)4-7/16(112)4-7/16(112)
8-7/8(225)10-5/8(270)8-7/8(225)8-7/8(225)
3-13/169-11/16(97)(246)4-1/1610-11/16(103)(271)5(127)5(127)5-1/4(133)5-1/4(133)5-1/4(133)7-15/16(201)9-5/8(249)9-5/8(244)16-1/2(420)
10(254)10(254)10-1/2(267)10-1/2(267)10-1/2(267)15-7/8(403)19-1/4(489)19-1/4(489)33(840)
Dimensions in inches. Millimeters in ( ).
Model BFModel BO, BCSERVICE PARTS FOR MODELSBO, BC, BF, BH, BM
RefNo.33456778889999991717
PartNo.
9585L0019585L0021182
11132L050111331183
1183L0021096X(temp)1096P(temp)2433X(temp)761
761L0011094112311171149358
358L001
Description
Seat, Bolted-In (Except BM)Seat (BM only)SleeveCapscrewLockwasher
Element O-ring, Buna N (Standard)Element O-ring Seal, VitonElement Assembly (Standard)Element Assembly, plated
Element Assembly, manual overrideO-ring 1-1/2 – 3B, Buna NO-ring 1-1/2 – 3B, Viton
Gasket 2-1/2 B, 3B, (Old Versions)Gasket 4BGasket 5BGasket 6B
O-ring, Buna N (BM only)O-ring, Viton (BM only)
Model BM This Parts List effective with Valve Serial No. B941.
MAINTENANCE
Properly applied and installed, AMOT Thermostatic Valves require practically no maintenance.
If necessary, temperature element assemblies may be easily replaced. Remove Nuts (12) or Bolts (6) and separatethe Upper (1) and Lower (2) Housing. Remove Element Assembly (8) and Element O-ring Seal (7). Remove HousingO-ring (9) or Gasket and clean any foreign material from sealing surfaces. Lubricate new Element O-ring Seal (7) witha good grade of petroleum grease and re-insert in the groove in Upper Housing (1). Insert Element Assembly (8) throughElement O-ring Seal (7) with a twisting motion. Install Housing O-ring (9) or Gasket around the Element AssemblyFlange and bolt on Lower Housing (2).
AMOT designs and tests all its products to ensure that high quality standards are met. For good product life, carefullyfollow AMOT's installation and maintenance instruction; failure to do so could result in damage to the equipment beingprotected or controlled.
When communicating with AMOT regarding operation of a control, always give the Model No. and Serial No. If orderingservice parts, also include description, part no., and quantity desired. If any parts are ordered by Reference No. only,please include the Form No., Revision No., and date of this brochure.
AMOT Controls Corporation
401 First StreetRichmond, CA 94801Tel: (510) 236-8300Fax: (510) 234-9950
AMOT Controls Ltd.
Western Way
Bury St. Edmunds IP33 3SZ
Suffolk EnglandTel: (01284) 762222Fax: (01284) 760256AMOT Controls Corporation
230 Orchard Road# 09-230 Faber HouseSingapore 238854Tel: (65) 235-8187Fax: (65) 235-8869
© 1997 AMOT Controls CorporationForm 936 A971
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