Thermostatic Control Valves

Transcription

1 Thermostatic ontrol Valves Model Typical applications Lubricating oil temperature control Jacket temperature (HT) Secondary water low temperature (LT) Heat recovery Water saving applications oiler inlet temperature control o-generation, cooling towers Temperature mixing or diverting Engine and compressor cooling system Valve Range Key benefits No external power source required - simple, low cost installation No user setting needed - fit and forget solution Small number of parts - simple maintenance and low cost of ownership Robust design capable of high vibration and shock applications Easy installation, operates in any mounting position utomatic self-sensing control with positive proportional valve action Key features Flow rates of.4-2m /hr (6-54 US gpm) ombinations available: Housings in cast iron, aluminum, bronze, carbon steel, stainless steel DN5 - D40 ( /2 to /2 ) pipe sizes Threaded and flanged connections Tamper-proof temperature settings from 8 to (65 F to 25 F) Pressure ratings up to 72 bar (050 psi) ccreditations available PED Suitable for Group & 2 liquids (Ensure materials are compatible) TEX 2 G X omplies with all relevant EU directives Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4

2 Thermostatic ontrol Valves - Model ontents Overview... pplications... 4 Valve haracteristics... 4 Pressure drop... 4 Flow coefficient... 5 Temperature & element characteristics... 7 type and seal material... 7 How to order... 6 Service kits... 8 Specification...0 Weights... 0 Dimensions... Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 2

3 Thermostatic ontrol Valves - Model Overview MOT model thermostatic valves are available in a wide selection of sizes and settings to fill a multitude of fluid temperature control requirements. These valves may be mounted in any position and use the proven expanding wax principle to actuate the -way temperature element assemblies. The model valves may be used for diverting or mixing service. They make vailable housing materials ast iron luminum ronze Steel Stainless steel very economical temperature limiting valves to prevent scalding in home, motel or hotel hot water supply systems. Radiant heating systems can use these valves in limiting water temperature to prevent surface cracking and over-heating of plastic piping. Other applications include electronic and battery cooling circuits, pump temperature relief valves etc. Seal materials una-n/nitrile Viton Neoprene materials ronze, brass and stainless steel Nickel plated/stainless steel Stainless steel Leak holes In some applications, it is necessary to have leak holes drilled in the element to ensure a small flow between ports and. Leak holes are available in sizes ranging from 0.8mm to 6.mm ( /2 to /4 ). Please contact MOT to determine the hole size required for specific applications. Temperature settings wide selection of element materials, seals and temperatures are available. Follow the equipment manufacturers guidelines for heating/cooling systems. Temperature settings are available from 8 to (65 F to 25 F). Refer to the Temperature & haracteristics table on page 6 for specific temperature settings. In general the temperature quoted is the nominal operating temperature in diverting mode on water systems. For long life, MOT valves should not be operated continuously at temperatures in excess of 4 (25 F) of their maximum continuous rating. If this condition is anticipated then consult MOT for suitable alternatives. For mixing and oil circuits the temperature may be one to two degrees higher due to flow, viscosity and other system parameters. s and seals are available in a variety of materials. These materials are suitable for most applications. Please contact MOT for material compatibility information. Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page

4 pplications Thermostatic ontrol Valves - Model Diverting pplications When valves are used for diverting service, the inlet is Port (temperature sensing port), with Port being connected to the cooler, and Port connected to the cooler by-pass line. Mixing pplications When valves are used for mixing service, Port is the cold fluid inlet port from the cooler, Port is the hot by-pass fluid inlet, and Port the common outlet. Port is the temperature sensing port and will mix the hot and cold fluids in the correct proportion so as to produce the desired outlet temperature leaving Port. 2-way Water Saving pplications Valve as shown maintains minimum flow through cooler to conserve water. Requires internal leak hole to permit small flow for sensing. Heat load MOT thermostat Heat removal ooler Heat load MOT thermostat Heat removal ooler Heat load Pump Port blocked Pump Valve characteristics Pump Pressurre Drop (ar) Pressure drop (Metric units) MOT thermostatic valves are designed to produce minimal pressure drop. The normal recommendation in sizing the valves is to select a pressure drop between 0.4 to 0.5 ar (2 and 7 PSI). SE 40 oil at 0 F SE 20 oil at 0 F Water - Size s s s s s s s s s /2 L /4 L L /2 L /2 M /4 M M /4 M /2 M/F /4 M Flowrate m³/hr Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 4

5 Thermostatic ontrol Valves - Model Valve characteristics Pressure drop (English units) Pressure drop PSI MOT thermostatic valves are designed to produce minimal pressure drop. The normal recommendation in sizing the valves is to select a pressure drop between 2 and 7 PSI (0.4 to 0.5 bar). SE 40 oil at 0 F SE 20 oil at 0 F Water Size s s s s s s s /2 L /4 L L /2 L /2 M /4 M M /4 M /2 M/F /4 M Flowrate US gpm Flow coefficient Flow coefficients (calculated) Size Kv v /2 L /4 L /2 L /2 M /4 M M /4 M 9.5 /2 M/F 9.5 /4 M Kv is the flow coefficient in metric units. It is defined as the flow rate in cubic meters per hour (m³/h) of water at a temperature of 6 elsius with a pressure drop across the valve of bar. The basic formula to find a valve s Kv is shown below: DP = Q Kv 2 SG Q = Kv DP SG Q = Flow in m /hr DP = Pressure drop (ar) SG = Specific gravity of fluid (Water =.0) Kv = Valve flow coefficient v is the flow coefficient in English units. It is defined as the flow rate in US Gallons per minute (gpm) of water at a temperature of 60 Fahrenheit with a pressure drop across the valve of psi. The basic formula to find a valve s v is shown below: DP = Q v 2 SG Q = v DP SG Q = Flow in US gallons DP = Pressure drop (Psi) SG = Specific gravity of fluid (Water =.0) v = Valve flow coefficient Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 5

6 Thermostatic ontrol Valves - Model Valve characteristics continued vailable versions ast iron ronze luminum Steel Stainless Steel Threaded Threaded Threaded Threaded Threaded /2 M/L /2 M/L /4 M/L /4 M/L /4 M/L /4 M/L /4 M/L M/L M/L M/L M/L M/L Flanged Flanged Flanged /4 M /2M/L None /2 F /2 F /4 M Flanged Welded Welded /2 M/L None /4 & M /4 & M Flanged /2F How to Order Valve Use the tables below to select the unique specification of your G valve. Example: D E F - G H - J Model /4 M U F - Valve Size Nominal ore Size /2 /2 inch (DN5) /4 /4 inch (DN20) inch (DN25) /4 /4 inch (DN2) /2 /2 inch (DN40) Valve Model onnections No. of s M Threaded valve M High flow valve ( /4 valve only) 2 L Low flow valve F Flanged connection ( /2 valve only) S R D F H J K M ody Material ronze (M and L) ast iron (M, M, F and L) luminum (M, /4 and only) Steel (/4 and M, /2 F only Stainless steel (/4 and M, /2 F only) Port onnection Flanged EN 092, PN0, PN6 Flanged NSI 25 lb Flanged NSI 00 lb (steel and stainless steel only Flanged 50 lb (steel and stainless steel only) Flanged NSI 600 lb ( steel and stainless steel only) Socket weld (/4 & steel & stainless steel M valves T Threaded NPT to USS 2. U Threaded SP (PL) to S 2 V W R Threaded SP (TR) Japanese (JIS) Threaded to SE J5 4H (straight thread, o-ring seal) Threaded SP (PL), boss faced, DIN 852 Form X (ronze, cast iron and ductile iron only) Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 6

7 Thermostatic ontrol Valves - Model How to Order Valve - continued E ontrol Temperature ontrol temp. F rack open Rated range Full open F F Max temp cont. F G Leakhole Sizes inches (mm) /2 (0.8) /6 (.6) D /2 (2.4) F /8 (.2) G /4 (6.) H /6 (5) 0 None H* Leakhole Quantity (Number of elements w/leak hole, max. one per element 0 None (Specified on M only) (Specified on M only) 2 2 (Specified on M only) J - *Note: Leakhole quantity (this field is not used for M, L, F valves. M only). ustomer Special ode ssigned Standard products -*** ustomer special code assigned F Type and Seal Material Valve model type construction Seals 0 06 M/M/F L 25X 0765X Standard element M/M/F 25X Standard L 0765X element unan/ Nitrile Viton M/M/F 62U Standard L 0765U M/M/F L M/M/F L M/M/F L 25P 0765P 25P 0765P K 86 M/M/F 44844X Nickel plated Nickel plated Nickel plated Salt water - SS Neoprene unan/ Nitrile Viton Neoprene Viton Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 7

8 Service kits Thermostatic ontrol Valves - Model Service Kit for Models M/L luminum, steel or stainless steel housing Replacement parts include: 5 4 O-ring seal Housing O-ring seal O-ring seal Service Kit for Models M/L ast iron or bronze housing Replacement parts include: 5 2 O-ring seal Housing O-ring seal When properly applied and installed, MOT thermostatic valves should operate for years with minimal maintenance. n inspection at two or three year intervals is adequate to detect and make provision for normal wear. The frequency of element replacement will depend on the operating conditions and the type of fluid being controlled. ecause of the diaphragm and plug construction of the wax actuated element, calibration will be maintained over thousands of cycles. Whenever elements are replaced, the O-ring seals should also be replaced. For convenience, elements and O-ring seals may be ordered together in the service kits listed here. Service Kit for Models M ast iron housing Requires two sets of parts Replacement parts include: x s 2 x O-ring seals 2 x Housing O-ring seals Service Kit for Models F ast iron, steel or stainless steel housing 5 Replacement parts include: O-ring seal Housing O-ring seal Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 8

9 Thermostatic ontrol Valves - Model Service kits continued Service kits are available with elements and seals required to service the valve. Order kits by part number and nominal temperature setting. If these are not known, refer to the model number structure that is printed on the valve nameplate and on page 7. The element part number and temperature are also stamped onto the element flange. Service kit model number structure Sample codes /2 M KIT /4 M KIT Spec ode Table G - Leak hole quantity Table F - Leak hole size Table E - type and seal material Table D - temperature Table - Housing material Table - Valve type Table - Valve size Table Table Table Table D Table E Table F Table G (for M only) Valve Size Valve Type Housing Material ode Temp. ode ode no. Type Seal Material Leak Hole ode Leak Hole Size /2 M - aluminum 000* 0 Standard una N 0 None 0 /4 M - bronze Standard Viton /2 L - cast iron Standard Neoprene /6 2 /4 F S - steel Plated una N D /2 /2 R - stainless steel Plated Viton F /8 Note *Kit provides seals only. No element is included Plated Neoprene G / Salt water Viton H / No. of elements with leak hole Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 9

10 Specification Thermostatic ontrol Valves - Model Flow rate.4-2m /hr (6-54 gpm) ody materials & ast iron 0 bar (50 psi) pressure ratings ronze ` 0 bar (50 psi) luminum 24 bar (50 psi) S / SS Threaded 48 bar (700 psi) S / SS 50# Flanged 6 bar (20 psi) S / SS 00# Flanged 45 bar (655 psi) S / SS 600# Flanged 72 bar (050 psi) Seal materials Mounting position Ports Nitrile/una N, Viton, Neoprene ny orientation elow nominal temperature Ports and connected bove nominal temperature Ports and connected Port connections Threaded 5, 20, 25, 2 & 40 mm (/2, /4,, /4 & /2 ) Flanged 40 mm ( /2 ) Valve sizes 5, 20, 25, 2 & 40 mm (/2, /4,, /4 (nominal bore) & /2 ) Recommended pressure drop 0.4 to 0.5 bar (2 to 7 psi) ontrol temperatures 8 - (65 F to 25 F) Weight Weights in kg (lbs) Material /2M, L /4M, L, M, L /4M, L M, L /4MS, L MS, L /4 M /2 M, /2 L /4 M /2 FF /2 FSJ /2 FRJ /2 FSH /2 FRH ronze 2 (4) (6.6) - ast iron 2 (4) (6.6) 4. (9.5) (24) Stainless steel /2 FSK /2 FSRK.6 (8) 9 (20).5 (0) 6. (6) Steel.6 (8) 9 (20).5 (0) 6. (6) luminum.2 () Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page 0

11 Valve Dimensions Thermostatic ontrol Valves - Model Model M Model /4 M U U H H W F J = Inlet port = ypass port = ooler port J F PORT THREDS PLES (SEE TLE) W SQURE Dimension mm (inches) /2M, M, L, L /4M, M, L, L M, M, L, L Valve Size and Type /4M, L M, L Threaded /4MR, MS, LR, LS MR, MS, LR, LS /4 M /2 M, L /4 M H 50.8 (2) 54 (2.) 54 (2.) 7 (2.9) (4.4) J 44.5 (.78) 54 (2.) 54 (2.) 8. (.5) 9.7 (.6) F 52.4 (6.0) 60. (6.4) 60. (6.4) 58.8 (6.) 55.6 (6.2) U 90.5 (.62) 95. (.8) 95. (.8) 5.9 (4.6) 90.5 (7.6) W 79.4 (.8) 82.6 (.) 85.7 (.4) 85.7 (.4) 98.4 (.9) Model /2 F W D 40mm ( /2 ) Flange Sizing mm (inches) Flange D K NSI 25 lb 6 ( /2) 98.4 (4) NSI 50 lb 6 ( /2) 98.4 (4) NSI 00 lb 22 ( /4) 4. (4 /2) NSI 600 lb 22.2 ( 7 /8) 4. (4 /2) H Valve Size and Type (Flanged) J 4 HOLES DI D on K PD F Dimension mm (inches) /2 FF /2 FSJ /2 FRJ /2 FSH /2 FRH /2 FSK /2 FSRK H - 7 (2.9) 7 (2.9) 7 (2.9) J 50 (6) 27 (5) 56 (6.2) 56 (6.2) F 00.8 (4) 00.8 (4) 20.6 (4.8) 0 (5.) W 78 (7) 78 (7) 20.2 (8) 22 (8.75) Datasheet Thermostatic_ontrol_Valve_SEP6_Rev4 page

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