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Model D - Thermostatic Valves |
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Features●FLOW RATES OF 1500-2800 USGPM ● TAMPER-PROOF TEMPERATURE SETTINGS OF 80 F - 230 F ● COMPLETELY SELF-CONTAINED ● POSITIVE 3-WAY VALVE ACTION ● AVAILABLE IN CAST IRON, STEEL, DUCTILE IRON, AND BRONZE ● 8" FLANGED Applications● ENGINE & COMPRESSOR COOLING SYSTEM ● LUBE OIL SYSTEMS ● COGENERATION HEAT RECOVERY LOOPS ● PROCESS CONTROL ● TEMPERATURE MIXING OR DIVERTING OperationAMOT Model D Thermostatic Valves are fully automatic, 3- way fluid temperature controllers for diverting applications. They are used to provide reliable control lubrication oil cooling systems. These valves are suitable for process control and industrial applications where fluids must be diverted depending on their temperatures. They may also be applied to cogeneration systems to control temperatures in the heat recovery loop assuring proper engine cooling and maximizing heat recovery. TAMPER-PROOF - As with other AMOT thermostatic valves, Model D utilizes fully enclosed, factory-set temperature element assemblies which provide tamper-proof operation. To change a valve setting it is necessary to exchange the temperature ele-ments. MANUAL OVERRIDE - A Manual Override is standard on these valves and allows the operator to force all the fluid through the cooler. HIGH RESISTANCE TO SHOCK - AMOT Thermostatic Valves display excellent reliability even under extreme shocks or vibration and some model have been qualified to MIL-S-901 and MIL-V-19772. 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 8 - 10° F below the nominal setting. As the temperature continues to rise, the sliding valve moves to close off Port B and open Port C (connected to the cooler or heat exchanger.) Port B is fully closed 8 - 10°F above the nominal setting. The valve continu-ally modulates the fluid flow to maintain the nominal tempera-ture. For optimum control, the system should be sized so about 1/2 the total fluid flow is passing through the cooler at full load. For long life, AMOT Model D valves should not be exposed to continuous temperatures exceeding 40°F above their nomi-nal temperature setting. For occasional short periods (1/2 hour or less), they can be exposed to temperatures of 60°F above their nominal temperature setting. To operate the Manual Override and force all of the fluid to flow through the cooler, remove Cap (33) and loosen Locknut (34). Turn the shaft counterclockwise to its limit. To return the valve to its automatic mode, turn the shaft clockwise to its limit. Tighten the Locknut and replace the Cap. SpecificationsInternal Trim Materials..............Stainless Steel & Bronze Standard Seal Material..........................................Buna N |
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This and other information from AMOT provide product or system options for further investigation by users having technical expertise. Before you select or use any product or system, it is important that you analyze all aspects of your application and review the information concerning the product in the current product catalog. The user, through its own analysis and testing, is responsible for making the final selection of the system and components and assuring that all performance, safety and warning requirements of the applications are met.
©1997-2005 AMOT
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