Model J - Thermostatic Valves

Features

● LOW COST

● MATERIAL: BRONZE & ALUMINUM

● POSITIVE 2-WAY & 3-WAY VALVE ACTION

● ACCOMMODATES 150 psi SUPPLY PRESSURE DIFFERENTIAL

● COMPLETELY SELF-CONTAINED

● COMPACT

● OPTIONAL FEATURES:
~ Pressure Relieving (JR)
~ External Sensor (JE)

Applications

● WATER SAVER

● TEMPERATURE MIXING OR DIVERTING

● MACHINE COOLING

● COGENERATION

● HEAT RECOVERY SYSTEMS

● LUBE OIL SYSTEMS

Operation

Model J Thermostatic Valves are available in various ver-sions for a wide range of temperature control requirements. They utilize the proven expanding wax principle to actuate the control valves. The JO, JR and JE valves are suitable for oil temperature control in equipment such as engines, transmissions and compressors. The JW is a special 2-way unit used for temperature control of cooling water supplies in ³Water Saver² applications.

All Model J valves use a fully enclosed temperature ele-ment that is factory set and provides tamperproof opera-tion. It is field replaceable and is available with temperature settings from 65 F to 235 F.

The standard seal material for all models is Buna N and is compatible with petroleum based oils and water. Special versions are available for other applications:

●Nickel plated element & Viton seals
~ synthetic lubricants

● Electroless Nickel plated element & Neoprene seals
~ lube system of ammonia refrigeration compressors

● Electoless Nickel plated element & Buna N seals
~ lube systems with Hydrogen Sulfide in oil

● Neoprene seals
~ lube oil systems of freon refrigeration compressors

● Leak holes
~ 2-way water saver applications
~ start up under cold ambient conditions

The valve is supplied with the temperature element factory set to the nominal temperature setting. Temperature is sensed at Port A which remains open to Port B (bypass) until the fluid temperature reaches a point 5-10 F (3-6 C) 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 10 F (6 C) above the nominal setting. The valve continually modulates the fluid flow to maintain the nominal temperature. For optimum control, the system should be sized so that about 2/3 the total fluid flow is passing through the cooler at full load.

Due to the metal-to-metal seal on the sliding valve, some leakage (about 5%) is to be expected between ports B & C. This precludes the need for a leak hole in the valve, but it is available if required.

For long life, AMOT Model J Valves should not be exposed to continuous temperatures exceeding 6f F (36 C) above their nominal temperature setting. For occasional short periods such as 1/2 hour, they can be exposed to temperatures of 90 F (50 C) above their nominal temperature setting, but should never exceed 250 F (121 C).

Specifications

Housing and Plug JO, JR, JE.......................Aluminum JW......................................................................Bronze Internal Trim Materials..............Stainless Steel & Bronze Standard Seal Material.........................................Buna N Valve Pressure Rating.......................350 psi (2410 kPa) Net Weight................................................1.3 lbs (0.6 kg)