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ROBERTSHAW Regulating Valves for
Temperature and Pressure
Robertshaw SATR's (self-actuated temperature regulators) have thermal systems
combining the responsiveness of vapor pressure and the positive action of liquid
transmission. Sylphon© seamless metal bellows actuators are offered in three
sizes to provide the correct combination of power, speed of response and
stability for many temperature control applications.
The full range of available valve styles includes sizes 1/4" thru
6", single-seated and double-seated in selected sizes. Direct and
reverse-acting valves are offered for heating or cooling service. A
single-seated fully-balanced direct-acting valve style MA, is standard for
3/4" thru 2" sizes. Three-way valves are offered for blending, mixing,
or diverting service. Robertshaw has now added stainless steel bodies in
1/2" thru 2".
Adjustable temperature ranges are provided from -35ƒ to as high as 480ƒF.
Exact range limits and setpoint adjustment spans are determined by operating
characteristics of individual regulator styles.
Temperature overrun protection is standard. A variety of thermal bulb styles
and armored capillary tube lengths up to 50 feet are offered.
- Model RT-1001-B1
- Two-way-single-seated and double-seated valves, direct and reverse-acting.
Three-way valves for mixing or diverting. Sizes 1/4" to 4" . Wide
throttling band for maximum stability. Approximately 60ƒF spans from -20ƒF
- Model RT-1001-P thru S
- Fixed specification of the RT-1001-B1 SATR sizes 1/2" to 2" for
heating or cooling, built to order and shipped in 5 days or less.
- Model RT-1003/RT-1009 Series
- Same valve selection
as RT-1001-B1. Medium throttling band. More power and sensitivity than
RT-1001-B1. Approximately 60ƒF spans between -25ƒF and 455ƒF. Available
with thermometer integral with thermal system for indication. RT-1009 has
override for manually positioning valve.
- Model RT-1004 Series
- Same valve selection as RT-1001-B1. Extra large actuating bellows for
narrow throttling band, maximum power and sensitivity. Larger thermal bulbs.
Approximately 45ƒF spans between 35ƒF and 425ƒF
- Model RT-921 Series
- Small overall size. Sizes 1/4" through 1" with or without
temperature indication. Excellent for OEM applications.
- Model RT-1006-B1/RT-1007-A1
- Fail-safe design. Should damage to thermal system cause
loss of thermal charge, direct-acting valve (heating service) closes and
reverse-acting valve (cooling service) opens to prevent overheating. Valve
sizes 1/4" to 1" on RT-1006-B1; 1-1/4" to 4" for
RT-1007-A1 with extra large bellows actuator. Approximately 30ƒF spans
between -50ƒF and 325ƒF
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