Pressure Sensors
For Accurate Measurement of Slurry and Corrosive Fluids
Red Valve's Pressure Sensors are the industry standard for protecting instrumentation and assuring accurate, dependable pressure measurement of slurry and corrosive fluids. The line pressure is sensed 360° through the flexible rubber sleeve. The captive fluid is displaced through the pressure sensor body to the instrument's Bourdon tube. All instruments are isolated and protected from the process, assuring positive and accurate readings.
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All Red Valve Pressure Sensors and gauges are tested and calibrated through the mid-range to assure the highest level of accuracy. Pressure gauges, transmitters, transducers, recorders, differential pressure and vacuum switches can be factory-installed on any sensor model.
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Red Valve's SPS Series 40 Pressure Sensors are the industry standard for protecting instrumentation. They assure accurate, dependable pressure measurement of slurry and corrosive fluids.
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The line pressure is sensed 360° through the flexible rubber sleeve. The captive fluid is displaced through the pressure sensor body to the instrument’s Bourdon Tube. All instruments are isolated and protected from the process, assuring positive and accurate readings.
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The full-faced, thru-bolted Series 40 installs directly inline. Costly installation and maintenance of pipe stands and saddle welds, which are required when installing antiquated diaphragm seals, are eliminated.
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The thru-bolted Series 40 can be mounted in any flow direction, submerged in a tank or mounted with a blind flange as a dead end to monitor tank levels.
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The Series 40 is bottom mounted, with a 2½” diameter steel case. Accuracy of this gauge is ±1% of the gauge reading. A 0-100 psi gauge is furnished as standard, unless otherwise specified. 0-200 psi gauges are optional at no additional cost. All Red Valve Pressure Sensors and gauges are tested and calibrated through the mid-range to assure the highest level of accuracy. Pressure gauges, transmitters, transducers, recorders, differential pressure or vacuum switches are factory filled and mounted to the Series 40.
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Red Valve's Series 40W Pressure Sensors are the industry standards for protecting instrumentation and assuring accurate, dependable pressure measurement of slurry and corrosive fluids.
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The line pressure is sensed 360° through the flexible rubber sleeve. The captive fluid is displaced through the pressure sensor body to the instrument’s Bourdon Tube. All instruments are isolated and protected from the process, assuring positive and accurate readings.
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The full-faced, thru-bolted Series 40W installs directly inline. Costly installation and maintenance of pipe stands and saddle welds, which are required when installing antiquated diaphragm seals, are eliminated.
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The thru-bolted Series 40W can be mounted in any flow direction, submerged in a tank or mounted with a blind flange as a dead end to monitor tank levels.
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The Red Valve standard gauge is bottom mounted, with a 2½” diameter steel case. Accuracy of this gauge is ±1% of the gauge reading. A 0-100 psi gauge is furnished as standard, unless otherwise specified. 0-200 psi gauges are optional at no additional cost. All Red Valve Pressure Sensors and gauges are tested and calibrated through the mid-range to assure the highest level of accuracy. Pressure gauges, transmitters, transducers, recorders, differential pressure or vacuum switches are factory filled and mounted to the Series 40W.
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Red Valve’s SPS Series 42 Pressure Sensor and Series 742 Diaphragm Seal isolate and provide accurate instrument reading of gauges, transmitters and pressure switches, making them ideal for use in chemical or slurry service.
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The Series 42 and Series 742 can be mounted in any flow direction and have threaded ends manufactured to standard NPT pipe tap dimensions for smaller pipelines. The principle of operation is simple - as process pressure is sensed by the 360° elastomer sleeve, the captive fluid transfers the process pressure to the instrument, providing a consistent and accurate reading.
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The Series 742 offers a significant advantage over traditional diaphragm seals. When installed perpendicular to the pipeline, the Series 742 can be isolated so that in the event of plugging, the elastomer slurry ring area, which isolates the instrument, can be flushed or rodded clean.​
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Series 42 Pressure Sensors and Series 742 Diaphragm Seals are available in sizes ½” through 2”. The Series 42 features a tip-mounted gauge, while the Series 742 is supplied with a standard back mounted gauge. A complete Series 742 Diaphragm Seal, including optional isolation ball valve, is available for immediate delivery.
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Red Valve’s SPS Series 48 Pressure Sensor protects and isolates instrumentation, eliminating plugging and fouling that can occur in slurry and hard-to-gauge liquid applications. The economical Series 48 is designed to fit inside the bolt pattern of the pipe flanges, allowing for ease of installation and reducing the size of the unit. Series 48 Sensors are designed to fit Class 150 and 300 flange drilling, DIN, BS NP10, or any customer specified piping systems.
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Reliable, accurate instrument readings are often difficult or even impossible to obtain in pipelines carrying slurry, solids or chemical process. Standard diaphragm seals are vulnerable to plugging by debris or deposits and only give a pressure reading from one small area. With the Series 48 Pressure Sensor these problems are eliminated
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The principle of operation is simple - line pressure is sensed through a flexible rubber sleeve which is a full 360° circumference of the pipe I.D. The captive fluid is displaced through the Series 48 Pressure Sensor body to the instrument’s Bourdon Tube. All instrumentation is protected from the process, which assures accurate, repeatable pressure readings.
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The SPS Series 48W Pressure Sensor isolates and protects instrumentation. The full-port design eliminates clogging, ensuring accurate pressure measurement under the most difficult conditions. The elastomer sleeve senses pressure 360° around the inner circumference of the unit, overcoming problems like plugging and fouling of traditional diaphragm seals.
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Combinations of elastomers and sensing fluids provide an operating range of -208° F to +400° F. Standard units are rated at 300 psi operating pressure and 450 psi surge pressure. All areas exposed to the process media are elastomer covered. Depending on the type of media being handled, elastomers can be specified to offer the best combination of chemical and abrasion resistance characteristics. The elastomer sleeve extends to the full face of the flange, eliminating the need for additional gaskets.
