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Marsh Bellofram’s Type 51FRWT High-Performance Low-Cost Precision Air Regulator provides superior performance in a small and compact, low-cost package, offering output pressure ranges to 120 psig 8.3 BAR. The 51FRWT is specifically designed for a wide temperature range between -40°F and 185°F.
The maximum supply pressure is 250 psi (17.3 BAR) and regulator is constructed of die cast aluminum for the body and dripwell; glass-reinforced thermoplastic polyester for the bonnet; acetal resin for the internals; BUNA-N for the diaphragm, gaskets and O-ring, fluorocarbon for the pintle seat, and aluminum for the drain valve (plated steel handle).
The 51FRWT offers first-rate regulation for a vast array of applications, including pneumatic instruments, controllers, chucks, and actuators. They can be through-panel mounted with the supplied mounting nut, bracket-mounted with the optional bracket or, due to their light weight, mounted by their ports. The Corrosive Tec is supplied with a tapped bonnet vent, to allow for the capture of exhaust air.
| Type 51R | Type 51FR Filter Type 51AFR Auto Filter | Type 51FRCT Corrosive Tec | Type 51FRWT | |
| Maximum Supply Pressure | 250 PSIG (17.3 BAR) | 250 PSIG (17.3 BAR) | 250 PSIG (17.3 BAR) | 250 PSIG (17.3 BAR) |
Output Pressure Range | 0-30 PSIG (0-2.1 BAR) 0-60 PSIG (0-4.1 BAR) 0-100 PSIG (0-6.9 BAR) | 0-30 PSIG (0-2.1 BAR) 0-60 PSIG (0-4.1 BAR) 0-100 PSIG (0-6.9 BAR) | 0-30 PSIG (0-2.1 BAR) 0-60 PSIG (0-4.1 BAR) 0-120 PSIG (0-8.3 BAR) | 0-30 PSIG (0-2.1 BAR) 0-60 PSIG (0-4.1 BAR) 0-120 PSIG (0-8.3 BAR) |
| Supply Pressure Sensitivity @ 25 psig / 1.7 BAR change in supply | 0.20 PSIG (0.01 BAR) output change | 0.45 PSIG (0.03 BAR) output change | 0.45 PSIG (0.03 BAR) output change | 0.45 PSIG (0.03 BAR) output change |
| Sensitivity | 1" (2.5 cm) of water | 1" (2.5 cm) of water | 1" (2.5 cm) of water | 1" (2.5 cm) of water |
| Repeatability | 0.1 PSIG (0.01 BAR) | 0.1 PSIG (0.01 BAR) | 0.1 PSIG (0.01 BAR) | 0.1 PSIG (0.01 BAR) |
| Flow @ 100 psig (6.9 BAR) Supply 20 psig (1.4 BAR) outlet | 15 SCFM (425 LPM) | 20 SCFM (566 LPM) | 20 SCFM (566 LPM) | 20 SCFM (566 LPM) |
| Exhaust Capacity @ 5 psig (0.34 BAR) above setpoint | 0.1 SCFM (2.8 LPM) | 0.1 SCFM (2.8 LPM) | 0.1 SCFM (2.8 LPM) | 0.1 SCFM (2.8 LPM) |
| Temperature Range | -0 to 125 °F (-18 to 52 °C) | -0 to 125 °F (-18 to 52 °C) | 0 to 180 °F (-18 to 82 °C) | -40 to 185 °F (-40 to 85 °C) |
| Air Consumption | 6 SCFH (2.84 LPM) Maximum | 6 SCFH (2.84 LPM) Maximum | 6 SCFH (2.84 LPM) Maximum | 6 SCFH (2.84 LPM) Maximum |
| Port Size | 1/4 NPT | 1/4 NPT | 1/4 NPT | 1/4 NPT |
| Materials of Construction | Aluminum, Plated Steel, Brass, Acetal Resin, Buna-N /Polyester, Music Wire | Aluminum, Plated Steel, Acetal Resin, Buna-N / Polyester, Music Wire, Fluorocarbon | Aluminum, Stainless Steel, Inconel, Buna-N / polyester, Fluorocarbon, acetal, polyphenylene sulfide | Aluminum, Plated Steel, Acetal Resin, Buna-N /Polyester, Music Wire |
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