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Fisherbrand™ R31B Series High Purity Low Flow Gas Regulators

Diaphragm-Sensed Dual-Stage High Purity regulators designed for analytical applications where a consistent outlet pressure and flow are desired

Manufacturer: genstar technologies co  R31BMK-DSK-C580-11-D

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Catalog No. 10-575-221

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Description & Specifications


Bonnet Material Nickel-plated Brass
Connection Type 0.25 in. GENLOK
No. of Stages Dual
Diaphragm Material 316L Stainless Steel
Product Type Gas regulator
For Use With (Application) Cylinder, research laboratories, gas chromatography, process analyzers, petrochemical industry, power plant
Front Panel Thickness 0.25 in.
Gauge Pressure (English) 2 in.
Gauge Pressure (Metric) 5.08cm
Inboard Leakage 2 x 10-8 He
Inlet 540
Knob Material ABS Plastic
Includes Diaphragm valve
Max. Outlet Pressure 250psi
Material Nickel-plated Brass
No. of Ports 5
Operating Temperature Range (English) -40 to 165°F
Operating Temperature Range (Metric) -40 to 74°C
Outboard Leakage 2 x 10-8 heat inlet pressure: 1500psi
Pressure Range (Inlet) 3000psi
Pressure Range (Outlet) 30 in. Hg Vac-100psi
Relief Valve No
Seat Material PCTFE
Weight (English) 4.03 lb.
Seal Material Metal
Weight (Metric) 1.82kg
Ports M

  • Dual-Stage Configuration
  • Metal-to-Metal Seal
  • Body Port Size: Diaphragm Valve with 1/4 in. NPT (F)
  • 2 in. Pressure Gauge

Cylinders, Research Laboratories, Gas Chromatography, Process Analyzers, Petrochemical Industry, Power Plant