Fisherbrand™ R31B Series High Purity Low Flow Gas Regulators

Diaphragm-Sensed Dual-Stage Regulators designed for analytical applications where a consistent outlet pressure and flow are desired. For Noncorrosive High Purity Gases.

Catalog Number	Mfr. No.	Inlet	No. of Ports	Pressure Range (Outlet)	Relief Valve
10-575-220	Fisherbrand™ R31BQKDSKC35011DR	350	6	30 in. Hg Vac-100 psi	Yes
10-575-221	Fisherbrand™ R31BMKDSKC58011D	580	5	30 in. Hg Vac-100 psi	No
10-575-222	Fisherbrand™ R31BMKDSKC54011D	540	5	30 in. Hg Vac-100 psi	No
10-575-223	Fisherbrand™ R31BMKDSKC59011D	590	5	30 in. Hg Vac-100 psi	No

Description

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

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

Specifications

• Bonnet Material: Nickel-plated Brass
• Diaphragm Material: 316L Stainless Steel
• For Use With (Application): Cylinder, research laboratories, gas chromatography, process analyzers, petrochemical industry, power plant
• Gauge Pressure (English): 2 in.
• Inboard Leakage: 2 x 10-8 atm.cc/sec. He
• Knob Material: ABS Plastic
• Max. Outlet Pressure: 250 psi
• Operating Temperature Range (English): -40°F to +165°F
• Outboard Leakage: 2 x 10-8 atm.cc/sec. heat inlet pressure: 1500 psi
• Pressure Range (Outlet): 30 in. Hg Vac-100 psi
• Seat Material: PCTFE
• Weight (Metric): 1.82 kg

• Connection Type: 0.25 in. GENLOK
• Type: Gas Regulator
• Front Panel Thickness: 0.25 in.
• Gauge Pressure (Metric): 5.08 cm
• Includes: Diaphragm valve
• Material: Nickel-plated Brass
• No. of Stages: Dual
• Operating Temperature Range (Metric): -40°C to +74°C
• Pressure Range (Inlet): 3000 psi
• Seal Material: Metal
• Weight (English): 4.03 lb.