Marsh Bellofram BelGAS Division P912 Pressure Regulator

Product catalog summary

Overview: The P912 Pressure Regulator is a versatile pneumatic device designed for accurate pressure control with a compact design and removable vent screen. It features an internal relief mechanism for quick response to excess pressure.

Applications: Suitable for various gaseous fluids such as air, natural gas, and propane, and can function as a low-pressure (LP) regulator.

Specifications:

Inlet/Outlet: 1/4" NPT inlet, 1/4" or 3/8" NPT outlet
Temperature Range: -20 to 170 ºF
Outlet Pressure Ranges: Multiple ranges from 3-7 inches W.C. to 2.7-5 psig
Max Inlet Pressure: 250 PSIG
Weight: Approximately 1.3 lbs

Materials of Construction:

Body/Bonnet: Zinc
Diaphragm: Nitrile
Gaskets: Non-asbestos, CGR 2750
Vent Screen: Monel
Spring: Zinc-plated steel

Output Pressure Settings: The regulator offers various output pressure settings with specific spring part numbers and capacities for different inlet pressures.

Capacity: Detailed capacity information is provided for different inlet pressures and output pressure settings, measured in SCFH (standard cubic feet per hour) of natural gas with a specific gravity of 0.6.

Part Matrix: The P912 part matrix includes options for outlet port size and output pressure ranges, along with vent connection details.

Parts List: A comprehensive list of parts with descriptions and part numbers, including body, arm assembly, rod, screws, springs, bonnet, and diaphragm.

Rebuild Kit: The regulator rebuild kit includes essential components such as the arm assembly, gasket, screen, and diaphragm.

Catalog excerpts

Marsh Bellofram BelGAS Division P912 Pressure Regulator-2

P912 PART MATRIX P912 1 0 0 0 0 0 OUTLET PORT SIZE 14" 02 38" 03 OUTPUT PRESSURE 3"-7" W.C. 020 5"-10" W.C. 040 9.25" -13" W.C. 060 10" W.C.-1.05 psig 080 0.5-2.7 psig 100 2.7-5 psig 120 VENT CONNECTION: 1/8" NPT WITH REMOVABLE SCREEN 79.3 3.12 3.3 0.13 68.8 2.71 12.7 0.5 50.3 1.98 92.0 3.62 12.7 0.5 ITEM DESCRIPTION PART NUMBER 1 Body, 14"X 38" Port Zinc Body, 14"X 14" Port, Zinc 664-310-000 664-311-000 2 Arm assembly, nitrile/zinc 827-009-000 3 Rod, Stainless Steel 646-540-000 4 Machine Screw 516", plated steel (qty. 2) 648-000-417 5 Machine Screw 38", plated steel (qty. 6) 648-000-418 6 Backup...

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