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Marsh Bellofram
P630R High Flow Gas Relief Valve

P630R High Flow Gas Relief Valve

Product catalog summary

Overview: The BelGAS P630R is a spring-loaded, adjustable relief valve designed for relief pressure settings ranging from 3 PSIG to 250 PSIG (0.21 to 17.3 BAR). It features stainless steel internals and a durable powder-coated exterior, making it suitable for the oil and gas industries. The valve complies with NACE MR0175 standards for corrosive environments.

Specifications:

Body and Bonnet: Cast Iron or Steel (1030 WCB)
Diaphragm: Neoprene or Fluorocarbon
Seat: Nitrile
Orifice: 316 Stainless Steel
Temperature Range: –20º to 150ºF (–29º to 66ºC)
Body Sizes: 1 NPT, 2 NPT
Weight: 1" - 20 lbs (9 kg), 2" - 25 lbs (11.25 kg)

Applications: The valve is used in compressor stations, refineries, and high-pressure plants.

Pressure Ranges:

Low Pressure: 3 – 8 PSIG, 6 – 17 PSIG, 15 – 22 PSIG, 20 – 35 PSIG, 35 – 50 PSIG, 30 – 70 PSIG
High Pressure: 50 – 95 PSIG, 75 – 175 PSIG, 150 – 250 PSIG

Materials of Construction: The valve is constructed with options for cast iron or steel casing, and diaphragms made from neoprene or fluorocarbon.

Relief Capacity: The valve's relief capacity varies with pressure settings, with detailed capacities provided for both low and high-pressure ranges.

Rebuild Kits: Kits are available for different pressure ranges, including neoprene and fluorocarbon diaphragms, O-rings, and seat housing assemblies.

Additional Components: The document lists various parts and their corresponding part numbers, including adjusting screws, hex nuts, spring guides, bonnets, range springs, diaphragms, and more.

Catalog excerpts

• Stainless Steel Internals are Standard • Steel Units comply with NACE MR0175 • Durable Powder Coated Exterior • High Flow Capacities Applications • Compressor Stations • Refineries • High Pressure Plants The BelGAS P630R is a spring loaded, adjustable relief valve designed for relief pressure settings from 3 PSIG to 250 PSIG (0.21 to 173 BAR). The heavy duty construction, made possible by the addition of stainless steel internal components and a powder-coated epoxy exterior finish, makes it ideally suited for the oil and gas industries. All P630 steel units meet NACE MR0175 material requirements for corrosive (sour gas) environments. Maximum Allowable Relief Inlet Body Size

Open the catalog to page 1

Relief Capacity Table - P630R High Pressure Initial Relief Pressure Setting Capacities, SCFH of 0.6 S.G. Natural Gas 10% Pressure 20% Pressure Increase Increase Note: Maximum working pressure above setting is 250 PSIG (17.2 BAR) Spring Range Spring Range Adj. Screw (3) Range Spring (7) Spring Color Code 3 - 8 PSIG 648-462-002 655-659-000 Red Stripe

Open the catalog to page 3

P630R High Flow Gas Relief Valve

P630R High Flow Gas Relief Valve

Catalog excerpts

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