P300 Pressure Regulator

Product catalog summary

Overview: The document outlines the specifications and configurations for the P300 series pressure regulators, which are manual, direct-acting, self-operating, spring-loaded, and adjustable. These regulators are designed to handle sudden downstream load changes and operate over wide pressure ranges. The P302 model includes an internal relief valve for overpressure protection.

Specifications:

Maximum Emergency Outlet Pressure: 15 PSIG
Temperature Range: -20˚F to 180˚F (-29˚C to 82˚C)
Port Sizes: 1.25 NPT, 1.5 NPT, 1.5 NPT x 2 NPT, 2 NPT
Orifice Sizes: 3/16", 1/4", 3/8", 1/2", 3/4"
Materials: Aluminum, Ductile Cast Iron, WCB Steel, Nitrile

Applications: Suitable for compressors, gas engines, and service regulators.

Pressure Ranges and Spring Colors:

P301 & P302: 3 - 6 WC (Red), 5 - 8.5 WC (Silver), 6 - 14 WC (Blue), 12 - 28 WC (Green)
P301H & P302H: 1 - 2 PSIG (Black), 1.5 - 3 PSIG (Olive), 2.5 - 5.5 PSIG (Yellow), 4.5 - 8 PSIG (Brown, P301H Only)

Flow Capacities: The document provides detailed flow capacities for various configurations and inlet pressures, specifying capacities for different orifice sizes and body sizes.

Interchangeability: The P300 series can use the P200 series body with an adaptor ring, facilitating easy system downsizing.

Additional Features: Includes tables and charts illustrating pressure ranges, flow capacities, and configurations for various models and setups.

Upgrade Instructions:
To upgrade with a head-only P200, follow these steps:

Remove the bolts and the P300 head from the body, then remove it from the line.
Attach the new head to the installed body using the supplied bolts.
If a 1.5” x 2” or 2” x 2” BelGAS P300 is installed, replace the P300 head with a BelGAS P200 head to up-size the system.

Note: A P300 head can be mounted to a P200 2” body with the appropriate adaptor and bolts. A P200 head cannot be mounted to any existing P300 body unless it is a BelGAS 2” P200/P300 body.

Parts and Specifications:
Includes detailed parts lists and specifications for the P300 series, such as:

Bonnet Cap, Cap Gasket, Adjustment Screws, Range Springs, Vent Assembly Parts, Diaphragms, and other components.
Each part is listed with its description, quantity, and part number.

These parts are included in the Repair Kit 971-300-000 and applicable for different body sizes like 1-1/4, 1-1/2, and 2-inch NPT bodies.

Key Components:

Bonnet Cap - Aluminum
Cap Gasket - Neoprene
Adjustment Screws for different versions
Range Springs with various pressure ratings
Vent Assembly Parts including Retaining Ring, Vent Screen, and Flapper components
Diaphragms and associated hardware

Installation and Compatibility:
Guidance is provided on the compatibility and installation of different heads and bodies, emphasizing the need for appropriate adaptors and bolts for successful assembly.

Catalog excerpts

• Minimize Sudden Downstream Load Change • Wide Pressure Ranges • P302 has internal relief valve for overpressure protection The P300 series pressure regulator is a manual, direct acting, self-operating, spring loaded, adjustable regulator. The P300 series is used in applications where pressure reduction is required. The regulator will reduce the risk of "shock" from abrupt changes of downstream conditions. This can help prevent safety equipment from shutting an operation down. Applications • Compressors • Gas Engines • Service Regulators Materials of Construction P300 Series Maximum Inlet Pressure P300 Series Range Springs

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P300 Regulator Rebuild Kits Kit Includes Part Number Diaphragm, Disk Holder, Cap Gasket, O-Ring 971-300-000 * Port orientation is based on the body's "Out" port location in relation to the top view of the regulator. DOWN P300 UP Vent Positions 1 Version Non-Relieving Relieving Configuration Normal High Port Size 1.25 NPT 1.5 NPT 1.5 x 2 NPT 2 NPT Spring Range WC mBAR 3 - 6" WC 9 - 15 5 - 8.5" WC 12 - 21 6 - 14" WC 15 - 35 12 - 28" WC 30 - 70 H Configuration PSIG BAR 1 - 2 PSIG .07 - .14 1.5 - 3 PSIG .10 - .21 2 - 5.5 PSIG .17 - .38 4.5 - 8 PSIG .31 - .55 Special Construction None 150 RF (2" Steel...

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P300 Head Only Body Size

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P302 Normal (0) Relief Capacities Outlet Pressure, Outlet Pressure, PSIG PSIG Inlet Pressure, PSIG Inlet Pressure, PSIG Outlet Pressure, Outlet Pressure, PSIG PSIG Inlet Pressure, PSIG 0.5 1" PSIG Set Outlet Pressure 0 Inlet Pressure, PSIG 1" PSIG Set Outlet Pressure

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P301 & 302 Flow Capacities in SCFH (Nm3/h) of 0.6 Specific Gravity Natural Gas Outlet Pressure, Spring Part Number, and Accuracy Inlet Pressure Orifice Size, Inches (mm) 1 inch WC (2.5 mBAR) droop 1 inch WC (2 mBAR) droop 2 inches WC (5 mBAR) boost 1. Limited due to boost - Shaded areas show where indicated droop would be exceeded regardless of capacity. - Shaded areas show where maximum operating inlet pressure for a given port diameter is exceeded. 128

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P301 & 302 Flow Capacities in SCFH (Nm3/h) of 0.6 Specific Gravity Natural Gas Outlet Pressure, Spring Part Number, and Accuracy 1. Limited due to boost - Shaded areas show where indicated droop would be exceeded regardless of capacity. - Shaded areas show where maximum operating inlet pressure for a given port diameter is exceeded.

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Interchangeability between the BelGAS P200 series and the P300 series The unique feature about the BelGAS P300 regulator is that it utilizes the BelGAS P200 series 1.5”x 2” and the 2” x 2” body using a simple adaptor ring. The simplicity of down-sizing a system when a BelGAS P200 unit is installed is as easy as removing the 2 body-to-head bolts and installing a BelGAS P300 head with the appropriate adaptor and bolts. Or, if a 1.5” x 2” or 2” x 2” BelGAS P300 is installed, the BelGAS P300 head can be removed and a BelGAS P200 head installed to up-size your system. It is important to know, a P300...

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