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Gas Delivery Regulators


1/4” - 1” NPT, BSPT
Spring Reference & Pilot Operated

Description

The GDR Series Regulator provides reliable and precise pressure control in the most demanding applications. Optimized spring design with unique venturi design assures high flow with extremely low droop characteristics. Solid, non-tied diaphragm and all brass construction will provide leak-free and long-lasting performance. Regulator is fully balanced to virtually eliminate outlet pressure fluctuations due to inlet pressure variations. All GDR Series regulators are 100% factory tested.

Features

  • Fully Balanced Design: Maintains a constant delivery pressure regardless of inlet pressure fluctuations.
  • Optimized For High Flow: Unique Venturi Tube and Optimized Spring Design allows for high flow rates.
  • Wide Pressure Range: Inlet Pressures up to 550 PSI, Outlet Pressures up to 450 PSI.
  • Solid, Non-Tied, Diaphragm: Solid diaphragm eliminates potential leak path and increases sensitivity.
  • Configurable: Order Regulators with Various Porting Options, Panel-Mounted, with Chamber Pipe-A-Way, or Pilot Operated.
  • Oxygen Service Compatible: Designed for use in Oxygen Service and Cleaned for use in O2 Service standard.

Technical Data

Materials of Constructions

Dimensional Data

Flow Performance

Each chart provides a variety of regulator setpoints and its respective flow performance with a constant inlet pressure condition. Flow Testing was performed using Nitrogen gas at ambient conditions. Use gas conversion factors listed on the next page to convert flow rates to a different gas service. Regulators were set in a dynamic condition at 60 SCFH N2 flow.

How To Order


Note:
All Regulators are supplied with 2 (two) ¼” NPT Pipe Plugs. Pipe plugs are supplied finger tight. Final installation is the responsibility of the end user

PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, materials compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.

Repair Kits

PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, materials compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.

Replacement Spring Kits

PROPER COMPONENT SELECTION - When specifying a component, the total system design must be considered to ensure safe and trouble-free performance. Intended component function, materials compatibility, pressure ratings, installation, environment and maintenance are the responsibility of the system designer.

For Instructions on How to Select Your Model, click here.

Gas Delivery Regulator 500 (1/2 inch)
ModelSizeFile TypeDownload
4GDR-2BSPT1/4" BSPTSTEP Download
4GDR-4BSPT1/2" BSPTSTEP Download
4GDR-250B1/4" NPTSTEP Download
4GDR-375B3/8" NPTSTEP Download
4GDR-500B1/2" NPTSTEP Download

Gas Delivery Regulator 500 (1/2 inch) - Panel Mount
ModelSizeFile TypeDownload
4GDR-2BSPT-P1/4" BSPTSTEP Download
4GDR-4BSPT-P1/2" BSPTSTEP Download
4GDR-250B-P1/4" NPTSTEP Download
4GDR-375B-P3/8" NPTSTEP Download
4GDR-500B-P1/2" NPTSTEP Download

Gas Delivery Regulator 500 (1/2 inch) - Pilot Operated
ModelSizeFile TypeDownload
4GDR-2BSPT-PO1/4" BSPTSTEP Download
4GDR-4BSPT-PO1/2" BSPTSTEP Download
4GDR-250B-PO1/4" NPTSTEP Download
4GDR-375B-PO3/8" NPTSTEP Download
4GDR-500B-PO1/2" NPTSTEP Download

Gas Delivery Regulator 1000 (1 inch)
ModelSizeFile TypeDownload
4GDR-6BSPT3/4" BSPTSTEP Download
4GDR-8BSPT1" BSPTSTEP Download
4GDR-750B3/4" NPTSTEP Download
4GDR-1000B1" NPTSTEP Download

Gas Delivery Regulator 1000 (1 inch) - Pilot Operated
ModelSizeFile TypeDownload
4GDR-6BSPT-PO3/4" BSPTSTEP Download
4GDR-8BSPT-PO1" BSPTSTEP Download
4GDR-750B-PO3/4" NPTSTEP Download
4GDR-1000B-PO1" NPTSTEP Download