Heavy duty, high pressure piston regulator. Ideally suited for pressure vessel and dead-end testing. Delivery pressures up to 4500 PSIG on some models.

DESIGN/CONSTRUCTION • Machined brass body & housing cap • 2.5" (63.5 mm) gauges - brass • Cartridge type seat assembly with PCTFE seat • Piston type actuation - brass • Delrin cap bushing for smooth adjustments • External adjustable relief valves on F and G range models • Hydrogen models have ventable relief valves (J Series does not) • Sintered inlet filter - bronze Dimensions 6" W x 6.5" H x 6.25" D (152.4 mm x 165.1 mm x 158.8 mm) WEIGHT 4 lb. (1.81 kg) PERFORMANCE Maximum Inlet - 7500 PSIG with CGA 677 6000 PSIG without inlet fitting 5500 PSIG with CGA 701, 680, 347 4000 PSIG with CGA 577 3000 PSIG with CGA 540, 580, 346, 350

Panel Mounting Details All SR 4 Series regulator models may be panel mounted. (1.75" (44.5 mm) hole required in panel for mounting) For a flush panel mount installation order one panel mount nut 1409- 0093. For an adjustable panel mount installation order two panel mount nuts 1409-0093.