The SR 703 Series Single Stage heavy-duty Carbon Dioxide Manifold Regulator offers 5 - 125 PSIG delivery range. Extra high capacity regulator has 1"-11 1/2 NPS F manifold connection and provides wide range of flow capabilities. Heavy Duty, high pressure piston regulator, ideally suited for pressure vessel and dead-end testing. Delivery pressures up to 4500 PSIG on some models.