High-pressure (pounds-to-pounds) regulators usually reduce tank pressure to an intermediate pressure for use by another regulator. They may be used as high-pressure regulators on distribution systems when used in conjunction with a First-Stage downstream regulator. Type 64SR - is a high-pressure regulator, which has an internal relief valve. As such it may be used as a Final-Stage regulator on high-pressure systems. It may also be used as a First-Stage regulator when set at 10 psig/0.69 bar or less.

Type 630 large capacity direct-operated high-pressure regulators designed for loads up to 14,000,000. Additional overpressure protection is recommended to prevent excessive build-up in the downstream line.