large capacity direct-operated high pressure regulators designed for loads up to 10.7 to 14 million btu/hr respectively. the 627 and 630 are normally used in conjunction with type s302g or s202g units, however, they can also be used on final-stage(pounds to pounds) service .atype 1805 relief valve is recommended to prevent excessive build-up in the downstream line. the diaphragm case and body of the type 627 can be rotated in four positions to allow easy installation. additional configurations of the 627 with internal relief and cotrol line connections for monitor systems are available