Features:1) In-built slam-shut valve: a) Pneumatic control b) Slam-shut accuracy c) Reaction period 2) Regulator bore: 7/16"3) Threaded connections: Inlet / outlet: 3/4" x 1 1/4 BSP4) Standard working temperature: -20 +60oC5) Assembly: plane soft encapsulating, ball type metal to metal encapsulating6) Gas: low temperature gas