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 1/4BSP 4) Standard working temperature: -20 ~ +60oC 5) Assembly: plane soft encapsulating, ball type metal tometal encapsulating 6) Gas: low temperature gas