The CHS series shut-off valve is a self-operated emergency safety shut-off valve and serves as a critical safety protection device in gas transmission and distribution systems. Equipped with optional over-pressure (or under-pressure) shut-off functionality, it can rapidly cut off gas flow when system pressure reaches a preset warning threshold, thereby safeguarding the downstream system.

Technical Specifications

Maximum allowable inlet pressure  P_{e, max}: ≤ 16 bar

Inlet pressure range  b_pe: 0.1–16 bar

Shut-off pressure range  W_h: 0.03–5 bar

Shut-off accuracy class  AQ: ≤ 5

Response time  t_a: ≤ 1 sec

Operating temperature  −20 °C to 60 °C

Flow coefficient  C_g: ≤ 4000

Connection size (flange)  DN25–DN150 (PN16)