ZSQ piston pneumatic single-seat cut-off valve pneumatic quick cut-off valve is also known as the industrial production of automatic control execution unit, it shall, in accordance with the regulating instrument signal requires cutting and open, also can quickly cut off alone and open, in order to meet the system of parameters such as pressure, temperature, flow rate and liquid level control requirements.

The product has simple structure, strong and reliable operation, convenient maintenance and the advantages of fire, explosion, widely used in petroleum, chemical industry, electric power, textile and other industries automation control system.

The major parts material:

Body: HT200, ZG230-450, ZG1Cr18Ni9Ti

The valve core and valve seat: 1 cr18ni9ti, 0 cr18ni12mo2ti (surfacing Stellite) PTFE

Stem: 1 cr18ni9ti, 2 cr13

Cover:, Q235A, 1 cr18ni9ti ZG230-450

O-rings, fluorine, oil resistant rubber

Packing: ptfe, flexible graphite

Technical parameters and performance indicators:

Nominal diameter DN :32 40 to 50 (25 mm) 20 65 80 100 125 150 80

 Kv rated flow coefficient :8 12 29 43 70 110 165 270 440 110

Stroke (mm): 8 12 20 to 25 40 to 50

Cylinder diameter (mm): 81 116 135 156 205 116

Allow leakage (m1 / min) :0 (soft) grade VI (hard seal GB/T4213-92)

Cut off time: ≤1.5S ≤2.5S ≤3.5S

Working temperature (℃) :- 20 ~ 200 (room temperature) - 60 ~ 550 (high temperature) - 250 ~ 60 (low temperature type)

Flow characteristic: quick opening (on - off)

Nominal pressure PN (MPa): 1.6, 2.5, 4.0, 6.4 (6.3) / 2.0, 5.0, 11.0

Allow the differential pressure (MPa) :6.4 5 3 1 0.8 0.8 0.6 1.6 1.6

The valve body material: HT200,, ZG1Cr18Ni9, ZG0Cr18Ni12Mo2Ti ZG230-450

Air joint: M10 * 1 (DN15-100), the M16 * 1.5 (DN125-350)