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Pneumatic parallel cut off valve
Model: ZSDⅡC (DX)
Nominal diameter: DN40 ~ 700mm
Nominal pressure: PN1.6 ~ 10.0MPa
Design and manufacture: GB / T12234-89
Structure length: GB / T12221-89
Flange size: JB79 GB / T9112-9131
Inspection and testing: JB / T9092-99 GB / T13927-92
Structural characteristics and working principle
1, the output of the implementing agencies through the valve stem on the role of the main spool, is designed to a certain angle, the main spool, converted into horizontal force around, but also through the secondary spool, sealing plate squeeze the two seats to form a double Negative seal, the seal does not leak, the torque is small, the switch valve seal with friction-free, fundamentally solve the spool stuck in the valve body or open the shortcomings of the phenomenon.
2, the pneumatic actuator adopts piston-type mechanism, the solenoid valve as the upper and lower part of the cylinder to control intake and exhaust switching elements to control the vertical opening and closing pieces for vertical displacement to control the valve opening and closing purposes,
3, with the use of the echo device for sending the valve switch-like signal, solenoid valve to achieve long-distance control, centralized control, automatic control, and on-site operation.
5, the valve opening and closing state of the scene instructions, the coat of the extension of the indicator rod to rise and fall, marking the valve is fully open (outrigger in the highest position), the valve is fully closed (outrigger in the lowest position).
6, with a single spring-reset pneumatic device or air tank to ensure that the power supply, air supply failure automatically switch, safe, reliable, speed, environmental protection, energy saving.



The main dimensions
Nominal diameter [DN] 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 700
L / mm
H / mm 1.6, 2.5MPa 865 965 1065 1345 1550 1810 2010 2295 2510 2700 3240 3655
4.0 892 995 1146 1417 1642 1896 2090 2312 2594 2804 3278 -
6.4 892 995 1146 1417 1642 1896 2090 2312 2594 2804 3278 -
10.0 895 906 1010 1162 1432 1658 1912 2105 2328 2610 2820 3295 -
Note Note △ for the coat type


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