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SIS shut-off valve

SIS切斷閥

Product Overview

This product is a shut-off valve for SIS systems suitable for petrochemical industry. The product is designed according to API, GB standards, and has API, TS, SIL, Fire safe, explosion-proof certification. All series of products are tested for overall PFD, and the PFDavg value is less than 5E-03 under 1oo1 redundancy, and SIL2 is met as a whole.

Product design features

The product adopts maintenance-free metal sealing structure, and the sealing materials include HVOF, thermal spray, overlay welding, nitriding and so on. The product is equipped with a pneumatic or hydraulic actuator, and all specifications can quickly close the valve 2~3 seconds after the SIS trigger. The control pipeline of the valve adopts a closed-cycle design, and the actuator cylinder wall is completely isolated from the atmosphere, which can be used normally in heavy rain or low temperature environment, achieving true IP56/IP67 protection. The product is equipped with PST test module and speed control module as standard. The main control solenoid valve adopts SIL4 level high-quality brand model.

Products can be attached to explosion-proof covers according to customer needs, and solenoid valves can be upgraded with 1oo2, 2oo2, 2*2oo2 redundant configuration.

Product range

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