Cement
Engineered valve solutions tailored for critical Cement operating processes.
Pneumatic Closing Check Valve
Resistant
Sealing
Operation
Long Life
Alis Valves is an Pneumatic Closing Check Valve Manufacturer Supplier in India Offering designed to prevent reverse flow in piping systems with controlled pneumatic closing operation. It provides reliable flow isolation and helps reduce sudden backflow, making it suitable for water treatment, industrial process lines, pumping systems, chemical plants, and other automated applications.
Product Specifications and Overview
ALIS Valves manufactures and supplies Pneumatic Closing Check Valves in India for industrial applications where preventing reverse flow is essential. These valves use a pneumatic-assisted closing mechanism to help control valve closure and reduce the risk of sudden backflow in pipelines.
They are suitable for applications such as water treatment plants, pumping stations, chemical processing units and industrial piping systems. By helping prevent reverse flow, a Pneumatic Closing Check Valve can support the protection of pumps, pipelines and connected equipment. The right valve depends on factors such as operating pressure, flow conditions, fluid type, valve size and material requirements.
At ALIS Valves, we understand that every application has different operating needs. Our team can help you identify a suitable valve configuration based on your process requirements and project specifications. Contact us to discuss your application and find the right solution for your system.
Size Range
DN25–DN500 (1"–20")
Pressure Rating
PN10 / PN16 / PN25 / PN40 / Class 150
Body Material
Cast Iron / Ductile Iron / Carbon Steel / Stainless Steel
Disc/Poppet Material
SS / Carbon Steel / Ductile Iron
Seat Material
EPDM / NBR / PTFE / Metal
Pilot Air Pressure
As per actuator/control design
Closing Mechanism
Pneumatic / Pilot-Assisted Closing
Function
Reverse Flow / Backflow Prevention
Product Gallery
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High-performance flow automation engineered for Cryogenic operations.
Frequently Ask Questions
It is a check valve that prevents reverse flow and uses a pneumatic mechanism or pilot signal to assist or control the closing operation.
Pneumatic control can provide more controlled closing where normal pressure-driven closure alone is insufficient or where system shutdown requires a defined closing sequence.
Pilot pressure operates the pneumatic closing mechanism and must be sufficient to generate the required closing force.
Differential pressure determines the force acting on the disc/poppet and affects opening, closing, sealing and pressure drop.
Yes. It can be used where reverse flow prevention and controlled closing are required at pump discharge.
It depends on disc geometry, differential pressure, seat load, friction and required safety margin. The actuator/pneumatic mechanism should be sized from the manufacturer's torque or force calculation.
ALIS Valves offers industrial check valve solutions in India for reverse-flow prevention and controlled valve operation. Exact pneumatic closing configuration should be confirmed against the selected ALIS model.
Forward pressure opens the closure element. When flow reverses or the control system commands closure, the pneumatic mechanism moves the closure element toward the seat.
Yes, when the closing speed is properly controlled. The actual water-hammer response depends on pipeline length, flow velocity, pump characteristics and valve closing time. DM Valve & Controls | Your Valve Experts
The fail position depends on the pneumatic mechanism—spring return, hydraulic/pneumatic accumulator or other arrangement. It must be specified during selection.
Cracking pressure is the minimum differential pressure required to start opening the check valve.
Closing too slowly can allow excessive reverse flow, while closing too quickly can create pressure transients. The closing profile should match the hydraulic system.
In designs using pneumatic flow-control components, the closing speed can be adjustable. The available adjustment depends on the specific construction.
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