Chemical
Engineered valve solutions tailored for critical Chemical operating processes.
Piston Safety Relief Valve
Resistant
Sealing
Operation
Long Life
Alis Valves is an Piston Safety Relief Valve Manufacturer Supplier in India Offering designed to protect pressure systems from overpressure by automatically relieving excess pressure when it exceeds the set pressure. It is suitable for boilers, pressure vessels, pipelines, water systems, process plants, and industrial applications.
Product Specifications and Overview
ALIS Valves offers Piston Safety Relief Valves for industrial applications requiring reliable overpressure protection. These valves are designed to release excess pressure when the system pressure exceeds a predetermined setting, helping protect pipelines, equipment and process systems from potentially damaging pressure buildup.
Piston Safety Relief Valves are suitable for compatible applications in industrial processing, water systems, power generation and other pressure-handling installations. The correct valve selection depends on operating pressure, set pressure, fluid type, temperature, flow capacity and material requirements.
At ALIS Valves, we help you identify a suitable Piston Safety Relief Valve based on your application and project specifications. Contact us to discuss your requirements and find the right pressure protection solution for your system.
Size Range
DN15 to DN100 (½" to 4")
Pressure Rating
PN16, PN25, PN40 / Class 150–300
Set Pressure
As per system requirement
Operating Temperature
Up to 200°C*
Body Material
Carbon Steel / Stainless Steel / Cast Steel
Piston Material
Stainless Steel / Alloy Steel
Seat Material
PTFE / Metal Seat
Discharge
Open / Closed Discharge
Product Gallery
Industries Served
Applications
Emergency Shut-Off
High-performance flow automation engineered for Emergency Shut-Off operations.
High Pressure
High-performance flow automation engineered for High Pressure operations.
High Temperature
High-performance flow automation engineered for High Temperature operations.
Steam
High-performance flow automation engineered for Steam operations.
Frequently Ask Questions
A Piston Safety Relief Valve automatically releases excess pressure when system pressure reaches the preset relief pressure.
Its primary purpose is to protect pressure-containing equipment and piping from excessive pressure.
The valve must be capable of discharging enough fluid to prevent system pressure from exceeding the permitted limit.
Set pressure is the pressure at which the valve is intended to open, while operating pressure is the normal pressure of the system.
Yes, but the valve must be correctly sized and configured for the specific medium and relieving conditions.
When system pressure exceeds the set pressure, the piston moves against the spring force and opens the discharge passage to relieve excess pressure.
Blowdown is the difference between the set pressure and the pressure at which the valve closes after relieving excess pressure.
An undersized relief valve may not provide sufficient relieving capacity, potentially allowing pressure to remain above the safe limit.
Back pressure can affect the opening and closing behaviour and relieving capacity of the valve, so it must be considered during selection.
Yes, ALIS Valves is a Piston Safety Relief Valve Manufacturer in India, offering pressure-relief valve solutions for industrial pressure protection applications.