F-ZSQP Piston Type Cut-off Valve
F-ZSQP Piston Type Cut-off Valve
The Piston Type Cut-off Valve uses a precision piston actuator for accurate flow isolation and stable pressure control, ensuring zero leakage under high temperature and pressure, proven by API 598 and ISO 10497 test standards.
| Size Range | DN15–DN300 (½”–12″) |
| Working Pressure Range: | PN16–PN40 / ANSI 150–300LB |
| Working Temperature Range: | –20°C to +400°C |
| Body Material: | WCB / CF8 / CF8M / WC6 / WC9 |
| Connection Type: | Flanged (RF / FF / RTJ) |
| Applicable Medium: | Steam, Water, Air, Oil, Corrosive Fluids |
| Actuator Type: | Pneumatic Piston Actuator |
| Voltage Options | 24V DC / 110V AC / 220V AC |
| Design Standard | GB/T 12224 / ANSI B16.34 / IEC 60534 |
| Testing Standard | API 598 / EN 12266-1 / GB/T 13927 |
| Fire-Safe Design | API 607 / ISO 10497 |
| Certification | CE / RoHS / ISO 9001 / IP65 (Actuator) |
| Customization | Above Are Standard Parameter Samples. If You Have Specific Parameters And Materials, We Can Customize Them All. |
| Series | AT | AW | Linear | Pneumatic Cylinder | Sanitary |
|---|---|---|---|---|---|
| Valve Body | Ball valve, butterfly valve, plug valve | Gate valve, Global valve | Knife gate valve | Sanitary butterfly valve | |
| Function | Double Acting, Single Acting (Failure Resetting FO or FC) | ||||
| Control Accessories |
• Solenoid Valve, Filter Regulator Lubricator (F.R.L.), Positioner, Limit Switch, Handwheel • Solenoid Valve & Positioner are with Explosion-proof grade and Signal Feedback type for choice | ||||
| Operating Medium |
Clean and dry or lubricated air or inert gas. Any non-corrosive gas that is compatible with the internal parts of the actuator and the lubricant. The dew point temperature of the operating medium is -20°C, and the size of impurity particles is no more than 30u. When selecting a positioner, the impurity particle size should be no more than 5u. | ||||
| Air Source Pressure | 3bar to 8bar | ||||
| Operating Environment Temperature |
• Standard type: -20°C to +80°C • Low-temperature type: -40°C to +80°C • High-temperature type: -20°C to +160°C | ||||
| Lubrication |
Under normal operating conditions, the standard type does not require additional lubricant. For low-temperature or high-temperature environments, special lubricants are required. | ||||
Certified Quality for Industrial Valve Applications
Fleyenda valves and electric actuators are built for stable performance, reliable operation, and long-term industrial use. With certified quality support, they are suitable for water treatment, chemical processing, automation, and industrial process control systems.
FAQs That 80% Users Interest
1. What makes the Piston Type Cut-off Valve more reliable than conventional shut-off valves in process control systems?
• The pneumatic piston shut-off valve ensures tight sealing and fast response under fluctuating pressure.
• Its linear motion design provides precise positioning and stable flow isolation.
• The PTFE-seated piston valve minimizes leakage and extends maintenance cycles.
• Suitable for oil, gas, steam, and chemical systems under high pressure and temperature.
2. How can I choose the right size and pressure rating for a Piston Actuated Control Valve in industrial pipelines?
• Determine maximum flow rate and differential pressure before sizing the industrial piston valve.
• Match the pressure class (PN16–PN40 / ANSI 150–300) to operating conditions.
• Select actuator and trim combinations that ensure accurate flow control without vibration.
• Use a modulating piston valve with high turndown ratio for variable load systems.
3. What maintenance practices improve the service life of a Pneumatic Piston Shut-off Valve in high-temperature or corrosive media?
• Choose corrosion-resistant materials such as stainless steel or alloy steel piston valves.
• Inspect seats and seals regularly to maintain zero-leak performance.
• Lubricate actuator parts and test pneumatic control response periodically.
• Replace worn piston guides or gaskets to ensure long-term sealing integrity.
4. Can the Piston Operated Shut-off Valve be integrated with automated plant control systems?
• Compatible with smart positioners and feedback for DCS or PLC integration.
• The pneumatic actuator valve supports fail-open or fail-close configurations.
• Enables predictive maintenance through digital control interfaces.
• Easily connects to automation pipelines using standard signal ranges.