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Model NO.: SV20PA1-40
Pressure: High Pressure
Valve Structure: Pilot Piston Structure
Power Supply: DC Solenoid Valve
Usage: Emptying
Standard: DIN
Application: Industrial Usage, Water Industrial Usage, Household Usage
Nodular Cast Iron: Qt500
Trademark: Power or OEM
Transport Package: Carton
Specification: ISO9001
Origin: China
HS Code: 8481201000
- For sub-plate mounting, porting pattern to DIN 24 340 Form A, ISO 5781 and CETOP-RP 121 H
- For threaded connection
- With or without drain port
- With or without unloading function
- Available in 4 different cracking pressures
SV and SL valves are hydraulic pilot-operated check valves designed with a poppet type structure. They allow reverse flow when activated, making them ideal for applications where system pressure needs to be controlled or isolated.
These valves are commonly used to prevent unintended movement of hydraulically locked actuators or to stop a load from falling under pressure. The basic components include a housing, a poppet, a compression spring, a control spool, and optionally a pre-opening ball poppet valve.
Type SV (without drain port): This version allows free flow from port A to B. In the reverse direction, the poppet remains seated due to system pressure and spring force. When control pressure is applied at port X, the control piston moves right, lifting the poppet and allowing flow from B to A.
Type SL (with drain port): Similar to the SV type but includes an additional leakage port Y. This design helps manage pressure more effectively by isolating the annulus area of the control piston from port A, ensuring smoother operation and reducing pressure shocks.
Type SV...A... and SL...A... (with pre-opening): These models feature an extra pre-opening mechanism. When pressure is applied at port X, the ball poppet opens first, followed by the main poppet, which allows for a more controlled and gradual decompression of fluid under pressure.
The design ensures reliable performance across various industrial applications, including water systems, household use, and general industrial operations. These valves are manufactured using high-quality nodular cast iron (Qt500) and comply with international standards such as DIN, ISO 9001, and others.
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