Check valves from Hy-Lok, the majority of which are spring-loaded, allow the flow direction in pipelines with liquid or gaseous media to be reliably controlled and limited. Depending on the spring, the opening element opens at different pressures and opens the flow passage. Check valves reliably prevent a back-flow of the medium opposite the flow direction.
The O-ring sealed Hy-Lok 700 Series check valves are suitable for a working pressure of up to 206 bar (3000 psi) in the versions CV1 to CV4, and up to 137 bar (2000 psi) in the versions CV5 and CV6.
The stop of the opening element minimises the load on the spring. Various end connectors are available for the 700 Series check valves.
Pressure: | |
CV1 – CV4: | up to 206 bar (3000 psi) at 21 °C (70 °F) |
CV5 – CV6: | up to 137 bar (2000 psi) at 21 °C (70 °F) |
Temperature: | |
FKM: | -23 °C to 191 °C (-10 °F to 375 °F) |
NBR: | -23 °C to 121 °C (-10 °F to 250 °F) |
Nominal opening pressure: | 1/3, 1, 3, 10, 25 or 100 psi |
Connections: | 1/8 to 1 inch |
Materials: | Stainless steel 316 or brass |
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The O-ring sealed Hy-Lok 700H Series check valves are suitable for a higher working pressure of up to 413 bar (6000 psi) in the versions CVH1 and CVH2, and up to 344 bar (5000 psi) in the version CVH3.
The opening element has an elastomer seal to ensure a reliable shut-off. The stop of the opening element minimises the load on the spring. Various end connectors are available for the 700H Series check valves.
Pressure: | |
CVH1, CVH2: | up to 413 bar (6000 psi) at 21 °C (70 °F) |
CVH3: | up to 344 bar (5000 psi) at 21 °C (70 °F) |
Temperature: | |
FKM: | -23 °C to 191 °C (-10 °F to 375 °F) |
NBR: | -23 °C to 121 °C (-10 °F to 250 °F) |
Nominal opening pressure: | 1/3, 1, 5, 10 or 25 psi |
Connections: | 1/8 to 1 inch |
Materials: | Stainless steel 316 or brass |
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The Hy-Lok 700A and 701 Series check valves have a one-piece housing and are suitable for a working pressure of up to 206 bar (3000 psi).
The Hy-Lok 700A and 701 Series check valves have a one-piece housing and thus reduce the number of possible leaks. The 700A Series also has an adjusting screw that allows the desired opening pressure to be set individually. The detent screw locks the setting. The stop of the opening element minimises the load on the spring.
Pressure: | up to 206 bar (3000 psi) at 21 °C (70 °F) |
Temperature: | |
FKM: | -23 °C to 191 °C (-10 °F to 375 °F) |
NBR: | -23 °C to 121 °C (-10 °F to 250 °F) |
Nominal opening pressure: | |
701 Series: | 1/3, 1, 3, 5, 10 or 25 psi |
700A Series: | 3 to 600 psi, depending on the installed spring |
Connections: | 1/4 or 1/2 inch |
Materials: | Stainless steel 316 or brass |
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The Hy-Lok CVL Series check valves function without spring and are suitable for a working pressure of up to 413 bar (6000 psi).
The Hy-Lok CVL Series check valves have a particularly compact and sturdy design. They close under gravity and not with spring force.
Pressure: | up to 413 bar (6000 psi) at 21 °C (70 °F) |
Temperature: | -53 °C to 482 °C (-65°F to 900 °F) |
Materials: | Stainless steel 316 and 630 |
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