Low Pressure Medium Flow Check Valves
CHP Series
Introduction
CHP Series Low Pressure Medium Flow Check Valves are designed with a low cracking pressure, ensuring high sensitivity in controlling the media flow direction. These valves are ideal for high purity and ultra high purity applications.
Features
- Metal-to-metal sealing between the valve body and gasket ensures reliable leak-tight performance.
- A cone face seal between the seal ring and valve body delivers superior reverse sealing capability.
- Low cracking pressure provides high sensitivity and quick response.
Technical Data
| Prot Size | 1/2″ |
|---|---|
| Flow Coefficient (Cv) | 2.5 |
| Orifice Size | 10.3mm |
| Max. Working Pressure | 145 psig (10 bar) |
| Working Temperature | 14 ~ 176 °F (-10 ~ 80 °C) |
| Nominal Cracking Pressure | 1/3 psig (0.02 bar) |
| Cracking Pressure | ≤0.33 psig (0.023 bar) |
| Reseal Pressure | ≤9.95 psig (0.686 bar) |
| Leak Rate (Helium) | External | Inboard | ≤1×10 std·cm /s |
For valves not actuated for a period of time, the initial cracking pressure may be higher than the set cracking pressure.
Flow Data
Air @ 70 °F (21 °C)
| Orifice in. (mm) | Pressure Drop to Atmosphere psig (bar) | Air (l/min) |
|---|---|---|
| 0.41 (10.3) | 10 (0.68) | 80 |
| 0.41 (10.3) | 50 (3.4) | 2130 |
| 0.41 (10.3) | 145 (10) | 5300 |
Dimensions
| Connection Type and Size Inlet | Outlet | Dimension, in. (mm) A | B | B₁ | C | L |
|---|---|---|---|---|---|
| 1/2″ Integral Male FR Metal Gasket Face Seal Fitting | 0.94 (24) | 0.73 (18.5) | 0.73 (18.5) | Φ1.1 (Φ28) | 2.72 (69) |
