Venn Co.
Venn CS-4N Check Valve with Telescopic Tube (for Water and Hot Water)
Manufacturer: Venn Co., Ltd.
Model: CS-4N
Features
- Since it is a spring system that closes the valve before the backflow occurs when the pressure is reverse or the water is cut off, it is highly safe and prevents water strikes.
- The valve body part equipped with a synthetic rubber disc.
- It can use for hot water up to 90°C.
- It can supply with water with low pressure drop.
- Since the pipe end core can install, it prevents the generation of red water.
- The valve body part has a cartridge structure, so it is easy to maintain.
- The noise during running water is less than 40 dB (at rated flow rate), which is as low as that of piping.
Specifications
| Product Symbol | CS4N-F |
|---|---|
| Types of valves | Check Valve |
| Types | Check valve with telescopic tube (single type) |
| Nominal diameter | 20（3/4） |
| Applicable fluids | Tap water and hot water |
| Fluid temperature | 5~90°C (5~40°C when using pipe end core) |
| Application pressure | 1.0MPa or less |
| Expansion and contraction | Maximum face-to-face shrinkage of 117 mm to 12 mm |
| Anti-backflow pressure | Water level (1/2×D+30mm) ~1.5MPa D: Pipe outer diameter mm |
| Valve body operability | Below 20kPa |
| Pressure Drop | Below 20kPa |
| Rated flow rate | 38L/min |
| End connection | Inlet: JIS G1 (Water Supply Screw) Union Nut Outlet: JIS Rc3/4 Screw |
| Mounting Position | Water measuring device secondary side direct connection |
| Material: Body | CAC406 |
| Material Key parts | Plastic |
| Material: Disc | EPDM |
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