Product Description
Specifications
| Part number | CHM5-SA/11N | Brand | Duplomatic MS |
| Valve type | Pilot operated check valve | Operation | Hydraulic pilot release |
| Nominal size | NG10 / CETOP 05 | Mounting interface | ISO 4401-05-04-0-05 |
| Controlled line(s) | A | Cracking pressure | 2 bar |
| Maximum operating pressure | 350 bar | Maximum flow, controlled lines | 120 l/min |
| Maximum flow, free lines | 120 l/min | Mounting | Modular / sandwich mounting |
| Seals | NBR (N), mineral hydraulic oil | Surface finish | Standard black phosphating |
| Catalogue mass | 1.9 kg | Overall dimensions (L × W × H) | 119.4 × 73.2 × 50 mm |
| Ambient temperature | −20 to +60 °C | Fluid temperature | −20 to +80 °C |
| Viscosity range / recommended | 10–400 / 25 cSt | Fluid cleanliness | ISO 4406:1999 class 20/18/15 |
| Pilot ratio | 2.3:1 | Decompression ratio | 14.9:1 |
Duplomatic CHM5-SA/11N pilot operated check valve
CHM5-SA/11N is a Duplomatic MS pilot operated check valve in NG10 modular sandwich construction. This execution has a check valve on line A, 2 bar cracking pressure and NBR seals. It mounts in an ISO 4401-05-04-0-05 valve stack without external interconnecting pipes.
The valve permits free flow toward the actuator and holds reverse flow in the controlled working line until hydraulic pilot pressure opens the check element. The SA configuration controls actuator line A. The pilot ratio is 2.3:1. A pre-opening stage decompresses the cylinder chamber before the main element opens; the decompression ratio is 14.9:1. Required release pressure depends on the load and circuit pressures.
Maximum operating pressure is 350 bar. Maximum catalogue flow is 120 l/min in the valve lines. Use HL or HM mineral hydraulic oils with the specified NBR seals and maintain fluid cleanliness to ISO 4406:1999 class 20/18/15. The recommended oil viscosity is 25 cSt.
IMPEX CONNECT supplies CHM5-SA/11N for industrial hydraulic systems, OEM equipment and replacement projects. Confirm the controlled lines, cracking pressure and mounting dimensions when selecting the valve. Supplied on order; availability and delivery time are confirmed with the quotation.