VPS 504, VPS 508 and VPM-VC gas valve tightness control systems per EN 1643
Country: Germany · Model: VPS 504 / VPS 508 / VPM-VC
VPS 504, VPS 508 and VPM-VC systems check the tightness of two consecutive gas shut-off valves before burner start-up or after shutdown per EN 1643. VPS works by pressure rise up to 50 kPa, the check takes 10–36 s, and VPM-VC compares pressures. They are installed on gas burners and gas engines.
- Standard
- EN 1643
- VPS 504/508
- for multiblocs MB, DMV and single valves up to DN 80; test volume ≤ 4 l (VPS 504) / 8 l (VPS 508)
- VPS principle
- pressure rise, up to 50 kPa inlet pressure
- VPS test time
- 10–36 s
Technical specifications
| Standard | EN 1643 |
|---|---|
| VPS 504/508 | for multiblocs MB, DMV and single valves up to DN 80; test volume ≤ 4 l (VPS 504) / 8 l (VPS 508) |
| VPS principle | pressure rise, up to 50 kPa inlet pressure |
| VPS test time | 10–36 s |
| VPM-VC principle | pressure comparison with one or two pressure switches; no limit on pressure and volume |
| Power supply | VPS 24 V DC (gas engines) and mains versions; VPM-VC 115/230 V AC or 24 V DC |
| Indication | tightness/leak LED, external fault signaling |
| Approvals | EU type per GAR and PED, EAC, UL, FM, CSA |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
VPS 504 is designed for multiblocs MB, double valves DMV and single valves up to DN 80, with and without a bypass. The test volume is not more than 4 l, no setup on site is needed, and operation does not depend on the residual pressure within the permissible range. VPS 508 works on the same principle for a volume of up to 8 l. The state is shown by an LED, an external fault signal is possible for series 02, 04 and S05, and a group signal for S01. The connection is plug-in for S01–S03 per DIN 4791 without rewiring, and for S04 and S05 screw terminals through a PG 13.5 cable gland; a 24 V DC version for gas engines is available. VPM-VC checks the valves together with one or two pressure switches without limits on pressure and volume. The sequence, filling and reset options are set by the user, and the module works alone or with a PLC, at 115/230 V AC or 24 V DC. The systems meet the requirements of EN 746-2 and ISO 13577, and VPM complies with the Machinery Regulation (EU) 2023/1230 and the LVD and EMC directives.
How to choose
The choice depends on the volume between the valves. Up to 4 l VPS 504 is suitable, up to 8 l VPS 508, and both work with an inlet pressure of up to 50 kPa. If the pressure or volume exceeds these limits, or a flexible test program together with a PLC is needed, VPM-VC is used. For a gas engine at 24 V DC there is a version of both types. At the inlet of the gas train, a GF filter is installed before the valves.
Request a price and lead time
VPS 504, VPS 508 and VPM-VC gas valve tightness control systems per EN 1643. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How long does the VPS tightness check take?
From 10 to 36 seconds. The result is shown by a tightness or leak LED.
What is the test section volume of VPS 504 and VPS 508?
Not more than 4 l for VPS 504 and up to 8 l for VPS 508.
What is the supply voltage of VPM-VC?
115/230 V AC or 24 V DC. The module works on its own, with a PLC or with a burner control unit.
What certificates does the system have?
EU type per GAR and PED, UKCA, AGA, EAC, UL, FM and CSA.
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