Product descriptionThe WEH® ultra-high-pressure relief valves protect fluid systems by opening at a preset set pressure and discharging excess medium via an outlet (B2). While closed, the valve remains seated by an internal spring until the set pressure is reached. Sealing is provided by a replaceable metallic seat. Delivery includes pressure rings and pressure screws for the corresponding HP 60° Cone & Thread tube connections.
Ordering and setting notesThe customer must specify the required set pressure when ordering. A tolerance of ±100 bar applies. WEH sets the valve at room temperature and tests tightness and release behaviour; the set screw is then sealed. Actual set pressure can vary due to temperature changes or after long intervals between actuations.
Technical data (table)Nominal bore: 2.5 mm
Max. operating pressure at B2: PS = 2,500 bar (36,259 PSI)
Set pressure: 400–2,500 bar (customer-specific). Tolerance: ±100 bar
Temperature range: +5 °C to +50 °C
Medium: Liquids according to Fluid Group 2 DGR, e.g. hydraulic oil
Operating medium inlet B1: M16x1.5 female
Materials: High-strength stainless steel
Connection geometry: HP fitting 60° Cone & Thread
Conformities / tests / approvals: Pressure-equipment type: pipe-like pressure-retaining part according to Article 2, No. 5 of the Pressure Equipment Directive; classification: Article 4, paragraph 3
Features- Supplied with pre-assembled pressure rings and pressure screws
- Can be installed vertically or horizontally
- Long service life thanks to metallic sealing
- Replaceable sealing seat
- Factory setting and testing of the requested pressure
ApplicationWEH® relief valves are designed for high-pressure hydraulic applications. Alternative versions are available for other media and uses. WEH® relief valves VRA-1-S1 are not classified as safety valves or safety accessories under the Pressure Equipment Directive 2014/68/EU or the ASME Boiler & Pressure Vessel Code.
Characteristics / specifications- Order number (SKU): C1-192214
- Product name: WEH® Relief valve (High Pressure)
- Nominal bore: 2.5 mm
- Max. operating pressure at B2: 2,500 bar
- Set pressure: 400–2,500 bar, tolerance ±100 bar
- Temperature range: +5 °C to +50 °C
- Medium: Liquids (Fluid Group 2 DGR)
- Operating medium inlet B1: M16x1.5 female
- Material: High-strength stainless steel
- Connection: HP fitting 60° Cone & Thread