Opening pressure and reseating
Bench testing verifies the pressure at which the valve opens and records an indicative reseating pressure. The required setting and acceptance criteria are established from the documentation and operator's brief.
Offered services / Valves and pressure systems
Safety valve service and testing
We prepare safety valve inspection, servicing and adjustment followed by set-pressure and seat-tightness testing on a VENTIL VC25SRV test bench.
Operating context
The whole application matters.
The brief starts with valve identification, its process duty and the required setting. Before intervention, we need the medium, pressure, temperature, connections and available manufacturer documentation. Dismantling, cleaning, component inspection and an appropriate repair scope are agreed according to condition. Replacement of seals, springs or other parts and any seat lapping are assessed against the valve design and manufacturer instructions. Servicing is followed by agreed tests and a report clearly linked to the individual valve.
Scope of the solution
- Initial valve identification, inspection and repairability assessment.
- Cleaning, agreed component replacement and any seat restoration to manufacturer instructions.
- Adjustment and set-pressure testing with an indicative reseating-pressure record.
- Seat-tightness testing using laser bubble counting.
- Gas or liquid tests to the agreed procedure; the bench's liquid system uses water.
- Specification and supply of spring loaded and balanced bellows safety valves for agreed operating conditions and the associated relief route.
Engineering priorities
From operating need to design.
Seat tightness
Gas testing uses a laser bubble counter. Meaningful assessment requires an agreed test pressure, medium, permissible leakage and evaluation method appropriate to the valve.
Size and test conditions
Bench documentation specifies a clamping range of DN 15–250, or ½–10 inches. Suitable pressure, sealing plates and adapters are checked for the particular connection; maximum pressure varies with valve size.
Supply and replacement of relief valves
Service work can be followed by supply of a conventional spring loaded or balanced bellows safety valve. Replacement requires checking the fluid, required relief duty, backpressure and inlet and outlet connections. Matching the original valve size alone does not establish suitability of the replacement assembly.
Before engineering
Inputs that matter.
- Valve manufacturer, type, identification and documentation.
- Nominal size, flange or other connection arrangement and pressure class.
- Process medium, temperature, required set pressure and any backpressure.
- Fault history and previous service or test records.
- Acceptance criteria, schedule and cleanliness when handed over.
Agreed with the proposal
Outputs and acceptance.
- Service record describing findings, work completed and parts replaced.
- Test report identifying the valve, method, medium and measured values.
- Set-pressure and seat-tightness results within the agreed scope.
- Digital report, with a pressure trace and measuring-instrument identification where agreed.
The actual scope and acceptance criteria depend on the application and contract.
Connected disciplines
Expertise for this application.
Related technologies
Connect the whole solution.
Before we start
Questions that shape the project.
Can testing be ordered without repair?
Yes. We agree the required tests, incoming condition and acceptance criteria. If inspection identifies a need for repair, the additional scope is agreed before it is carried out.
Does one maximum pressure apply to every size?
No. Test conditions depend on size, connections, valve condition and the limits of the particular test assembly. They are confirmed during technical clarification of the enquiry.
Your next project
A clear brief.
A practical next step.
Send your drawings, operating parameters or a short description of the change you need. We will review the technical interfaces and propose the next steps towards a quotation, clarifying any missing information with you.
Discuss your requirements ↗Prepare a technical brief →+420 731 771 147info@emkoproject.cz