Listed manufacturers
No valves manufacturers are listed yet
We add manufacturers industry by industry. If your company supplies valves, you can list it free and buyers reading this page will find you. Your details are reviewed before they appear.
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Include a drawing revision, material grade, quantity, delivery destination, and required inspection documents. Confirm the manufacturer can meet your exact specification.
Manufacturing for valves
The valve industry makes valves for water, oil, gas, steam and process fluids, and depends on suppliers of castings, forgings, bar stock, seals and actuators. Valves are safety-critical when they hold pressure and isolate hazards, so buyers insist on defined standards, material traceability and documented testing.
What buyers need from a supplier
- Valve bodies and bonnets cast or forged in the right material, with certificates and checked soundness.
- Accurate machining of seats, stems and seating surfaces, which decide sealing and life.
- Pressure and leakage testing of each valve to the relevant standard, with test records.
- Trim and seal materials that suit the fluid and temperature, including corrosion-resistant alloys where needed.
- Traceability of materials to certificates, and markings on each valve that identify its class and material.
- Consistent supply of castings, forgings and components to the valve maker’s schedule.
Approvals and standards to ask about
| Ask about | What it shows |
|---|---|
| Valve design and test standards | Industry standards for the design, dimensions and testing of valves, such as pipeline valve and pressure testing standards. |
| Quality programme | A quality management system specification used by suppliers to industries such as oil and gas. |
| Material certificates | The grade and properties of body, trim and bolting materials for each lot. |
| Third-party inspection | An independent inspector’s witness of tests and documents, on behalf of the buyer. |
Ask any supplier for the certificate, and verify it with the issuing body or the buyer. A listing on this site is never evidence that a company holds an approval.
Typical sourcing requirements
Valve bodies, stems, seats.
What to qualify before you quote
Define pressure class, leakage limits, actuation, and material certificates.
Frequently asked questions
What tests are done on a valve before delivery?
Commonly a shell pressure test and a seat leakage test to the relevant standard, with additional tests for special duties. Ask for the test reports for your order.
Why is material traceability important for valves?
It proves that the body and trim are made of the specified material, which matters for pressure safety. Markings should link each valve to its certificates.
How do I choose between cast and forged valve bodies?
Cast bodies suit larger sizes and complex shapes at lower cost, while forged bodies suit smaller sizes and higher pressures with better structure. The specification and duty decide.
What does a valve supplier need from a casting or forging supplier?
Certified material, dimensional consistency, soundness testing, and dependable delivery. Many valve makers audit their casting and forging suppliers.
How do I qualify a new casting or forging supplier for valves?
Audit the foundry or forge, review its material and test records, approve first samples with full inspection and test the first valves made from them. Agree on corrective action for any problem.
Can I contact the manufacturers listed here directly?
Yes. Each listing shows the contact details the company has published, with no lead form or middleman. Verify certificates with the issuing body and confirm testing and capacity with the company before ordering.