Virgin Engineers is a trusted stainless steel 347 manifold and SS 347H manifold valve manufacturer and supplier in Mumbai, India. We build our manifold valves to withstand harsh industrial environments, ensuring dependable control. For applications requiring heat and intergranular corrosion resistance, our SS 347 manifold valves are precision-engineered. Standard 2-way, 3-way, and 5-way manifold valves are available in 347 and 347H stainless steel.
Anti-carbide niobium stabilizes the 347 grade, improving its high-temperature performance. But SS 347H manifold valves have more carbon, which improves creep strength. The grades fulfill ASME B16.34 design regulations and ASTM A182 F347/F347H standards. This valve can withstand pressures up to 6000 PSI (414 bar) and temperatures from -54°C to 232°C. Standard sizes include ¼”, ½”, ¾”, and 1”, with end connections available in NPT, BSPT, and flanged types. Custom-built assemblies are also available upon request.
Industries such as petrochemicals, refineries, chemical plants, pharmaceuticals, and power stations frequently use our stainless steel 347H manifold valves. Our products come with various features like PTFE or graphite sealing, anti-tamper handles, and multiple stem tip designs, including needle and regulating types. Every manifold valve undergoes strict pressure and leak testing as per API 598 and MSS-SP-99. We also include full documentation support such as material test certificates, dimensional inspections, and heat traceability.
We provide complete documentation and traceability for every order, including EN 10204 3.1 mill test certificates and detailed dimensional reports. We securely pack each valve using moisture-resistant wrapping and sturdy wooden crates to prevent damage during transportation. If you need a trusted supplier for SS 347H manifold valves in India, our team is ready to assist you with technical specifications, stock availability, and competitive pricing.
ASTM A276, A351, A494 / ASME SA276, SA351, SA494
up to 6000 psig @ 100° F (414 barg @ 38° C).
1/8 to 1”, Custom Sizes available on request
up to 1200°F(648 °C)
Thread, Weld or Tube End
DIN, ASTM, BS and all International Standards.
STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
SS 347H | 1.4961 | S34709 | SUS 347 | - | X6CrNiNb18-12 |
Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
SS 347 | 0.08 max | 2 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 20.00 | 10xC – 1.10 | 9.00 - 13.00 | 62.74 min |
SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 8xC – 1.10 | 9.00 - 13.00 | 63.72 min |
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Stainless Steel S34700 / S34709 manifold valves are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.
The material tests performed on stainless steel 347/347H manifold valves are burst tests, Ultrasonic Test, Mechanical Testing, Cryogenic testing, low temperature testing, High pressure gas testing, High temperature testing , etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.
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