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Use this guide to prepare a forged valve enquiry. Compare material families, understand pressure-temperature ratings and define end connections, tests and certificates. Online guidance is preliminary. The quotation states the offered construction, operating limits, applicable standards, tests and certificate scope.
Twelve field guides for preparing valve specifications and checking supplier quotations. The guides identify the relevant standards, service data, construction details and documents to state in the RFQ.
A practical guide to API 602 gate, globe and check valves, including scope, related standards, purchase data and certification wording.
Read guide →StandardsCompare API 602 and API 600 gate-valve scope, size overlap, end connections, bonnet construction and RFQ requirements.
Read guide →ConstructionCompare forged and cast valve bodies by manufacturing route, material designation, size, geometry, examination and service requirements.
Read guide →MaterialsCompare ASTM A105, normalized A105 and ASTM A350 LF2 forged valve materials by heat treatment, toughness, temperature basis and documentation.
Read guide →MaterialsTechnical comparison of ASTM A182 F316 and F316L forged valve materials, with guidance on welding, certification, PMI and complete valve specification.
Read guide →ConnectionsCompare raised-face and ring-type-joint valve flanges, including gasket systems, groove matching, dimensions, installation and RFQ data.
Read guide →ConnectionsCompare SW, BW and NPT forged valve ends by interface standard, installation, inspection, pipe data and RFQ requirements.
Read guide →ConstructionCompare bolted, welded and pressure-seal valve bonnets by pressure-boundary joint, maintenance access, service and purchase requirements.
Read guide →ConstructionCompare T-pattern and Y-pattern forged globe valves by flow path, pressure loss, installation envelope, operation and RFQ data.
Read guide →ConstructionCompare piston-lift and swing forged check valves by closure mechanism, orientation, pressure loss, transient response and specification data.
Read guide →MaterialsList each forged-valve trim component, its material and any hardfacing. A trim number alone does not define the service basis.
Read guide →SpecificationA field-by-field forged valve RFQ checklist covering duty, size, rating, materials, ends, construction, testing, documents and delivery data.
Read guide →Body material is selected against temperature, pressure, corrosion, impact and project requirements. Trim, ball and seat materials are then checked as separate components so the final operating range reflects the complete construction.
Allowable pressure changes with body material and temperature and must be assessed against the applicable material group and valve design standard. Values shown online are preliminary; the quotation and approved datasheet define the offered limits.
End-to-end dimensions and flange, threaded or weld details depend on valve type, size, pressure class, construction and design standard. Request an approved dimensional drawing before finalizing piping, fabrication or installation.
For PN flanged valves, select one available EN 558-1 basic series for the chosen DN. For ASME flanged valves, the configurator applies the documented face-to-face value automatically where the exact class, valve family and NPS are covered.
State certificate, inspection and project requirements in the RFQ. The quotation identifies the offered scope before an order is placed.
Type 3.1 inspection documents can be quoted for the agreed scope of metallic products. The quotation states which pressure-containing parts, internals and bolting are covered.
Type 3.2 inspection documents can be quoted when third-party validation is specified. Agree the inspection authority, hold points and document scope before order.
NACE MR0175/ISO 15156, PMI, hardness, impact testing, NDE and witness requirements must be stated at RFQ stage. The quotation identifies the included scope and any stated limits.
Include valve type and quantity, medium, design and operating pressure, design and operating temperature, nominal size, end connections, preferred materials, applicable standards, testing, certificates, delivery location and requested delivery date.