Resources / buyer support
Useful before you send an RFQ.
Practical guides for the questions that usually create a second round of emails: construction, materials, connections, operating conditions and order documents.
New technical library / September 2026
Ten decisions that deserve more than a catalogue line.
Each guide separates the engineering decision, the evidence to request and the limits of what a certificate or material name can prove.
Stainless Steel Swing Check Valve Selection Guide
How to select a stainless steel swing check valve by flow, orientation, pressure, material, closure behaviour and inspection requirements.
Read the technical guide →Specification guide / ratingsValve Pressure Class and Temperature Rating Explained
A practical guide to valve pressure class, pressure-temperature ratings, material groups, seats, ends and the checks needed before an RFQ.
Read the technical guide →Material guide / cast valve bodiesCF8, CF8M, CF3M and WCB Valve Materials Compared
Compare CF8, CF8M, CF3M and WCB valve body materials without confusing cast grades, wrought grades, corrosion resistance and service suitability.
Read the technical guide →Connection guide / piping interfaceValve End Connections: Flanged, Threaded and Welded
Compare flanged, threaded, socket-weld and butt-weld valve ends by standard, dimensions, maintenance, welding and inspection requirements.
Read the technical guide →Standards guide / production testingAPI 598 vs ISO 5208 Valve Testing: What to Specify
Compare the scope and procurement use of API 598 and ISO 5208 without copying test tables or assuming identical pressures and leakage criteria.
Read the technical guide →Selection guide / ball-valve seatsBall Valve Seats: PTFE, RPTFE, PEEK and Metal
How to compare PTFE, reinforced PTFE, PEEK and metal-seated ball valves by pressure, temperature, media, cycling, leakage and torque.
Read the technical guide →Automation guide / ball valvesAutomated Ball Valve Specification and Actuator Checklist
Specify an automated ball valve by duty, torque, actuator supply, fail action, ISO 5211 interface, mounting kit, controls and package testing.
Read the technical guide →Certificate review / fire testingFire-Safe Valve Certificates: API 607 and ISO 10497
How to review API 607 and ISO 10497 fire-safe valve claims, test reports, qualification ranges, design changes and order documentation.
Read the technical guide →Standards guide / external leakageValve Fugitive Emissions: ISO 15848, API 641 and API 624
Understand ISO 15848-1, API 641 and API 624 valve fugitive-emissions claims, type tests, production tests and certificate review.
Read the technical guide →Quality guide / inspection planningValve Inspection and Test Plan: Hold and Witness Points
Build a valve inspection and test plan with review, witness, hold and surveillance points tied to procedures, acceptance criteria and records.
Read the technical guide →Core buyer resources
From enquiry data to final release records.
Valve RFQ and MTO checklist
Service data, design, materials, inspection, deviations and final document requirements.
Read the checklist →Testing guideShell, seat and backseat tests
What each pressure test examines, what the report should record and where the evidence stops.
Read the guide →Inspection guideHow to read a valve test report
Seven checks that connect a PASS result to the valve, procedure, instrument and acceptance basis.
Read the guide →Material controlFrom MTC to heat number
How material identity survives cutting, heat treatment, machining, assembly and final release.
Read the guide →Selection guideHow to compare ball valves
One-piece, two-piece, three-piece, bore, platform and maintenance questions.
Read the guide →Selection guideHow to compare check valves
Flow direction, installation position, backflow risk and connection questions.
Read the guide →Technical guideStainless steel materials
How to discuss CF8, CF8M and CF3M without treating a grade name as a complete design.
Read the notes →Quality guideValve document package
Drawings, material records, inspection, test scope and release documents.
Define the records →Ordering guideFrom inquiry to release
A stage-by-stage route from source information to confirmed order scope.
Review the workflow →ReferenceConnections and standards
Thread, weld and flange terminology to state without relying on assumptions.
Review the reference →Application guideSpecify the operating service
Medium, pressure, temperature, solids, cycles and maintenance access.
Review applications →