--- title: "Industrial Valves: Standards, Types & Sourcing Guide for B2B Buyers" date: 2026-08-12T09:40:23Z modified: 2026-08-24T08:25:10Z permalink: "https://www.tgvalve.com/blog/industrial-valves/industrial-valves-standards-and-sourcing-guide/" type: post status: publish excerpt: "" wpid: 3476 categories: - Industrial Valves featured_image: "https://www.tgvalve.com/wp-content/uploads/2026/08/img_0-3.webp" featured_image_alt: TG Valve industrial facility demonstrating industrial valves timestamp: 2026-08-24T08:25:10Z tags: - Industrial Valves --- ## Quick Answer: Industrial valves are mechanical devices that isolate, regulate, or check the flow of liquids, gases, and slurries in piping systems. They are used across [oil and gas](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/page/oil-gas-pipeline-valve-solutions.md), water treatment, and process plants. Buyers qualify them against API design standards, ASME [](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/butterfly-valve-pressure-rating-guide.md)pressure ratings, and ISO or EN test methods, then confirm material grade and certification before ordering. TG Valve manufactures gate, ball, butterfly, and check valves certified to CE, API, ISO 9001, EN 12266, DIN 3230, and UL. We offer procurement teams a documented basis for sourcing decisions. Selecting the correct valve protects a system from compliance failures, leaks, and rework at the initial installation stage. API, ASME, and ISO standards define the design, pressure class, and test methods that separate a documented valve from an unverified one. TG Valve produces its valve lines under CE, API, ISO 9001, EN 12266, DIN 3230, and UL certification. This valve sourcing guide explores valve types, standards, materials, certification, and how to source safely from a Chinese manufacturer. ## What Are Industrial Valves and What Is Their Role in Process Industries? Industrial-type valves are mechanical components that start, stop, throttle, or redirect fluid flow inside a pipe or vessel. They are used across every stage of industrial processing, including pipelines, refining, power generation, and [water treatment](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/what-is-concentric-butterfly-valve-water-treatment.md). Engineering teams check industrial valve applications as carefully as pumps and piping. Failed valves can result in unplanned shutdowns or safety risks. ## What Are the Major Industrial Valve Types? There are six major industrial valve types that cover most industrial valve applications. Industrial valve selection starts with gate, ball, globe, butterfly, check, and knife gate. - Gate valves isolate large-diameter lines with minimal pressure drop. - [Ball valves](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/what-is-ball-valve.md) provide fast, bubble-tight shutoff. - [Globe valves](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/page/globe-valve-manufacturer.md) throttle flow precisely in steam service. - [](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/butterfly-valve-manufacturers-in-europe-review.md)Butterfly valves offer a compact option for large-bore lines. - Check valves stop backflow automatically. - Knife gate valves cut through slurries that would jam a standard gate. ## Which International Standards Govern Industrial Valve Design and Testing? Industrial valve standards are governed by API valve standards and ASME valve standards. Below is a table that summarizes the scope of standards for different valve types. ## What Are the Industrial Valve Materials Used by Manufacturers? Selecting industrial valve materials depends on the media, pressure, and temperature the valve will experience in service. | **Standard** | **Scope** | **Applies To** | | --- | --- | --- | | API 600 / 602 / 603 | Cast, forged, and corrosion-resistant gate valve design | Gate valves | | API 608 / 609 | Ball and butterfly valve design | Ball, butterfly valves | | [API 6D](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/what-is-api-6d.md) | Pipeline valve design across multiple types | Pipeline valves | | [API 598](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/post/valve-standards-api-6a-vs-api-6d-vs-api-598.md) | Shell and seat leakage test procedure | All valve types | | API 607 / 6FA | Fire-safe test for soft and metal-seated valves | Ball, butterfly, gate | | ASME B16.34 | Pressure and temperature ratings for valve bodies | All valve types | | ASME B16.5 | Flange dimensions and ratings | Flanged valves | | EN 12266 / ISO 5208 | European and international pressure and leak test methods | All valve types | ## What Are the Industrial Valve Materials Used by Manufacturers? ![Infographic showing industrial valves comparison and selection](https://www.tgvalve.com/wp-content/uploads/2026/08/img_1-3.webp "industrial valves selection guide infographic") Selecting industrial valve materials depends on the media, pressure, and temperature the valve will experience in service. - WCB carbon steel is the standard grade for general oil, gas, and water service at moderate temperatures. - CF8 and CF8M stainless steel, the cast equivalents of 304 and 316, handle corrosive chemicals and food-grade applications. - Ductile iron suits lower-pressure water and wastewater lines at a lower cost than steel. - Bronze is common in smaller valves for water, steam, and marine service where its natural corrosion resistance offsets a lower pressure rating. ## What Certifications Should a Valve Carry? Industrial valves should carry certifications that confirm that a design, material, and test program meet a recognized standard rather than a supplier’s claim. - CE marking is required for valves sold in the European Economic Area. - An API monogram license shows that a manufacturer passed an API audit for the covered standard. - ISO 9001 certifies the factory’s quality management system. - NACE MR0175 confirms that materials resist cracking in sour, hydrogen sulfide service. A CE API ISO valve package with EN 12266 and DIN 3230 compliance offers buyers verified performance instead of untested claims. ## What Quality Assurance Testing Do Valves Require? TG Valve documents three test types on its certificates to assure buyers that all products have undergone quality testing. - Hydrostatic testing pressurizes the valve body with water above its rated pressure to confirm shell integrity. - Pneumatic testing checks seat leakage with air or nitrogen, since gas reveals leaks that a hydrostatic test can miss. - Fire safe testing, run to API 607 or API 6FA, exposes a valve to an open flame and verifies it still seals afterward. ## What Are the Most Common Pitfalls in Industrial Valve Procurement? The three most common pitfalls in valve procurement are choosing undersized valves, wrong material selection, and missing certifications. Checking these three items before procurement helps prevent most valve-related delays on EPC projects. - Undersized valves create excess pressure drop and premature wear once installed. - Wrong material selection, such as carbon steel for a corrosive chemical stream, leads to early failure. - Missing certifications are the most common paperwork gap, leaving a buyer unable to prove compliance during a project audit. ## How Do You Source Industrial Valves from China? Sourcing industrial valve manufacturers in China requires a factory audit, verification of API certification, and requests for valve certification and testing documents. - A factory audit, in person or by video, confirms that the casting source, machine shop, and test bay match what the supplier claims. - Verifying API certification means checking the monogram license number against the API database, not accepting a certificate photo. - Material test reports should carry a heat number traceable to the steel mill. - Pressure testing requirements, including hydrostatic and seat leak records for the specific batch. These should be supplied with every order rather than as a generic template. ## FOB or CIF: Which Pricing Term Fits Your Order? Free on Board (FOB) pricing covers the cost of goods to the port of loading. This leaves freight, insurance, and import formalities to the buyer. This is ideal for buyers with an established freight forwarder. Cost, Insurance, and Freight (CIF) pricing bundles freight and insurance into the supplier’s quote. This gives a simpler landed cost estimate for buyers without in-house logistics support. Standard catalog valves usually take several weeks for production and sea shipping. Adding custom materials, non-standard pressure classes, or private branding increases both lead times and minimum order quantities. ## Why Partner With Proven Industrial Valve Manufacturers Such as TG Valve? Choosing established industrial valve manufacturers should not be taken at face value. The manufacturer must stand behind their product with a written warranty covering material and workmanship defects for a defined period after delivery. In addition, the manufacturer must supply certification and testing documents before shipping the order. TG Valve provides material certificates, test records, and technical support for spare parts and repairs after the sale. As a result, procurement teams are not left without documentation once the shipment clears customs. Buyers should confirm warranty terms and spare parts availability in writing before placing a purchase order, not after a valve fails in service. [![Expert Valve Manufacturer CTGV contact us](https://www.tgvalve.com/wp-content/uploads/2025/07/1753925655234.webp) ](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/page/contact.md) ## Frequently Asked Questions ### What documents should I request before paying for a bulk valve order? Ask for material test reports with heat numbers, pressure and leak test certificates for the batch, and a copy of the current certification license. Confirm that these match the purchase order specification before final payment. ### How long does a factory audit usually take for a new valve supplier? A single facility audit, whether in person or by video call, typically takes half a day to a full day. It covers casting sources, machining, assembly, and the test bay used for pressure checks. ### Why do two valves in the same pressure class perform differently at high temperature? Pressure ratings drop as temperature rises, and the rate of drop depends on the body material. A carbon steel and a stainless steel valve in the same class can carry different actual ratings at elevated temperatures. [Get Free Quote](https://www.tgvalve.com/wp-content/uploads/wp-mfa-exports/page/contact.md)