Valves, Valve Manufacturer

Valves

Valves are devices that work to control, regulate or direct flow within a system or process.valve is an important regulating device in the fluid transportation system.Valve fittings, including valves and fittings, are used in pipeline connections or control systems. Valves and fittings cannot exist independently and complement each other. Valve fittings are made of carbon steel, stainless steel, PVC, or other materials. The first two are commonly used.

Types

Common types of valves include:

Ball Valve: Quick 90° turn for fast on-off control, user-friendly.
Gate Valve: Straight-line flow, compact, and reliable shutoff.
Check Valve: Prevents backflow, self-activating for flow direction.
Globe Valve: Precise flow control with T, Y, or angle designs.
Butterfly Valve: Compact, quick-acting, ideal for tight spaces.
Needle Valve: Fine flow control for small piping systems.
Pinch Valve: Handles slurries, solids, with an isolating sleeve.
Plug Valve: Tight shutoff, great for high pressure/temperature.
Pressure Relief Valve: Releases excess pressure for system safety.

Common functional designations and their common design types include:
Isolation Valves: Ball, butterfly, diaphragm, gate, pinch, piston, and plug valves
Regulation Valves: Ball, butterfly, diaphragm, globe, needle, pinch, and plug valves
Safety Relief Valves: Pressure release and vacuum relief valves
Non-Return Valves: Swing check and lift check valves
Special Purpose Valves: Multi-port, float, foot, knife gate, and line blind valves

Valve connection type

Selecting the right valve connection isn’t just about compatibility—it also impacts functionality. Here’s a quick guide to common end types:

Threaded: Ideal for small systems like instruments or sampling points.
Flanged: The go-to choice for most piping systems, offering easy maintenance.
Butt Welded: Perfect for high-pressure or high-temperature applications.
Socket Welded: Suited for small-bore piping where threads aren’t allowed.
Wafer and Lug: Compact solutions for tight spaces, often used with butterfly valves.

Choose based on your system’s needs and constraints.

Valve Standards

The major standard organizations include the American National Standards Institute(ANSI), American Petroleum Institute(API), The American Society of Mechanical Engineers(ASME), British(BS), China valve standards(GB, JB, HG), and so on. Baowi steel provides standard resources for all interesting valves friends study.

ANSI Valve Standards
American National Standards Institute

ANSI Standard Code	ANSI Standard Name
ANSI A126	Grey iron castings for valves flanges and pipe fittings
ANSI A181	Standard specifications for forged or rolled steel pipe flanged forged fittings and valves and parts for general service
ANSI B16.10	Face to face and end to end dimension of ferrous valves
ANSI B16.34	Steel valves
ANSI B127.1	Constant-level oil valves

API Valve Standards
The American Petroleum Institute

API Standard Code	API Standard Name
API SPEC6D	Supplement 1 to API spec 6D (sixteenth edition ) specification for pipeline valves
API STD6D	Steel gate plug ball and check valves for pipeline service
API STD6D	API Specification for flanged steel gate and plug valves for drilling and production service
API SPE14D	API Specification for wellhead surface safety valves for offshore service
API 526	Flanged steel safety relief valves
API 527	Commercial seat tightness of safety relief valves with metal – to metal seats
API 528	API standard for safety relief valve nameplate nomenclature
API 529	Cast – forged Steel plug valves flanged ends
API 594	Wafer-type check valves
API 595	Cast iron gate valves flanged ends
API 597	Steel venturi gate valves flanged or butt welding ends
API 598	Valve inspection and test
API 599	Steel plug valves flanged or butt welding ends
API 600	Flanged and butt – welding – end steel gate and plug valves for refinery use
API 602	Compact design carbon steel gate valves for refinery use
API 603	150 – pound light – wall corrosion – resistant gate valves for refinery use
API 604	Ductile iron gate valves flanged ends
API 607	Fire-resistant testing of ball valves with soft contact faces
API 609	Butterfly valves to 150 PSIG and 150 F
API SPEC 6FA	Specification for fire test for valves
API SPEC 6FC	Specification for fire test for valves with automatic backseats
API BULL 6RS	Bulletin on referenced standards for committee 6, standardization of valves and wellhead equipment
API RP 11V6	Recommended practice for the design of continuous flow gas lift installations using injection pressure operated valves first edition
API RP 11V7	Recommended practice for repair, testing, and setting gas lift valves
API RP 520 PT 1	Sizing, selection, and installation of pressure-relieving devices in refineries part 1- sizing and selection
API RP 574	Inspection of piping, tubing, valves, and fittings first edition, replaces guide for inspection of refinery equipment Chapter XI
API RP 576	Inspection of pressure-relieving devices first edition
API STD 608	Metal ball valves-flanged, threaded, and welding end

ASME Valve Standards

The American Society of Mechanical Engineers

ASME Valve Standard Code	ASME Standard Name
ASME A105/105M	Standard Specification for Carbon Steel Forgings for piping applications
ASME A181/181M	Standard Specification for Carbon Steel Forgings for General purpose piping
ASME A182/182M	Standard Specification for forged or rolled alloy-steel pipe flanges, forged fittings and valves and parts for high-temperature service
ASME A727/727M	Standard specification for carbon steel forgings for piping components with inherent notch toughness.
ASME A961	Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
ASME B462	Standard Specification for Forged or Rolled UNS N08020, UNS N08024, UNS N08026, UNS N08367, and UNS R20033 Alloy Pipe Flanges, Forged Fittings, and Valves and Parts for Corrosive High-Temperature Service
ASME B834	Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel- Chromium-Molybdenum (UNS N08367) and Nickel- Chromium Molybdenum Columbium (Nb) (UNS N06625) Alloy Pipe Flanges, Fittings, Valves, and Parts
ASME D5500	Standard Test Method for Vehicle Evaluation of Unleaded Automotive Spark-ignition Engine Fuel for Intake Valve Deposit Formation
ASME F885	Standard Specification for Envelope Dimensions for Bronze Globe Valves NPS 1/4 to 2 El-1996 R(1996)
ASME F992	Standard Specification for Valve Label Plates El-1997 R(1997)
ASME F993	Standard Specification for Valve Locking Devices El-1997 R(1997)
ASME F1020	Standard Specification for Line-Blind Valves for marine Applications El-1996 RI’1996)
ASME F1098	Standard Specification for Envelope Dimensions for Butterfly Valves – NPS 2 to 24 EI-1993 R(1993)
ASME F1271	Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protection Applications EI-1995 R (1995)
ASME F1370	Standard Specification for Pressure Reducing valves for Water Systems, Shipboard
ASME F1508	Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services
ASME F1565	Standard Specification for Pressure-Reducing Valves for Steam Service
ASME F1792	Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service
ASME F1793	Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service
ASME F1794	Standard Specification for Hand operated, Globe-Style Valves for Gas (Except Oxygen Gas), and Hydraulic Systems
ASME F1795	standard Specification for pressure-reducing Valves for Air or Nitrogen Systems
ASME A230	Standard specification for steel wire oil – tempered carbon valve spring quality
ASME A232	Standard specification for chromium-vanadium alloy steel valve spring quality
ASME A350	Standard specification for forged or rolled carbon and alloy steel flanges forged fittings and valves and parts for low – temperature service
ASME A338	Standard specification for ultrasonic examination of heavy steel forgings
ASME A694	Standard specification for forgings carbon and alloy steel for pipe flanges fittings valves and parts for high-pressure transmission service
ASME A404	Standards specification for forged or rolled alloy – steel pipe flanged forged fittings and valves and parts specially heat-treated for high-temperature service
ASME A522	Forged or rolled 8% and 9% nickel alloy steel flanges fittings valves and parts for low – temperature service

China and International Valve Standards

China Standard Code	China Standard Name	Adopting Standard
GB12220	General valve – marking	ISO 5209
GB12221	Flanged ends metal valve – face-to-face dimensions	ISO 5752
GB12222	Multi-turn valve – the connection of the driving device	ISO 5210/1 – 3
GB12223	Part-turn valve – the connection of the driving device	ISO 5211/1 – 3
GB12224	Steel valve – general requirements	ANSI B16.34
GB12225	General valve – copper alloy casting ware technology requirements	ASTM B584
GB12226	General valve – gray casting iron technology requirements	ISO 185,BS 1452
GB12228	General valve – carbon forging steel technology requirements	ASTM A 105,A181
GB12229	General valve – carbon casting steel technology requirements	ASTM A703
GB12230	General valve – Ao casting steel technology requirements	ASTM A351
GB12232	General valve – flanged ends iron gate valve	ISO5996-1982, API 595
GB12233	General valve – iron gate valve and lift check valve	BS5152,5153
GB12234	General valve – flanged and butt-welding ends copper gate valve	API 600
GB12237	General valve – flanged and butt-welding ends steel ball valve	ISO7121, API 607
GB12238	General valve – flanged and wafer ends butterfly valve	BS5155
GB12239	General valve – diaphragm valve	BS5156,NFE29
GB12240	General valve – iron plug valve	API 593
GB12241	Safety valve – general requirements	ISO 4126
GB12242	Safety valve – characteristic testing solution	ANSI/ASME PTC25.3
GB12243	Direct spring-loaded safety valve	JIS B 8210
GB12244	Pressure reducing valve – general requirements	JIS B 8372, B8410
GB12245	Pressure reducing valve – characteristic testing solution	JIS B 8372, B8410
GB12246	Pilot operated pressure reducing valve	JIS B 8372, DSS405
GB12247	Steam trap valve – classification	ISO 6704
GB12248	Steam trap valve – technology terms	ISO 6552
GB12249	Steam trap valve – marking	ISO 6553
GB12250	Steam trap valve – face-to-face dimensions	ISO 6554
GB12251	Steam trap valve – testing solution	ISO 6948,7841,7842
GB/T13927	General valve – pressure testing	ISO 5208
JB/T6899-93	Valve fire-proof test	ISO10497
JB/T7927-95	Valve casting steelware out-form quality requirements	MSS SP55
ZBJ16006-90	Inspection and testing of valve	API 598

How to Choose the Right Valve

How to Choose the Right Valve？

Application: Consider the type of fluid, operating pressure, and temperature.
Size: Match the valve size to your pipeline to avoid flow restrictions.
Material: Choose corrosion-resistant materials like stainless steel or brass for harsh environments.
End Connection: Options like flanged, threaded, or welded connections depend on your system design.

Why Are Valves Important?

Valves ensure system efficiency, prevent leaks, and enhance safety. In industries like oil and gas, manufacturing, and water treatment, choosing the right valve can reduce downtime and improve overall performance.

To extend valve life and performance:

Perform regular inspections for wear and corrosion.
Follow proper installation procedures.
Use quality valves from trusted manufacturers.

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At BAOWI Steel, we prioritize safety and reliability. Whether transporting fluids or gases, our innovative steel products ensure leak-free performance, protecting your operations from risks and damage. Trust us to deliver the strength and precision your industry demands.

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