Valve Casting

Dawang Castings has more than 25 years of experience in valve casting and provides high-qualit cast valves for customers. Seeking affordable valve casting manufacturers? Do not hesitate to contact us. As one of China’s best casting manufacturers, we look forward to working with you.

Home » Valve Casting

Types Of Valve Castings

We can produce a variety of valve castings, including valve body casting and housing casting for ball valves, globe valves, safety valves, gate valves, butterfly valves, regulating valves, check valves, etc.

In the course of the casting valves process, we adopt superior materials: stainless steel, carbon steel, and other alloy steel. Our advanced casting processes such as investment casting and sand casting enable high-quality valve casting. If you are looking for price details for your casting valve needs, please contact us directly.

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Globe Valve Casting

Butterfly Valve Casting

Regulator Valve Casting

Gate Valve Casting

Valve Body Casting

Regulator Valve Casting

Valve Casting Process

Valve Sand Casting

Sand casting uses a sand mold with a cavity to pour molten metal in. Sand casting is better suited for larger valve components. Unlike lost wax castings, it has the largest casting weight of 2 tons. However, it requires more machining allowance for the subsequent machining operations.

Certain types of valve bodies are often produced by sand casting rather than investment casting, primarily due to size, cost and material considerations. Typical sand cast valves include:
  • Ball valve: Large ball valves are usually produced by sand casting.
  • Gate valves: used in the oil and gas industry, sand casting is suitable for large gate valves.
  • Butterfly valve: for large diameter, sand casting can produce large complex shapes at a lower cost.
  • Pressure reducing valve: Commonly used in high-pressure applications, sand casting ensures durability.
  • Pressure Relief valve: Used to regulate pipeline flow
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Valve Investment Casting

Investment casting is a traditional metal casting method, suitable for producing complex cast steel valve, such as butterfly and ball valves. Investment casting can ensure excellent dimensions, tolerances, and surfaces.

  • Ball valve: Small & medium-sized ball valves, especially those requiring close tolerances are often made by valve precision casting.
  • Control valve: Control valve’s complex internal structure is ideal for precision casting.
  • Safety valve: For key components in industrial protection, precision casting ensures the reliability.
  • Check valve: Small check valves are used in systems with high precision, such as hydraulic or pneumatic systems.
  • Shut-off valve: small globe valves require strict dimensional tolerances and are usually precision cast.

Permanent Mold Casting

Permanent mold casting or gravity die casting, utilizes metal molds. The mold casting molds can be used repeatedly. It is commonly used to craft valve components from non-ferrous metals. Brass and aluminum alloys are often chosen. The reusable molds make production cost-effective. This process is essential for maintaining consistent quality. Permanent mold casting has a faster production rate compared to investment casting.For types of valves mentioned above produced by valve sand casting and valve investment casting, permanent mold casting can also be chosen if the volume is large and consistency is needed.

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Lost Foam Casting

Lost Foam Casting is ideal for creating precise cast iron valve parts. It provides a good surface finish and size. Valve castings produced using this method are often near-net shape or net shape. They usually need little or no machining.

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Valve Casting Manufacturer: Pressure Testing and NDT

At Dawang Casting, we can ensure that our valve casting parts undergo pressure testing. We also perform non-destructive testing (NDT) to verify product integrity. We guarantee leak-free performance in all our manufactured products. Moreover, our silica sol casting process ensures excellent surface finish and dimensional accuracy. This allows us to meet drawing requirements through casting alone. It eliminates the need for more machining. This delivers unparalleled finishes and ensures premium quality for our customers.

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PED Material Certifications We Passed For Valve Casting

We can provide a variety of steel valve casting. All valve body casting has passed PED material certification (Pressure Equipment Directive 2014/68/EU), and AD2000 certification.

EN10213:1.4308, 1.4408, 1.4309,1.4409, 1.4581, 1.4469, 1.0619, 1.6220, 1.4308, 1.4408, 1.4581

AISI: 304,304L,316,316L

ASTM A351: CF3,CF3M,CF8,CF8M

ASTM A743: CG3M

ASTM A995: 5A

ASTM A216: WCA, WCB, WCC

Materials of Valve Casting Parts

Material TypeCharacteristicsCommon ApplicationsExamples of Specific Grades
Stainless SteelExcellent corrosion resistance, good strength and ductility.Corrosive environments.AISI 304, AISI 316, 17-4 PH
Carbon SteelGood strength and impact resistance. Easily weldable and machinable.High temperature and pressure.ASTM A216 WCB, ASTM A105
Alloy Steel (e.g., Chrome-Molybdenum)High temperature and pressure resistance, good toughness and wear resistance.Power plants, petroleum industry.ASTM A217 WC6, ASTM A182 F22
Grey Cast IronGood vibration dampening, excellent wear resistance, and good machinability.General utility valves.ASTM A126, Class B
Ductile IronHigher strength and ductility than grey cast iron.High-pressure and large valves.ASTM A536, Grade 60-40-18
Nickel AlloyExceptional corrosion resistance, especially in oxidizing and reducing environments.Severe corrosive environments.Hastelloy C276, Inconel 625
TitaniumExtremely high strength-to-weight ratio, excellent corrosion resistance, and high temperature limit.Aerospace and marine applications.Grade 2, Grade 5 (Ti 6Al-4V)

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Our Capabilities to Supply Valve Castings

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Questions You May Have About Valve Casting

What Tests Can Be Done On The Valve Casting?

When it comes the types of tests that can be done on the valve body casting, it mainly involves the following aspects: Air tightness test, salt spray test, hardness, MT, UT, PT, and RT. Through the tests stated above, the quality of valve body casting can be guaranteed.

Are There Any Discounts If The Quantity Of Casting Is Enouph?

Yes, about valve body casting parts: when the total weight (1 kind) reach 10 tons or valve quantity reach 10,000 pieces, Dawang castings will return you the mold fee.

What Testing Equipments Do You Have?
  • Metallurgical Microscope
  • Spectrometer Universal Testing Machine
  • Hardness Tester
  • Impact Tester
  • CMM
  • Magnetic particle flaw detector
Does Your Company Have Any Certifications?

ISO 9001, ISO14001, ISO45001, PED,DNV/GL, IATF16949

What's The Weight And Size Limit Of Your Product?

Weight: 0.1-1500kg. Size: 1800*2500*1000 (mm) .

What Casting Process Do You Have For Valve Casting?

Investment casting (lost wax) Sand casting Shell mold

Does Your Company Provide Cast Valve Machining Service?

Yes, we have our machining workshop and provide steel casting parts machining service. Plus, we offer the valve body casting customization service. We have our own horizontal and vertical machining center, CNC lathe, boring machine, drilling machine, and others.

If you have any more questions about valve castings, please contact us now. 


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