Valve Manufacturing

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In order to help global customers better understand our products, we are committed to providing you with detailed product information to help you choose the products that meet your needs.

Advantages of Valve Manufacturing

Leierwo has been deeply involved in the precision casting field for many years, particularly accumulating extensive experience in the manufacture of valve components. The company specializes in the production of precision castings made of carbon steel, alloy steel, and stainless steelโ€”materials commonly used in the valve industry. By utilizing advanced technologies such as melt casting and silica sol processes, the company is able to achieve high-precision molding of complex structural parts, meeting the performance requirements of valves under high-temperature, high-pressure, and corrosion-resistant operating conditions. Furthermore, Leierwo emphasizes custom production based on customer drawings, enabling it to better match valve castings to specific customer needs, ensuring product sealing and structural stability.
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Main Material Selection

Selecting the right material for valve castings is crucial to ensure durability under complex operating conditions, including high pressure, extreme temperatures, and corrosive environments. Material selection should prioritize corrosion resistance, high-temperature strength, cavitation resistance, and excellent machinability. Stainless steel is often the preferred choice due to its superior overall performance.

Common Materials for Valve Castings

Stainless Steel Series:
316/316L: Ideal for marine environments and chemical or petroleum industries due to excellent chloride corrosion resistance.
304/304L: Cost-effective for general corrosive environments.
410: Martensitic stainless steel with moderate corrosion resistance, suitable for high-temperature steam valves.
17-4PH: Precipitation-hardened stainless steel offering high strength and corrosion resistance for high-performance valves.

Carbon Steel Series:
WCB: Common for general-purpose valves at room temperature.
4130: Suitable for high-pressure and high-temperature valve housings.

Specialty Alloy Series:
2205 Duplex Stainless Steel: Excellent stress corrosion resistance, ideal for marine and chemical applications.
Cobalt Alloys (Co6, Co12): Suitable for valve sealing surfaces exposed to extreme high-temperature wear and erosion.

Key Casting Service Options

The casting method directly affects valve performance, sealing integrity, and pressure resistance. Choosing the right casting service is essential for functional reliability.

Investment Casting:
Preferred for medium- and high-pressure valves.
Ideal for components with complex internal cavities and precise mating surfaces, such as valve bodies and sealing seats.
Ensures surface roughness โ‰ค Ra1.6ยตm, reduces casting defects like pores and shrinkage, and minimizes leakage risk.
Especially suitable for stainless steel and alloy valves under high pressure.

Sand Casting:
Suitable for low-pressure, large-scale valve production.
Ideal for municipal water supply gate valves or other symmetrical, simple-shaped valves with moderate precision requirements.
Offers advantages in low cost and high production efficiency.

CNC Machining:
Focused on critical mating areas like valve flanges and stem shafts.
Ensures flatness and perpendicularity โ‰ค0.02mm/m for precise assembly.
Essential for achieving tight tolerances and leak-free connections after casting.
What We Offer
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Leierwo is committed to providing the highest quality precision metal parts manufacturing services, including precision casting, investment casting, sand casting, and CNC machining. We offer customized solutions and can complete your design within 3โ€“5 weeks, depending on the complexity of the parts. Before mass production, we provide one free sample for testing and approval.
Investment Casting Service
Features: Investment casting has high precision, can adapt to complex shapes, has smooth surface and little material waste.
Applications: aerospace, precision machinery, automobiles, medical equipment, etc.
Sand Casting Service
Features: It uses sand mold, which is low in cost and suitable for large and complex-shaped metal castings.
Applications: automotive parts, mechanical structural parts, large castings.
CNC Machining Services
Features: high precision, complex parts, and mass production.
Applications: molds, medical device parts, aluminum alloy engine cylinder blocks/cylinder heads.
Our Casting Services โ€“ Fufilled Across Metal Grades
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Leierwo possesses extensive expertise across a wide range of alloy grades, enabling our customers to select the ideal materials to optimize their products and meet the most demanding global application requirements. Feel free to explore the alloy series listed below to find the perfect match for your specific needs.
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings
We Provide Comprehensive Manufacturing Solutions
Investment Casting
Sand Casting
3D Printing
Stainless Steel Castings
Carbon Steel Castings
Alloy Steel Castings

Start Your Project with Leierwo

1. Submit Your Inquiry
Send your CAD drawings and 3D files via email, specifying material grade, order quantity, surface finish, or any other relevant details.
2. Cost Calculation
Once we receive your design, our engineering team will carefully evaluate the drawings and calculate the price based on actual production costs as soon as possible.
3. Start Production
Upon pricing approval, our production team will prepare the materials and schedule production promptly.Leierwo always ensures on-time delivery.
4. Arrange Delivery
After production is completed, we will provide packaging details and arrange shipment via sea or air. We support global shipping for every order.

FAQ

We are a factory with over 20 years of experience in casting and machining. We have rich expertise in this industry. If you come across suppliers claiming to produce castings in a wide range of materials (such as steel, iron, stainless steel, copper, etc.), they are likely trading companies. If you see workshops actively producing parts, you can be assured that we are a genuine manufacturer.

Yes, as long as we receive CAD files or compatible 3D models that can be viewed with software like First Quote or Firstcut browser, we can provide a quotation. Please note that 2D drawings alone are insufficient for manufacturing precision components.

We support 3D CAD models from SolidWorks (.sldprt), ProE (.prt), and other CAD systems, commonly in IGES (.igs), STEP (.stp), ACIS (.sat), or Parasolid (.sat) formats.

We have an internal service system that responds to emails within 4 hours. If your request is urgent, please specify it in your email so we can prioritize your inquiry.

For rapid prototyping:
Silica sol casting: 20โ€“30 days
Sand casting: 7โ€“10 days
For mass production with machining included, the typical lead time is 45โ€“60 days.
More complex parts may require a different delivery schedule.

Yes, we provide samples based on your drawings for you to confirm structure and quality. If the sample does not meet your requirements, we will replace it free of charge until it is qualified.

We accept T/T (bank transfer), Alipay, credit card, etc. Typically, we require a 30% down payment upon order confirmation and the remaining 70% before shipment. For custom parts with complex requirements, additional pricing terms may apply.

We have a comprehensive quality control system that covers every step, from raw material procurement to machining processes and final inspection. For critical components, we strictly follow drawing standards and customer specifications.

All customer data is kept confidential. Only trained engineers are authorized to handle production orders. Third-party inspection or factory audits are welcome, or you may use our in-house quality team for final inspection.

Yes, we guarantee that all materials used are 100% genuine and as specified.

We value long-term cooperation and support our customersโ€™ production needs.

We believe every honest customer is a friend, and we treat our partnerships sincerelyโ€”building friendships and strong teams regardless of where our customers come from.

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