Description

Stainless Steel Valve Bodies Casting

Stainless Steel Fittings India manufactures premium Stainless Steel Valve Bodies using shell molding, sand casting, and investment casting processes. Our SS valve body castings deliver exceptional pressure integrity, corrosion resistance, and dimensional accuracy for globe valves, gate valves, ball valves, butterfly valves, check valves, and control valves.

Types of Stainless Steel Valve Body Castings

• Gate Valve Bodies – Full-bore and reduced-bore for isolation service
• Globe Valve Bodies – Throttling and flow regulation
• Ball Valve Bodies – Two-piece, three-piece, trunnion-mounted
• Butterfly Valve Bodies – Wafer, lug, double-flanged types
• Check Valve Bodies – Swing, lift, wafer check designs
• Control Valve Bodies – Globe, angle, cage-guided designs

Grades Available

• CF8 / CF8M / CF3 / CF3M (ASTM A351 – SS 304/316/304L/316L equivalents)
• CD4MCu (Duplex), CE8MN (Super Duplex), CN7M (SS 904L)

Casting Processes

• Investment Casting: Complex internal geometries, near-net shape, tight tolerances
• Shell Molding: Medium-complexity valve bodies, excellent surface finish
• Sand Casting: Large valve bodies above DN200, cost-effective

Standards & Pressure Ratings

Class 150# to 2500# per ASME B16.34. ASTM A351, API 600, API 602, API 603, ASME B16.34, EN 12516. Temperature range: -196°C to +538°C.

Applications

• Oil and gas refineries and pipelines
• Chemical and petrochemical plants
• Power generation and steam systems
• Marine and offshore installations
• Cryogenic and LNG plants
• Food, beverage, and pharmaceutical processing

Frequently Asked Questions (FAQs)

Q1: What casting process is best for stainless steel valve bodies?

Investment casting (lost-wax) is ideal for complex valve bodies requiring tight tolerances and smooth internal flow passages. Shell molding suits medium-complexity valve bodies. Sand casting is most economical for large valve bodies above DN200.

Q2: What pressure ratings are available for your cast valve bodies?

We supply valve bodies in pressure classes from 150# to 2500# per ASME B16.34, with ratings depending on grade and temperature. CF8M Class 600 is rated at 99.3 bar at 38°C as an example.

Q3: Can you cast valve bodies with integral flanged ends?

Yes. We cast valve bodies with integral flanged ends to ASME B16.5 and EN 1092-1. Integral cast flanges eliminate separate flange fittings, providing compact, leak-free assemblies.

Q4: What is the price of stainless steel valve body castings?

The base price is USD 11.30 per kilogram. Final pricing depends on grade, size, pressure class, casting process, machining complexity, and quantity. Contact us with drawings for accurate quotation.

Q5: Do you supply NACE-compliant valve body castings for sour service?

Yes. SS 316 and Duplex SS valve bodies are supplied compliant with NACE MR0175/ISO 15156 for H2S-containing environments, including proper heat treatment and hardness certification.

Q6: What NDT tests are performed on valve body castings?

Standard and optional NDT includes: Visual inspection, Liquid Penetrant Testing (LPT), Radiographic Testing (RT), Ultrasonic Testing (UT), and Hydrostatic pressure testing per ASTM, API, and ASME standards.

Q7: What minimum wall thickness can you achieve in cast valve bodies?

Investment casting achieves minimum 2–3 mm walls. Shell molding: 4–5 mm minimum. Sand casting: 5–8 mm minimum, depending on geometry and size.

Q8: Do you supply cryogenic-rated valve body castings?

Yes. CF3 (SS 304L) and CF3M (SS 316L) castings are supplied for cryogenic service to -196°C with impact testing per ASTM A352. Extended bonnet designs for LNG/LOX service are available.

Q9: What documentation accompanies valve body castings?

Standard documents: EN 10204 3.1 MTC, dimensional inspection report, heat treatment certificate, visual inspection report. Optional: RT report, hydro test record, third-party inspection certificate, NACE compliance statement.

Q10: What surface treatments are available for valve bodies?

Available treatments: Shot blasting (standard), passivation per ASTM A380, electropolishing, hard chrome on sealing surfaces, PTFE/ECTFE lining for chemical service.

Q11: What is the weight range for your valve body castings?

From 0.05 kg (needle valve bodies via investment casting) to 2,000+ kg (large gate valve bodies via sand casting). We cover the full range of industrial valve sizes.

Q12: Do you accept OEM orders with customer drawings?

Yes. We are a dedicated OEM manufacturer accepting DXF, DWG, PDF, STEP, and IGES formats. NDA agreements protect your intellectual property. Our engineers review drawings for castability before tooling development.