5-axis CNC milling drawing: Al 7075-T6 block with pockets, toolpath and dimensions

CNC for Valve Bodies

Ball valves. Control valves. Pressure rated.

Q: Material selection for valve bodies?

General industrial: ductile iron (cost-effective, adequate). General process: 316L stainless. Marine/saltwater: Monel K-500. Oil & gas sour service: Inconel 625 or duplex 2205/2507. High temperature: Inconel 718 or 625. Aggressive chemistry: Hastelloy C-276 or Monel 400. Material selection is critical — specify based on fluid, temperature, pressure, and sour-service requirements.

Q: Pressure testing capability?

Hydrostatic pressure test to 1.5× rated pressure for 10 minutes (industrial standard per API 598). Helium leak detection for critical valves. Witnessed testing with customer or third-party inspection available. Documentation package includes: test pressure, duration, leak rate (if measured), pass/fail. For fire-safe valves per API 607, additional fire test at qualified lab.

Q: NACE compliance for oil & gas?

NACE MR0175/ISO 15156 governs materials for sour (H2S) service. Specific hardness limits: typically <22 HRC for wetted surfaces on pressure-containing parts. Material selection restricted (no free-machining grades). We provide NACE-qualified materials with documented hardness verification. Full traceability from mill heat through finished valve body.

Q: ISO 5211 actuator mounting?

ISO 5211 standardizes pneumatic/electric actuator mounting to valve body. Bolt patterns F03 through F35 depending on valve size. Drive shafts with standardized keying. We machine ISO 5211 mounting as standard option on ball valves and butterfly valves. Customer-supplied actuator can be mounted for turnkey valve assembly.

Q: Seat geometry precision?

Ball valve seat: machined for specific seal interference with ball. Typical tolerance ±0.025 mm on seat bore. Surface finish Ra 0.8 µm for proper seal. For high-pressure applications, precision seat preparation is critical. We maintain seat manufacturing processes that ensure consistent valve performance — no leak issues from manufacturing variation.

Q: Lead times for custom valve bodies?

Prototype custom valve bodies: 3-5 weeks. Production qualified valves (with pressure test and documentation): 5-8 weeks. Oil & gas qualified with NACE testing: 8-12 weeks. Complete valve assembly with actuator integration: 8-16 weeks. For repeat production orders, 4-6 weeks from PO typical.

CNC machining of valve bodies across industries: hydraulic valves, pneumatic valves, process valves. Ductile iron, 316L stainless, Monel K-500, Inconel 625 for aggressive service. NACE MR0175 compliance for oil and gas sour service. Pressure tested.

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Fluid, valve & pressureWuxi, ChinaMOQ 1 partDFM review included

Technical plate for Ball valves. Control valves. Pressure rated.

How we run it

CNC for valve bodies

Different valve types serve different functions and require different machining approaches. Here's what we build most often.

3-7 daysTypical lead time

MOQ 1No minimum quantity

<4 hQuote response

ISO 9001Quality system

01 · Valve types

Valve body categories.

Ball valves

Full port and reduced port ball valve bodies. ISO 5211 actuator mounting. Trunnion or floating ball design.

Gate valves

Gate valve bodies for on/off service. Flanged (ANSI B16.5) or threaded connections.

Check valves

Swing check, lift check, wafer check. Pilot-operated for hydraulic systems.

Control valves

Globe valve bodies for throttling/control service. Precision seat geometry.

Butterfly valves

Wafer and lug-style butterfly valve bodies. Resilient seat or metal seat.

Needle valves

Fine-throttling valves for instrumentation and fluid control.

Diaphragm valves

Diaphragm-actuated valves for clean/aseptic service. Pharmaceutical, food.

Pressure relief

Safety/pressure relief valve bodies. ASME Section VIII code compliant design.

Choke valves

Oil & gas production choke valves. Erosion-resistant materials for sand-laden service.

Different valve types serve different functions and require different machining approaches. Here's what we build most often.

02 · Valve customers

Valve customers we serve.

Hydraulic system OEMs

Industrial hydraulic valve manufacturers — directional control, pressure, flow

Process industries

Chemical, pharmaceutical, food & beverage process valve manufacturers

Oil & gas

Upstream (drilling), midstream (pipeline), downstream (refining) valve components

Power generation

Power plant steam, water, gas valves — ASME code compliance

Water treatment

Municipal and industrial water treatment plant valves

Marine & offshore

Ship systems, offshore platform fluid systems

Semiconductor fab

Semiconductor process chemistry valves, gas delivery valves

Pneumatic OEMs

Industrial pneumatic valve manufacturers — solenoid, pilot-operated

Fire protection

Fire sprinkler system valves, pressure relief hardware

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FAQ

Ball valves — questions

Material selection for valve bodies?

General industrial: ductile iron (cost-effective, adequate). General process: 316L stainless. Marine/saltwater: Monel K-500. Oil & gas sour service: Inconel 625 or duplex 2205/2507. High temperature: Inconel 718 or 625. Aggressive chemistry: Hastelloy C-276 or Monel 400. Material selection is critical — specify based on fluid, temperature, pressure, and sour-service requirements.

Pressure testing capability?

Hydrostatic pressure test to 1.5× rated pressure for 10 minutes (industrial standard per API 598). Helium leak detection for critical valves. Witnessed testing with customer or third-party inspection available. Documentation package includes: test pressure, duration, leak rate (if measured), pass/fail. For fire-safe valves per API 607, additional fire test at qualified lab.

NACE compliance for oil & gas?

NACE MR0175/ISO 15156 governs materials for sour (H2S) service. Specific hardness limits: typically <22 HRC for wetted surfaces on pressure-containing parts. Material selection restricted (no free-machining grades). We provide NACE-qualified materials with documented hardness verification. Full traceability from mill heat through finished valve body.

ISO 5211 actuator mounting?

ISO 5211 standardizes pneumatic/electric actuator mounting to valve body. Bolt patterns F03 through F35 depending on valve size. Drive shafts with standardized keying. We machine ISO 5211 mounting as standard option on ball valves and butterfly valves. Customer-supplied actuator can be mounted for turnkey valve assembly.

Seat geometry precision?

Ball valve seat: machined for specific seal interference with ball. Typical tolerance ±0.025 mm on seat bore. Surface finish Ra 0.8 µm for proper seal. For high-pressure applications, precision seat preparation is critical. We maintain seat manufacturing processes that ensure consistent valve performance — no leak issues from manufacturing variation.

Lead times for custom valve bodies?

Prototype custom valve bodies: 3-5 weeks. Production qualified valves (with pressure test and documentation): 5-8 weeks. Oil & gas qualified with NACE testing: 8-12 weeks. Complete valve assembly with actuator integration: 8-16 weeks. For repeat production orders, 4-6 weeks from PO typical.

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