Ball Valve Block 500 Bar CNC Machining Parts Stainless Steel Three Way Diverter Lapped Seats
Ball Valve Block 500 Bar CNC Machining Parts Stainless Steel Three Way Diverter Lapped Seats
Place of Origin:Dongguan, Guangdong, China
Brand Name:Changxinda
Certification:ISO 9001:2015
Model Number:CXDC-BV3-500
Minimum Order Quantity:1 Piece (prototype) / 30 Pieces (serial)
Price:USD 45 - 260 / Piece
Standard Packaging:Port caps fitted, individual VCI bag, foam-separated export carton, pressure test certificate inside
Delivery Time:6-8 working days for prototypes, 15-20 days for serial orders
Payment Terms:T/T
Supply Ability:8000 Pieces per Month
Product Details
Highlight:
500 Bar Ball Valve Block
,Lapped Ball Seats
,ISO 5211 Actuator Pad
Material:
316L Stainless Steel (1.4404), Optional 304, Duplex 2205, 316Ti
Structure:
Three Way Ball Valve Block, L-port Or T-port, Floating Or Trunnion Ball
Ball Seats:
PTFE / PEEK / Metal Hard Seal, Lapped To 90% Contact
Working Pressure:
500 Bar Standard Version, 350 Bar Economy Version
Proof Test:
750 Bar (1.5x) Piece By Piece, Leak-down Recorded
Stem Bore:
Coaxial With Ball Bore Within 0.01 Mm
Actuator Interface:
ISO 5211 F03/F04/F05/F07 Square Drive With Bolt Holes
Port Types:
G1/4, G3/8, G1/2, M14x1.5, SAE J1926, 1/4-3/4 NPT
Surface Treatment:
Passivation ASTM A967, Optional Bead Blast / Electropolish
Inspection:
CMM, 2.5D Vision, Thread Gauges, Bore Scope, Hydrostatic Test Bench
Quality Document:
Pressure Test Certificate, Dimensional Report, Material Certificate 3.1
Customization:
Schematic Or Sample Based, Pressure Class Matched Wall Thickness
Confidentiality:
NDA Signed, Coded Part Numbers, Isolated Machining Cell
Lead Time:
6-8 Days Prototype, 15-20 Days Serial
MOQ:
1 Piece Prototype
Product Description
Detailed Specifications & Features
500 Bar · Lapped Ball Seats · ISO 5211
500 Bar Ball Valve Block — Three Way Body with Lapped Seats and Actuator Pad
A high pressure ball valve block fails in only three ways: ball seat leakage, stem blow-out and body rupture. These three are governed respectively by ball seat lapping quality, stem bore coaxiality, and wall thickness plus pressure test verification. This product works backwards from those three: every ball seat is lapped and blue-mark checked, stem bore to ball bore coaxiality is held at 0.01 mm, and the body is pressure tested at 525 bar with records kept.
Three Failure Modes, Three Matching Processes
Many suppliers can turn the shape, but the part leaks on a 500 bar test bench. The cause is usually not dimensions but these three things:
| Failure 1: Ball seat leakage | Uneven ball seat contact band width with chatter marks on the surface → Ball seat lapping plus blue marking contact band check, contact band width held at 0.8-1.2 mm with over 90% contact ratio |
| Failure 2: Stem blow-out | Stem bore not coaxial with the ball bore, seal groove eccentric → Coaxial machining in one setup, coaxiality 0.01 mm, seal groove bottom diameter ±0.02 mm |
| Failure 3: Body rupture | Insufficient wall thickness at intersecting cross holes, internal defects → DFM wall thickness check, ultrasonic testing on thick stock and 1.5 times pressure hold, archived piece by piece |
Product Specifications
| Material | 316L stainless steel (1.4404), optional 304, 2205 duplex, 316Ti |
| Structure | Three-way ball valve block, L-port / T-port, floating or trunnion ball design |
| Ball seat | PTFE / PEEK / metal hard seal, lapped to over 90% contact ratio |
| Working pressure | 500 bar (350 bar standard), burst pressure ≥ 4 times working pressure |
| Pressure hold testing | Pressure held at 1.5 times working pressure (750 bar) on every part, with records archived |
| Stem bore | Coaxial with the ball bore within 0.01 mm, seal groove bottom diameter ±0.02 mm |
| Actuator Interface | ISO 5211 F03/F04/F05/F07 square drive plus bolt holes, optional manual handle |
| Ports | G1/4,G3/8,G1/2,M14x1.5,SAE J1926,1/4-3/4 NPT |
| Surface | ASTM A967 passivation, optional bead blasting, electropolishing |
| MOQ / Lead Time | Sampling from 1 piece; volume from 30 pieces; 6-8 working days for samples, 15-20 days for production |
Manufacturing Flow: From Bar Stock to Pressure Test
| Operation 1 | DFM and Wall Thickness Verification Minimum wall thickness at intersecting cross holes is back-calculated from working pressure and no-drill zones are marked; actuator mounting faces and pipe interference are checked at the same time. Quotation and DFM feedback within 24 hours. |
| Operation 2 | Material and Flaw Detection 316L plate is received by heat number, thick sections are ultrasonically tested to exclude internal defects, with a 3.1 material certificate. |
| Operation 3 | Turn datum and rough machine the ball bore Turn face and OD, rough bore the ball bore with 0.3 mm allowance, establishing the rotational datum. |
| Operation 4 | Finishing in one setup Ball bore, stem bore, seal grooves and actuator mounting face all finished from one datum, holding 0.01 mm coaxiality. |
| Operation 5 | Ports and mounting holes Three-way port drilling and tapping, O-ring counterbores, ISO 5211 square drive and bolt holes all machined complete in one pass. |
| Operation 6 | Ball seat lapping Ball seat lapped against the mating ball and checked with blue marking: band width 0.8-1.2 mm, contact ratio above 90%, lapped again if out of spec; hand polishing to fit is not accepted. |
| Operation 7 | Cleaning and Passivation Ultrasonic cavity cleaning → ASTM A967 passivation → DI water rinse → oil-free compressed air drying, with borescope inspection of the cavity. |
| Operation 8 | Assembly and Torque Records Ball, seat, stem and O-rings assembled and torque-tightened to the set value with records; actuator adapter flange optional. |
| Operation 9 | Pressure Hold and Leak Testing Held at 1.5 times working pressure with each port direction tested separately; leak rate recorded and a test certificate shipped with the goods. |
Precision Control and Inspection Frequency
The control values and inspection frequencies below are not sampling slogans; they are the actual data items in the report shipped with every batch.
| Ball bore roundness / cylindricity | 0.005 / 0.008 mm | CMM, first article plus every 20 pieces sampling |
| Stem bore coaxiality | 0.01 mm | CMM, first article plus batch sampling |
| Ball seat contact ratio | ≥ 90% with 0.8-1.2 mm band width | Blue marking inspection, 100% full check |
| Seal groove bottom diameter | ±0.02 mm | Vision measuring machine, 100% full inspection |
| Thread | Go/no-go gauge pass | 100% full inspection |
| Pressure hold leak test | Held at 750 bar with no leakage | 100% piece by piece, records archived |
| Surface roughness | Sealing face Ra 0.4-0.8 | Surface roughness tester, sampling |
Custom and High Pressure Options
High pressure valve blocks are almost never standard parts. We customize the structure to your hydraulic schematic or sample and give manufacturability feedback before quoting.
- Structure — 2-way, 3-way, 4-way, L/T patterns, floating or trunnion ball, any port angle.
- Pressure Rating — from 100 bar to 700 bar, with wall thickness and material matched to the rating.
- Actuation Method — manual, electric or pneumatic actuation, with the ISO 5211 mounting face matched to the actual actuator.
- Sealing Design — PTFE, PEEK or metal hard seals, selected by media and temperature.
- Quantity — from a single unit for bench trials to 30 to 5,000 pieces for production lines.
How Confidentiality Requirements Are Enforced
Confidentiality is a clause we can sign, not a verbal promise. An NDA can be signed before the first drawing of a custom part is opened.
- NDA First — mutual NDA plus non-circumvention terms; files are transferred only after signing.
- Physical Isolation — confidential projects run in an isolated machining area with access control; non-project staff are not admitted.
- Zero Leakage — drawings, part photos and brand marks never appear in samples, catalogs, the website or social media.
- Data Control — CAD files are stored on an access-controlled server in per-project folders and can be destroyed on request after delivery.
- Codified Production — traveler cards, labels and packing lists can carry internal codes instead of your part numbers.
- Silent Supply Chain — subcontract stages see only internal codes, never the drawing title block or brand.
Factory Capability — Dongguan Changxinda Precision Technology Co., Ltd.
2008Founded in Dongguan, 90-102 staffStaff, 200+ Customers, export share 50-60%, annual sales of USD 10-20 million, ISO 9001:2015.
| Machining Equipment | 4-axis / 5-axis vertical machining centers · turn-mill centers · CNC lathes · surface grinders · wire EDM |
| Inspection Equipment | CMM · 2.5D vision measuring machine · roughness tester · hardness tester · air and hydraulic pressure test bench |
| Engineering Support | A dedicated project engineer follows your order one to one from RFQ to shipment, communicating in English |
| Typical Customers | OEMs and integrators in medical devices, semiconductor vacuum, automotive, robotics and instrumentation |
Industries Served (10 Categories)
| 01 Consumer Electronics | Phone, tablet and laptop housings · heat sinks · camera brackets · VR/AR headset structural parts · smart wearable housings Phone, tablet, laptop housings, heat sinks, camera brackets, VR/AR headset frames, wearable shells |
| 02 Automation & Industrial Equipment | Automation jigs · fixtures · module frames · transmission sliders · motor mounts · sensor housings · conveyor line components Fixtures, jigs, module frames, transmission sliders, motor mounts, sensor housings, line components |
| 03 Semiconductor & Vacuum Equipment | Vacuum chambers · vacuum fittings · semiconductor equipment precision bases · thermal insulation parts · inspection fixtures Vacuum chambers, vacuum fittings, precision bases, insulating parts, inspection tooling |
| 04 Medical Devices | Surgical instrument bases · medical device housings · endoscope components · aesthetic equipment structural parts (medical grade aluminum/stainless steel) Surgical bases, diagnostic housings, endoscope parts, aesthetic device frames (medical grade) |
| 05 Automotive | EV motor housings · battery end plates · sensor brackets · lamp structural parts · aftermarket parts · hydraulic valve blocks EV motor housings, battery end plates, sensor brackets, lighting parts, tuning parts, hydraulic blocks |
| 06 Aerospace & UAV | Aircraft structural parts · UAV frames · landing gear components · avionics instrument housings (lightweight precision parts) Aircraft structures, UAV airframes, landing gear fittings, avionics housings |
| 07 Optics & Photonics | Optical lens barrels · lens mounts · light source heat sinks · camera module brackets · inspection optical stages Lens barrels, lens mounts, light source seats, camera module brackets, optical platforms |
| 08 Telecommunications | 5G heat sink cavities · filter housings · signal adapter brackets · telecom equipment enclosures 5G heat sink cavities, filter parts, signal transition hardware, telecom housings |
| 09 Robotics | Robotic arm joint parts · robot bases · reducer housings · AGV chassis structural parts Robot joint parts, robot bases, reducer housings, AGV structural parts |
| 10 Instruments & Meters | Inspection equipment housings · precision gauge bases · flow meter parts · laboratory equipment components Test equipment housings, gauge bases, flow meter parts, lab equipment accessories |
Delivery and Logistics Assurance
- Scheduling Mechanism — machine capacity is locked weekly, with rush and volume orders scheduled on separate lines.
- Cycle time — two shifts 07:30-22:00, six days a week, with weekend shifts added in peak season.
- Inventory — semi-finished buffer stock for repeat models shortens repeat order lead time.
- Visual — weekly production schedule and shop floor photos, with problems reported in advance rather than explained afterwards.
- Shipping — samples by express in 3-5 days, volume by air or sea, EXW / FOB Shenzhen / CIF.
For high pressure valve blocks, send the drawings first
Send STEP / IGES / DWG / PDF drawings and our engineering team replies with DFM feedback (machinability, tolerance, cost optimization) and a firm quotation within 24 hours.
Dongguan Changxinda Precision Technology Co., Ltd. · Since 2008 · ISO 9001:2015
Keywords: cnc machining parts, high pressure ball valve block, 3-way valve block machining, ball seat lapping, ISO 5211 valve block, custom precision machining
Message for quick reply
Related Products
Flange Connector Housing Turn-Mill Machined Complex Layered Internal Cavity 0.01mm
Turn-mill CNC aluminum flange connector housing with complex layered internal cavity, multi-hole structure, and square flange base. Single-setup machining eliminates secondary clamping errors, ensuring ±0.01mm precision and high batch consistency. Ideal for aviation and industrial connector applications with custom material and surface treatment options.
Aviation Aluminum Connector Housing Turn-Mill Machined Multi-Step Internal Cavity
Turn-mill CNC aviation-grade aluminum connector housing with multi-step internal cavity, precision internal/external threads, locating holes, snap-fit slot, and hex wrench flats. Single-setup production ensures perfect alignment. ISO 9001 certified with aviation-grade materials and surface treatments for aerospace applications.
Aluminum Multi-Step Locating Flange Housing Threaded Connector Machining 0.01mm
Turn-mill CNC aluminum connector housing with multi-step threads, locating flange, and snap-fit end. One-piece construction ensures perfect concentricity, eliminates assembly joints, and provides reliable performance for industrial connector systems. ISO 9001 certified with ZEISS CMM inspection.
Anti-Rotation Connector Housing Turn Mill Machining Multi-Position Sealing Thread
Turn-mill CNC aluminum connector housing with multi-position anti-rotation tabs, sealing threads, and locating flange. Single-setup production ensures perfect alignment, ±0.01mm accuracy, and ISO 9001 certified quality. Custom configurations available for industrial connector systems and fluid couplings.
