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Product Category
Multi-Standard · ≤0.005mm · Ra 0.8µm · 1.5× Tested
PVA / 001 — 008

CNC Machined
Pump-Valve Interface Adapters

Custom CNC machined pump-valve interface adapters and transition fittings — multi-port sealing faces Ra 0.8 µm, port concentricity ≤ 0.005 mm, KF/CF/BSP/NPT on the same body, leak-tested. For semiconductor vacuum pump groups, gas panel manifolds, and vacuum system plumbing.

≤0.005mm
Port Conc.
Ra 0.8µm
Seal Face
Leak-Test
Every Adapter
Get Instant Quote → View Our Work
PART DWG · PVA-000 KF→NPT TRANSITION · SUS316L ISO 9001 · 100% LEAK-TESTED
KF Vacuum Side
Multi-Std One Body
KF40 ISO 2861 NPT 1" ANSI B1.20 VACUUM ↓ PUMP ↑ ⊙ ⌀0.005 KF to NPT KF→NPT TRANSITION · 1 BODY INTERFACE · STD STD SEAL PRESSURE KF ◀ O-ring HV ↔ atm CF Cu knife UHV NPT/BSP thread pump side VCR metal face UHP gas PORT · CONC. A ⊙ ⌀ 0.005 A port-to-port datum align ✓ 1 setup ✓ CMM LEAK TEST · SEQ BLOCK P × 1.5 MEASURE CERT BLOCK · adj ports off PRESSURE · 1.5× rated MEASURE · per port CERT · full + multi EVERY PORT INDEPENDENT MATERIAL · CLASS MATERIAL PRESS USE SUS316L ◀ UHV/HV semi vac SUS304 HV industrial Al 6061 HA MV rough vac SUS316Ti HV corrosive Brass C36000 LP low-pressure SCALE 1 : 1 · MM
Semi · Optical · Research · Med · Robot · Industry
Use Cases
SUS316L · 304 · 316Ti · Al 6061 · Brass
Materials
48hr Quote · 6-Day Proto
Service
≤0.005mm
Port Concentricity
multi-interface
Ra 0.8µm
All Sealing Faces
leak-free standard
Leak-Tested
Every Adapter
pressure certificate
6 Days
Fastest Delivery
prototype orders
Machining Challenges

Pump-Valve Interface Adapter Challenges

Pump-valve adapters must transition between different fluid system standards (e.g., KF vacuum to NPT pump port) in a compact body while maintaining leak-tight sealing at every interface.

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Multi-Standard Interface on One Body
A single adapter may have a KF vacuum flange on one face and a BSP or NPT pump port on another. All port positions and face geometries must be machined in one setup for accurate spatial relationships.
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Multi-Face Sealing Integrity
Every face must independently seal — a leak on any face means the entire system fails. HXC pressure-tests all adapters at 1.5× rated pressure with individual port block-off to verify each face independently.
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Compact Envelope
Pump-valve adapters must fit in the tight space between vacuum pump inlets and valve outlet ports. Compact body design with minimum wall sections (≥ 3 mm) is reviewed in DFM.
Our Work

Pump-Valve Interface Adapters We've Made

Real CNC machined semiconductor components — cleaned, inspected, and cleanroom-packaged.

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Pump Adapters — Batch
Capabilities & Tolerances

What We Can Deliver

Typical specifications — confirm exact requirements at enquiry.

Port concentricity≤ 0.005 mm
Sealing face Ra0.8 µm (O-ring), 0.4 µm (CF)
Leak test1.5× rated pressure, every adapter
Interface standardsKF, CF, BSP, NPT, ISO-K, VCR
Min wall section3 mm between adjacent ports
CleaningIPA ultrasonic + cleanroom pack
MaterialsSUS316L, SUS304, Al 6061
Multi-std supportAny combination on one body
Pressure testHydrostatic or pneumatic per port
Lead time (proto)6–9 days
Lead time (batch)10–16 days
DFM checkWall section + port position review
How It Works

From Drawing to Cleanroom-Ready Part

Upload your drawing — DFM review, machining, cleaning, inspection, and cleanroom packaging within agreed lead time.

01
Upload Drawing
STEP, DXF, PDF. Include material, tolerance, and cleanliness class.
02
DFM & Quote
Free DFM review — sealing face feasibility, thin walls, deburring strategy. Quote in 48 h.
03
Machine, Clean & Inspect
CNC machining, ultrasonic clean, CMM inspection, cleanroom packaging.
04
Ship Worldwide
Full dimensional report + cleaning record enclosed. DHL / FedEx / sea freight.
Reviews

Trusted by Semiconductor Equipment Engineers

★★★★★
"Surface cleanliness and packaging met our cleanroom incoming inspection requirements immediately. Dimensional report matched our CMM check perfectly."
LW
Li Wei
Process Equipment Engineer · Taiwan
★★★★★
"HXC understood the vacuum sealing requirements for our chamber components without lengthy explanation. Lead time was exactly as quoted."
SL
Sophie L.
Equipment Design Engineer · South Korea
★★★★★
"We've sourced wafer handling and chamber parts from HXC for two years. Cleanliness, dimensional accuracy, and batch consistency are excellent."
JT
James T.
Senior Procurement · USA
FAQ

Frequently Asked Questions About Pump-Valve Interface Adapter Machining

Engineering and procurement questions answered by our semiconductor components team.

Each interface is machined as a dedicated final operation in the correct orientation. All sealing faces are fly-cut or faced after all drilling and tapping. Each port is then independently pressure-tested with adjacent ports blocked — confirming every individual interface is leak-free. Combined multi-port leak test at the full rated pressure is the final check.
HXC machines any combination: KF (ISO 2861), CF ConFlat, ISO-K/F, VCR, BSP (BSPP/BSPT), NPT, and metric ISO — all on the same adapter body. Each interface face is machined to its respective standard dimension and verified by CMM.
Minimum structural wall: 3 mm between adjacent O-ring grooves for standard working pressure (≤ 16 bar). For vacuum-rated adapters (CF flanges): minimum 8 mm between adjacent knife-edge flanges per DIN 28403. DFM review checks all wall sections before machining.
Yes — compact adapters designed around your specific installation envelope are HXC's standard service. Provide the pump outlet dimensions, valve inlet dimensions, and maximum adapter envelope, and our engineers design the most compact adapter that maintains structural integrity and correct port orientation. DFM review confirms feasibility.
For vacuum system adapters: IPA ultrasonic cleaning, N₂ purge, UV lamp inspection, cleanroom packaging. For semiconductor process gas adapters (VCR/CF interfaces): additional electropolish of gas-wetted surfaces (Ra 0.4 µm) + helium leak test + ISO Class 5 packaging.
Yes — HXC can supply pump-valve adapters with fittings, gaskets, and fasteners installed and leak-tested as a ready-to-connect assembly. All assembly components are compatible with the specified fluid and vacuum level.
Prototype: 6–9 days. Batch: 10–16 days. Complex multi-standard adapters: 8–12 days.
Standard package: (1) CMM dimensional report; (2) Pressure / leak test certificate per port; (3) Material mill certificate; (4) Cleaning record; (5) Photo set of finished parts. All documents traceable to the specific production batch.
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Send Your Drawing.
Get a Quote.

Every enquiry includes a DFM review — tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.

24hr
Quote Response
MOQ 1
Prototypes OK
ISO
9001:2015
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DFM Review on Every Enquiry
Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback — not generic pushback.
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First Article Inspection — Standard
FAI report on every new run. Material certs and surface treatment certs included with every shipment.
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Same Process: Prototype to Production
Process plan from your prototype applies to production batches. No re-qualification when you scale.
⚙
3 / 4 / 5-Axis CNC + Turning
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