Nan’an Manufacturing Base · 24,000 sqm
A Valve Production Facility Engineered for Scale
CNC valve machining, intelligent production lines and in-house testing — delivering 3 million units annually from our mature factory foundation.
Five Controlled Stages. One Quality System. Full Traceability.
At our 24,000 m² manufacturing base in Nan’an, Fujian, every HSVA valve moves through a documented production chain — from incoming material inspection to coordinated dispatch. Each stage is verified before the product advances.
Raw Material Warehousing & Inspection
Cast iron, ductile iron, carbon steel and stainless steel billets are received, tagged by heat number and held in the incoming inspection area before release to production.
- Mill certificates verified against order specification
- Composition and hardness spot-check by in-house lab
- Non-conforming material segregated and returned
Precision CNC Machining
Across seven production lines, CNC turning and milling centers machine valve bodies, discs, stems and bonnets to the dimensional tolerances specified in each order — with in-process checks at critical operations.
- First-article inspection before batch run-off
- Dimensional records tied to heat and batch number
- Surface finish verified on sealing faces
Assembly & Fit-up
Machined components move to the clean assembly area where our experienced production team fits seats, seals, stems and actuators following standardised work instructions.
- Torque values recorded for every bolting point
- Seat alignment and stem run-out checked before test
- Assembly traceability linked to machining batch
Pressure Testing & Quality Verification
Every assembled valve is tested in our hydrostatic pressure test lab. Shell and seat tests are performed per the applicable standard, with results logged against the serial number before the valve is released.
- 100 % hydrostatic testing — no sampling skip
- Factory output pass rate maintained at 99.5 %
- Test reports and photos available for each shipment
Painting, Packaging & Dispatch
Approved valves receive surface treatment, permanent identification and protective packaging. Documents, markings and packing lists are coordinated so that every container leaves the Nan’an base ready for its destination.
- Coating thickness measured and recorded
- Tagging, nameplate and packing list cross-checked
- Annual capacity of 3 M units supports flexible scheduling
Inside the Smart Manufacturing Workshop
Watch our automated production lines, CNC machining, and pressure testing in action, all under the ISO 9001 quality system.
- Lines of code
- 979K
- Factory Area
- 24,000㎡
- Annual Capacity
- 3M units/yr
- Production Lines
- 7
- Pass Rate
- 99.5%
Every valve leaving the Nan’an manufacturing base carries measurable proof of performance.
Our in-house laboratory and staged inspection cover material traceability, dimensional accuracy, hydrostatic pressure and final acceptance — so each shipment arrives with verifiable records, not promises.
Acceptance Rate
Measured across production batches and documented per order. The remaining 0.5% is reworked, re-inspected and only released after full conformance — because an outgoing defect is never a statistic we are willing to ship.
- ISO 9001, ISO 14001 & ISO 45001 certified management system
- Production License of Special Equipment — P.R. China
- In-house testing laboratory covering pressure, material & dimension
Four verification gates before release
Each valve passes a defined sequence of controls. Records are kept at every gate and accompany the shipment.
Material Inspection
Spectrometry and mill-cert review for every cast heat, verifying chemical composition against specified material grades before machining begins.
Dimensional Detection
Coordinated measurements at critical stages ensure flange drilling, bore tolerance and assembly fit-up match drawing specifications.
Hydrostatic Testing
Shell and seat pressure tests performed on every valve per applicable standard, with recorded curves retained for traceability.
Final Acceptance
Visual inspection, marking verification, packing audit and documentation review complete the release protocol before shipment.
QUALIFICATIONS & COMPLIANCE
Certifications & Compliance
We hold internationally recognized management system certifications and comply with Chinese special equipment production license requirements, ensuring quality verification at every stage.
No.
ISO 9001:2015 Quality Management System
ISO 14001:2015 Environmental Management System
ISO 45001:2018 Occupational Health and Safety Management System
Production License of Special Equipment (People’s Republic of China)
Manufacturing Capability
Headquartered in Dongguan and supported by a 24,000 m² production base in Nan’an, Fujian, HSVA brings together precision CNC machining, intelligent assembly lines and in-house testing under one roof — built on years of valve manufacturing experience and a mature industrial foundation.
Our Nan’an facility benefits from the region’s established valve industry ecosystem — casting, forging, machining, sealing, actuators, coating, packing and logistics are all within reach. This integration allows us to move efficiently from application review and valve selection through production, pressure testing and coordinated delivery, while maintaining full traceability at every stage.
- Manufacturing Facility
- 24,000 m²
- Production Lines
- 7
- Team Members
- 100+
- Annual Capacity
- 3M Units
- Factory Pass Rate
- 99.5%
Get a Verified Quote Within 24 Hours
Built on years of manufacturing experience and a mature factory foundation. Send your specifications, and our engineers will respond with a precise proposal within 24 hours.
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