Company Profile · OEM / ODM Manufacturer
ValveWormGear is a dedicated industrial valve gear operator manufacturer with more than twenty years of engineering and export experience. We combine in-house CNC machining, worm and bevel gear production, heavy-duty gearbox assembly and 100% torque testing under one ISO 9001 quality system — supporting OEM, ODM and EPC programs shipped to over 80 countries worldwide.
Who We Are
Founded in the valve manufacturing cluster of Wenzhou, China, ValveWormGear has grown from a regional machine shop into an export-focused valve gear operator factory serving valve OEMs, distributors and EPC contractors on six continents.
Core production covers quarter-turn worm gear operators for ball, butterfly and plug valves; multi-turn bevel gearboxes for gate and globe service; declutchable manual overrides; and actuator mounting adapters to ISO 5211 / ISO 5210. Application engineers work alongside production planners so every catalog size and OEM variant is backed by torque calculations, material selections and flange interface drawings before metal is cut.
More than sixty percent of annual output ships under customer brands through OEM and private-label programs protected by NDA. Whether you need five sample units for qualification or five hundred operators for a trunkline upgrade, our production system scales with documented quality records, calibrated torque benches and export-ready packaging.
Two decades of continuous investment in CNC capacity, gear hobbing lines and assembly discipline. Senior machinists, heat-treat technicians and QA inspectors understand worm set contact patterns and stem interface tolerances.
Gear operators for water treatment, oil and gas, power, mining, marine and chemical processing — with materials and coatings matched to each process environment.
Quality is engineered into the process — incoming material verification, in-process gauging and 100% torque testing with CoC per lot. STEP, SolidWorks and submittal packages issued before fabrication.
Capabilities
Vertically integrated production keeps lead times predictable and quality traceable. From ductile iron and steel machining through gear cutting, assembly, surface treatment and final torque verification, critical steps remain under our roof and our ISO 9001 documented procedures.
CNC machining centers handle housings, covers, flanges and stem nuts with repeatable tolerances for ISO 5211 interfaces. Dedicated worm and bevel gear lines cut hardened drive components matched to ratio tables validated in our test lab. Engineering support includes DFM review, FEA on high-torque housings and prototype builds in six to eight weeks.
Factory Tour
Our 8,000 square metre campus in Yongjia, Wenzhou integrates machining halls, gear cutting workshops, assembly lines, torque test stations and export warehousing. Visitors and third-party auditors routinely witness machining capability, assembly discipline and bench testing procedures.
CNC workshops organized by component family — housings, covers, flanges and stems — with tool presetting and SPC sampling on critical bores. Climate-controlled gear blank storage before hobbing and hardening.
Torque-sequence documentation for bearing preload and seal installation. Each unit receives a unique lot marker linking machining records, gear pair IDs and calibrated dynamometer test results.
Climate-managed warehousing with SKU labeling aligned to customer ERP codes. Fumigation-compliant crates, VCI protection and FOB / CIF / DDP logistics supported.
Equipment
Capital investment in machining, gear cutting, metrology and surface treatment equipment ensures we hold tight tolerances on flange interfaces, stem bores and gear contact patterns — the parameters that determine whether a valve gear operator performs reliably after years in service.
CNC machining centers form the backbone of housing production. Gear hobbing and grinding machines cut worm and bevel sets matched to engineered ratio tables. CMM and optical inspection tools close the loop on dimensional compliance for ISO flange interfaces.
Quality Assurance
Our quality management system is certified to ISO 9001 and applied to every production lot — from incoming material certificates through machining, assembly, torque testing and pre-shipment audit.
Castings, forgings, bearings and seals arrive with mill certificates checked against drawing specifications. Chemical composition, hardness and dimensional sampling recorded before machining.
In-process gauges monitor flange bolt circles and stem bores. Every unit is cycled on torque benches — test logs linked to lot numbers and CoC packages.
Paint thickness, nameplate data, handwheel operation and packaging integrity verified. Export reconciliation with photo documentation for customs and client QA.
Compliance
Global projects require more than a quality claim — they require evidence. We maintain certifications and documentation packages that support valve OEM listings, EPC vendor approval and end-user audits across Europe, North America, the Middle East and Asia-Pacific.
ISO 9001 governs our management system from design transfer through production and corrective action. CE marking and PED-related documentation support European destinations. Material certificates, torque test reports and calibration records accompany export shipments.
Certified QMS covering design, production, inspection and corrective action.
Documentation for EU project submittals and Notified Body inquiries.
Pipeline valve project compliance mapped to production and inspection plans.
Mill test reports traceable to heat and lot numbers on request.
Global Reach
Export is core to our business — not an occasional sideline. We have supplied valve gear operators to utilities, EPC contractors, valve OEMs and industrial distributors in more than eighty countries, adapting documentation, packaging and technical support to regional expectations.
Water networks in the Middle East, oil and gas trunklines, UAE desalination and Southeast Asia hydropower — with milestone schedules, witness points and split shipments.
Valve manufacturers expand their gear operator range without capital investment. Custom nameplates, paint systems and forecast-based capacity reservation under NDA.
FOB, CIF and DDP deliveries with experienced freight forwarders. Application engineers support commissioning and spare-part identification years after supply.
Why ValveWormGear
Procurement teams and application engineers select ValveWormGear when they need a manufacturing partner — not a trading desk — who can prove torque capability, scale production and support export documentation without delays.
CNC machining and gear cutting under one roof with documented tolerances for ISO flange interfaces.
Multi-stage bevel designs rated to extreme output torques for gates, penstocks and large valves.
Private-label programs with NDA protection, custom nameplates and forecast-based capacity.
EPC and utility references across 80+ countries with compliant export documentation.
Application sizing, CAD models and installation guidance from qualified engineers.
12,000+ units per year with modular tooling for catalog and OEM variants.
ISO 9001 QMS with 100% torque testing and traceable lot records.
Submittal packages, CoC, material certs and witness-test coordination.
FAQ
ValveWormGear is a manufacturer. We operate our own factory in Yongjia, Wenzhou with in-house CNC machining, gear cutting, assembly and torque testing. We do not buy finished gear operators from third parties for resale. Facility tours, production photos and witness inspections are available for qualified buyers and auditors.
Yes. OEM and ODM programs represent a majority of our output. We manufacture under customer brands with custom nameplates, paint, ratios, stem interfaces and packaging. Drawings and IP are protected under NDA. First-article units are torque-tested and documented before series release; MOQ and lead time depend on model complexity.
We supply worm gear operators and bevel gearboxes for water treatment, oil and gas, power generation, mining, marine and offshore, chemical processing, industrial automation and hydropower. Materials and coatings are selected per process environment — from municipal chlorinated water to abrasive slurry and offshore salt spray.
Yes. We export to more than eighty countries with experience in EPC documentation, split shipments and third-party inspection. Commercial terms include FOB, CIF and DDP. Our logistics team prepares packing lists, certificates of origin and test summaries aligned to customs and client QA requirements.
Application engineers issue STEP, IGES and SolidWorks models, installation drawings, torque curves and datasheets — typically within 24–48 hours of confirmed requirements. Submittal packages for EPC bids include material certificates, test procedures and compliance statements as specified in your inquiry.
Contact our factory team for OEM program discussions, technical sizing, CAD submittals or a formal quotation. We support single-sample qualification, volume EPC lots and long-term supply agreements with engineering continuity from first inquiry through aftermarket spares.
