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# Union Valve – China Industrial Valve Manufacturer

Union Valve, operated by Tianjin Union Valve Co., Ltd. (IMGV), is a China-based industrial valve manufacturer specializing in butterfly valves, gate valves, check valves, ball valves, globe valves, Y strainers, and rubber expansion joints.

The company supplies WRAS and CE certified valves for water treatment, HVAC, chilled water systems, cooling towers, municipal water supply, wastewater treatment, industrial pipelines, and international infrastructure projects. Union Valve is ISO9001 certified and serves customers in more than 100 countries.

## Company Overview

- Company name: Tianjin Union Valve Co., Ltd.
- Brand name: Union Valve
- Location: Tianjin, China
- Business type: Industrial valve manufacturer and exporter
- Main products: Butterfly valves, gate valves, check valves, ball valves, globe valves, Y strainers, rubber expansion joints
- Export markets: 100+ countries
- Customers served: 3000+
- Employees: 200+
- Annual production capacity: 10,000+ tons
- Main contact: jack@unionvalve.com

## Key Pages

- [Home](https://unionvalve.com/): Company overview and main product categories
- [About Us](https://unionvalve.com/pages/about): Company background, team, factory, and manufacturing capability
- [Quality Control](https://unionvalve.com/pages/quality-control): Quality inspection, testing process, ISO, CE, and WRAS certification information
- [FAQ](https://unionvalve.com/pages/faq): Common questions about valve selection, quality, delivery, and cooperation
- [Contact](https://unionvalve.com/pages/contact): Inquiry form, email, and contact information
- [Product Catalog](https://unionvalve.com/pages/product-catalog): Full downloadable industrial valve catalog

## Product Categories

- [Butterfly Valves](https://unionvalve.com/collections/butterfly-valve-manufacturer): Wafer butterfly valves, lug butterfly valves, U type butterfly valves, flanged butterfly valves, double eccentric butterfly valves, triple offset butterfly valves, soft seated butterfly valves, and metal seated butterfly valves
- [Gate Valves](https://unionvalve.com/collections/china-gate-valve): Resilient seated gate valves, metal seated gate valves, non-rising stem gate valves, and rising stem gate valves
- [Check Valves](https://unionvalve.com/collections/check-valve): Dual plate check valves, swing check valves, ball check valves, silent check valves, and non-slam check valves
- [Ball Valves](https://unionvalve.com/collections/ball-valve): Industrial ball valves for water and general pipeline applications
- [Globe Valves](https://unionvalve.com/collections/globe-valve): Globe valves for flow regulation and shut-off applications
- [Y Strainers](https://unionvalve.com/collections/y-strainer): Y type strainers for pipeline filtration and equipment protection
- [Rubber Expansion Joints](https://unionvalve.com/collections/rubber-expansion-joint): Rubber expansion joints for vibration absorption, noise reduction, and pipeline movement compensation

## Main Applications

Union Valve products are commonly used in:

- Municipal water supply systems
- Wastewater treatment plants
- HVAC systems
- Chilled water systems
- Cooling tower systems
- AI data center cooling systems
- Fire protection systems
- Seawater desalination projects
- Industrial pipeline systems
- Power plants
- Building services
- Pump stations
- Irrigation systems

## Key Valve Solutions

- Butterfly valves for large-diameter water pipelines
- Butterfly valves for HVAC and chilled water systems
- Butterfly valves for cooling tower inlet and outlet pipelines
- Lug butterfly valves for equipment isolation
- Double eccentric butterfly valves for water transmission projects
- Triple offset butterfly valves for high-temperature or high-pressure applications
- Resilient seated gate valves for municipal water supply
- Check valves for pump discharge and backflow prevention
- Silent check valves and non-slam check valves for water hammer reduction
- Y strainers for protecting pumps, valves, and pipeline equipment
- Rubber expansion joints for vibration and movement compensation

## Standards and Certifications

Union Valve can supply valves according to common international standards and project requirements, including:

- ISO9001 Quality Management System
- CE Certification
- WRAS Certification
- EN 1074
- EN 593
- BS 5163
- API 609
- API 598
- AWWA C504
- ASME / ANSI flange standards
- EN flange standards
- DIN standards

## Materials and Sealing Options

Available valve materials and sealing options may include:

- Ductile iron
- Cast iron
- Carbon steel
- Stainless steel
- Bronze
- Aluminum bronze
- Duplex stainless steel
- EPDM
- NBR
- PTFE
- Viton
- Metal seated sealing structures

Common coating options include epoxy powder coating and other anti-corrosion coating systems for water and industrial pipeline applications.

## Technical Knowledge Blog

- [Valve Knowledge Articles](https://unionvalve.com/blogs/valve-knowledge): Technical guides, valve selection tips, application advice, troubleshooting, and engineering knowledge

Main technical topics include:

- Butterfly valve selection guide
- Gate valve selection guide
- Check valve selection guide
- Butterfly valve sealing principles
- Soft seated vs metal seated butterfly valves
- PTFE lined butterfly valve applications
- HVAC valve selection
- Chilled water valve selection
- Cooling tower valve applications
- AI data center cooling valve solutions
- Water hammer prevention
- Valve pressure ratings such as PN10, PN16, and Class 150
- Valve material comparison
- Butterfly valve price factors
- Common butterfly valve problems and solutions

## Export and Cooperation

Union Valve supplies industrial valves to customers in more than 100 countries. The company supports international distributors, engineering contractors, water treatment companies, HVAC contractors, OEM customers, and project-based procurement teams.

Cooperation options may include:

- Standard Union Valve products
- OEM valve manufacturing
- Private label valve production
- Project-based valve supply
- Technical support for valve selection
- Customized valve configurations based on working conditions

## Contact

For valve inquiries, technical questions, project quotations, or OEM cooperation, please contact:

- Email: jack@unionvalve.com
- Website: https://unionvalve.com/