Delivalvetest.com | Yongjia Deli Electromechanical Hydraulic Industry Co.

About Yongjia Deli Electromechanical Hydraulic Industry Co.

Established in 1994, Yongjia Deli specializes in the development, manufacturing, and export of advanced valve test benches, valve grinding (lapping) machines, and ball grinding machines. Our equipment is trusted globally for its precision, durability, and compliance with international testing standards.

Our valve test benches are designed to perform shell and seat pressure tests using water, air, or oil, with maximum test pressures reaching up to 210MPa for water and 76MPa (Class4500) for gas. We also support valve open-close torque testing up to 100,000 N·m.

Trusted Across Critical Industries

Our testing and grinding solutions are deployed in demanding environments where safety, accuracy, and performance are non-negotiable.

Oil & Gas Fields

High-pressure wellhead valve testing for upstream operations.

Petrochemical Plants

Compliance testing for gate, ball, globe, and check valves.

Power Stations

Reliable performance under extreme thermal and pressure cycles.

Water Supply Systems

Leak-tightness and durability testing for municipal infrastructure.

Our Product Range

Engineered for precision, durability, and compliance with API, ISO, and other international standards.

Hydraulic Valve Test Bench - YFS-Z Series

Testing Range: DN15–1000 (1/2"–40")
Medium: Water, Air, or Oil
Ideal for general-purpose valve pressure testing

Hydraulic Valve Test Bench - YFS-D Series

Testing Range: DN15–1800 (1/2"–72")
Medium: Water, Air, or Oil
High-capacity horizontal design for large valves

YFS-L Series (Vertical Type)

Testing Range: DN15–300 (1/2"–12")
Medium: Water, Air, or Oil
Space-saving vertical configuration

Hydraulic Butterfly Valve Test Bench - YFS-DL Series

Testing Range: DN50–3200 (2"–128")
Medium: Water, Air, or Oil
Optimized for butterfly and large-diameter valves

Hydraulic Safety Valve Test Bench - YFS-A Series

Testing Range: DN15–300 (1/2"–12")
Medium: Air or Nitrogen
Designed for safety relief and pressure control valves

Valve Test Benches - PZ Series (Screw Type)

Testing Range: DN15–1800 (1/2"–72")
Method: Internal sealing
Compact and efficient for workshop environments

Ball Grinding Machine - QTMJ Series

Models: QTMJ-150, QTMJ-300, QTMJ-500
Single-headed with frequency-controlled speed
Digital display for precision grinding

Custom Valve Testing Systems

Tailored to client specifications
Vertical, horizontal, and special configurations
Exported to Europe, Australia, China, and Taiwan

Why Choose Deli Valve Testing Solutions?

Precision engineering, global compliance, and unmatched reliability for critical valve testing and maintenance.

Up to 210MPa Water Test Pressure

Capable of testing super high-pressure valves used in oil wellheads and industrial systems.

Gas Test Pressure up to 76MPa (Class4500)

Safe and accurate air/nitrogen testing for safety and process valves.

Torque Testing up to 100,000 N·m

Ensures long-term operational reliability and lifespan validation.

Compliant with API598, 6A, 6D

Meets international standards for valve quality and safety certification.

1994

Founded

30+

Years of Experience

50+

Countries Served

1000+

Units Delivered

Recent News & Case Studies

Aug 02

High-quality test benches for testing super high pressure wellhead were exported to Europe

Three sets of high-quality upmarket test benches for testing super high oil wellhead valves were specially designed, manufactured, inspected, packed, loaded and transported to the National Oil Company of Belarus.

Mar 21

High-quality test benches delivered to PetroChina base in Xinjiang

Five high-quality valve test benches were specially manufactured and supplied for the PetroChina base in Xinjiang, China. Used for testing flange and weld end valves (gate, ball, globe, check) with DN15–800 and CL150–CL2500.

Oct 10

Ball grinding machines shipped to Australia

Three ball grinding machines (QTMJ-150, QTMJ-300, QTMJ-500) with adjustable speed and digital display were shipped for grinding customer’s ball valves (DN50–500).

Mar 31

Vertical valve test benches shipped to Taiwan

Three special vertical hydraulic test benches (YFS-D80, YFS-L300, YFS-L600) shipped for testing flange and weld end valves (DN15–600, PN25–PN250).

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Precision Valve Testing & Grinding Solutions