Combined Type Vent Valve

PN10-PN16 
DN15~ DN300
Iron, Ductile Iron

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Product information

Combined type vent valve is one important unit in the piping system, which is normally mounted on the top of the pipe or pipe air holding place to discharge the air in the pipe, making sure the pipe work normally. Flowspec combined type vent valve can remove the air existed in the pipe more smoothly, proventing of the pressure fluctuation or other damages in the piping system. It can discharge or suck the air out of or into the pipe quickly. At the same time, this air vent valve can protect it automatically more reliable.

1. FEATURES
  • Discharge air more smoothly
  • More automatic
  • More reliable discharge
  • Safer self-protection 
  • Long service life
3. STANDARDS
  • Design & Manufacturing: CJ / T 217
  • Face to face: GB/T 7927
  • Flanged ends: GB / T 17241.6, GB / T 9113, ASME B16.1 / B16.5, DIN2532-2534, DIN2542-2544
  • Inspection & testing: GB / T 13927, API 598
  • Quality assurance: ISO 90001
2. TECHNICAL SPECIFICATIONS
  • Nominal pressure: ANSI 125 / 150LB, PN1.0 / PN1.6MPa
  • Size: 1/2 “~ 12” (15 ~ 300mm)
  • Materials: cast iron, ductile iron
4. APPLICATIONS
  • Applicable medium: water, sewage, sea water
  • Applicable temperature: 0 ℃ ~ + 80 ℃ (higher temperature is available upon request)
  • Typical application:
    1.Water projects
    2.High buildings
    3.Water treatment industry
    4.Power plant
    5.Chemical industry

Why Choose Flowspec Luokai

45+ Years Experience

Founded in 1978, manufacturing industrial valves for over four decades with proven reliability worldwide.

Global Certifications

ISO 9001, CE/PED, WRAS, FM, UL, API approved — compliant with international quality and safety standards.

OEM Custom Solutions

Flexible design and manufacturing per your specifications — material, size, pressure, actuation tailored to project needs.

Worldwide Delivery

Exported to 5 continents — North & South America, Europe, Middle East, Southeast Asia, and Africa.

Our Service Promise

Strict Quality Control

Every valve tested to API 598, EN 12266 before shipment

Timely Global Delivery

Reliable logistics to 5 continents with secure packaging

OEM & Custom Design

Tailored material, size, pressure and actuation to your specs

Dedicated After-Sales

Technical support and service throughout product lifecycle

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contactOr give us a email at

sales@lokvalve.com