Home » Products »

Pressure Vacuum Vent

  • Price:


  • minimum:

  • Total supply:

  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:


  • Validity to:

    Long-term effective

  • Last update:

    2019-11-04 22:00

  • Browse the number:


Send an inquiries

Company Profile

Zhejiang Zhengchao Petrochemical Machinery Co., Ltd.

By certification [File Integrity]

Contact: cnzcpe888(Mr.)  




Area: Zhejiang

Address: Zhejiang

Website: http://www.zjzcpe.net/ http://cnzcpe888.oupujc.com/

Product details


Quick Details

Place of Origin: Zhejiang, China (Mainland)

Brand Name: Zhenchao

Model Number: PRV-A

Application: Storage tank

Material: CS, Alumium, 304,316L

Temperature of Media: Low Temperature

Pressure: Low Pressure

Power: Gravity

Media: Oil

Port Size: 2"-12"

Structure: Composite

Explosion proof type: IIA / IIB / IIC

Standard or Nonstandard: Standard

Supply Ability: 1000 Set/Sets per Month

Packaging & Delivery

Packaging Details: Plywood case

Port: shanghai

Lead Time: 30day

Product Description

Zhenchao Breather valve with flame arrester

Model PRV-A is designed to vent to atmosphere to protect your tank from damage created by over-pressure or excessive vacuum.As well as providing the primary layer of protection for tanks and process systems, pressure/vacuum valves also minimise emission losses of gases or vapours, thus protecting the environment and providing significant financial savings.

Technology Parameter

Operating pressure:

Type A: +355pa (+36mm H2O) -295pa (-30mm H2O)

Type B: +980pa (+100mm H2O) -295pa (-30mm H2O)

Type C: +1950pa (+200mm H2O) -295pa (-30mm H2O)

Type D: according to user requirement (special pressure rating)

Parts Name



CS / AL / 304 / 316

Pressure Pallet

304 / 316

Vacuum Pallet

304 / 316

Bolt & Nut

CS / 304 / 316


PTFE / Nitrile

Note: under normal circumstances, (fire) breathing valve operating pressure to B shall prevail;

Applicable materials: gasoline, kerosene, diesel, aromatics, sulfur, air and other petrochemical materials;

Environment temperature: -40 °C -+60 °C;

Shell material: HT, AL, A3, 18-8, 304, 304L, 316, 316L;

Flange standards: ANSI 150LB (also can be produced according to user specified criteria)

Company Information

Zhenchao,  founded in year 1998,  is a professional manufacturer serving in the industry of pressure vessels protection. Our high quality products, such as pressure vacuum relief valves, gauge hatches, emergency pressure relief vents, flame arrestors and detonation flame arrestors would always work well to protect the equipment of loading terminals and storage tanks with their features of reliability and safety in the industries of chemical/petrochemical, pharmaceutical, landfill, wastewater, refining,  pulp and paper processing, oil production and etc.

As being certified by ISO 9001:2008, Zhenchao could ensure its customers that we would have a high level controlling on all our activities, including valve designing , product engineering, product manufacturing, marketing and so on.

Moreover, a systematic management system has been developed by Zhenchao. With this system covering our product manufacturing, technology improving, product quality controlling, it makes people of Zhenhao work more efficiently and develop safer products for global vessel protection industry.