QB1(P1)-10 single-port exhaust valve_Air Exhaust Valve_Pipe Fittings_PRODUCTS_英文网站

About Us

Gansu Hongfeng Machinery Co., Ltd., located in Pingliang City, Gansu Province, is a high-tech enterprise restructured and reorganized from the large-scale second-class military enterprise, the state-owned 920 Factory. It specializes in the research, development, and manufacturing of energy-saving products such as drain valves and condensate water recovery devices.

Service

In the course of specializing in the production of energy-saving products and energy-saving devices such as traps and condensate recovery devices, "Hongfeng" takes the revitalization of the national equipment manufacturing industry and the creation of a national brand of traps as its own responsibility, closely tracks the development trends of science and technology and production trends, adheres to the technological innovation strategy of "no one has me, no one has me, no one has me, and I am new", and has realized the transformation from technology introduction, reference and absorption to independent innovation and independent development.

Quality

Based on the strict requirements of the steam system for the reliability, stability, durability and safety of pump and valve equipment, the company has established a complete set of quality assurance and control systems including procurement management, production control, performance verification, quality inspection, after-sales service, etc., and wholeheartedly escorts high-quality products.

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We always respect and love our customers, and regard them as friends and siblings, and dedicate perfect services with a grateful heart, because customers are the pillar and source of our career success.

QB1(P1)-10 single-port exhaust valve

The QB1 single‑port air release valve comprises a body, bonnet, stem, float, and nozzle. Designed for DN50‑DN200 pipelines, it vents trapped air to prevent binding and resistance. In case of pump power failure, the valve automatically admits air to protect the system. Available with threaded or flanged connections.

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Download QB1(P1)-10 single-port exhaust valve

Features

When gas in the pipeline needs to be discharged, air enters the valve chamber under water pressure and is released through the seat opening. Water then fills the chamber, raising the float to close the seat and achieve self‑sealing. During normal operation, air gradually accumulates in the upper part of the chamber, causing the float to descend and open the seat, allowing air to escape through the exhaust nozzle. The float then returns to its sealed position. This cycle repeats continuously while the valve remains open. For inspection or cleaning, the valve should be closed.

Product Structure:

Single-port exhaust valve use and main performance specifications:

1. This valve is suitable for water and hot water pipelines with a temperature of no more than 100°C, so that the air in the pipelines can be discharged.

2. Install a double-port exhaust valve, and a protective valve and ball valve (Q41F-16) must be installed at the bottom to avoid water outage.

3. If there are special standard requirements for flanges, please indicate the flange standards and forms on the contract.

Main Dimensions:

QB1_3en

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