Overview

The PQ640H pneumatic eccentric hemispherical valve is a valve actuated by a pneumatic actuator. It utilizes compressed air to drive the actuator mechanism, combined with an eccentric crankshaft design on the valve stem, enabling rapid and stable valve flap operation and regulation. Featuring a metal hard-seal structure, this valve offers excellent wear resistance, high-temperature tolerance, and automated control capabilities. Widely applicable in demanding industrial environments such as petroleum, chemical, metallurgy, and environmental protection sectors where frequent opening/closing or remote automated control is required, it serves as a reliable device for efficient pipeline fluid cutoff and process automation.

PQ640H Pneumatic Eccentric Hemispherical Valve Product Diagram

Feature

1. Pneumatic actuators deliver rapid and reliable performance: Featuring piston or rack-and-pinion mechanisms, they provide swift response with minimal on/off time, support remote and automated control, and can be integrated with positioners for precise proportional regulation.

2. Excentric metal hard seal: The valve disc and seat are made of hard alloy or super-hard material through overlay welding, combined with the motion of eccentric crankshaft to achieve frictionless opening/closing and zero leakage sealing, with excellent erosion resistance, high-temperature and high-pressure resistance.

3. Bidirectional sealing and long service life: The valve is designed for bidirectional sealing, with minimal wear on the sealing pair during operation, ensuring extended service life. It is particularly suitable for harsh media containing particles or slurries.

4. Low flow resistance and anti-clogging: When fully open, the valve body channel is nearly identical to the pipeline inner diameter, ensuring strong flow capacity, minimal pressure loss, and preventing medium deposition or blockage.

5. Compact and easy-to-integrate design: The integrated actuator-valve assembly ensures convenient installation, supports multiple control signals and accessory expansion, facilitates integration into automation systems, and simplifies maintenance.