Electric regulating ball valve
阀门型号：VQ947F/H，VQ977F/H,Q941F/HValve models: VQ947F/H, VQ977F/H, Q941F/H
Diameter specification: DN15 to DN300
Structural form: O-shaped core, V-shaped core
Valve body material: cast steel (WCB), stainless steel (304, 316, 316L)
Nominal pressure: PN16, PN25, PN40, PN64
Applicable temperature: -40 ℃~450 ℃
Application scope: Application scope: Water, steam, pulp, media containing fibers and powder particles
Product features: compact structure, large circulation capacity, stable and reliable action, excellent adjustment performance
Electric regulating ball valve is a valve device used for industrial automation process control, which adjusts and cuts off the medium by driving the ball to rotate through an electric actuator
1. Its core components consist of a ball valve body and an electric actuator, supporting remote control input signals (such as 4-20mA DC or 220V AC) for precise operation. The following provides a systematic explanation of the working principle, structural characteristics, classification, and application fields:
1、 Working principle
The electric regulating ball valve is designed based on a 90 ° rotational motion. The ball rotates around the axis under the drive of the valve stem, and the flow rate and pressure of the medium are adjusted by changing the opening angle of the ball.
The valve core of the V-shaped ball valve has a special notch that can generate shear force to cut off fiber or granular media, achieving self-cleaning and preventing jamming, with an adjustment ratio of up to 200:1.
The track adjustment ball valve adopts a pre tensioned spring seat. When the ball is opened and closed, it first disengages from the sealing surface and then rotates to ensure zero friction and bidirectional sealing. It is suitable for high-pressure large-diameter pipelines.
2、 Technical features
Structural advantages:
Small size, light weight, easy installation, low driving torque, high flow capacity, and low pressure loss.
The sealing forms include elastic seals (such as polytetrafluoroethylene) and metal hard seals, the latter of which is resistant to high temperatures (up to 500 ℃) and can leak up to level IV (hard seal) or level VI (soft seal).
Integrated direct connection actuator design, no need for additional servo amplifiers, supports single-phase or DC power drive.
Performance parameters:
Nominal diameter: 20~400mm (such as ZAJQ model covering 20~300mm).
Nominal pressure: 1.6~6.4MPa, applicable temperature range -60 ℃ to 500 ℃.
The flow characteristics are fast opening or approximately equal percentage, with a response time of ≤ 3.5s.
3、 Main types
Type Description Typical Model Examples
Universal ball valves have a basic floating or fixed ball structure, suitable for medium and low pressure cut-off and regulation, such as chemical and water treatment systems
ZKJR series
V-shaped regulating ball valve with V-shaped notch valve core enhances regulating accuracy, specifically designed for media containing fibers, mud or solid particles (such as pulp, high viscosity liquids) ZDJV series
Wedge sealing technology and spring pre tightened valve seat for track adjustment ball valve, achieving high-pressure bidirectional zero leakage, suitable for Q947 long-distance oil and gas pipelines
The clamp/flange connection method is divided into clamp type (double headed bolt) and flange type, with a compact structure that complies with JB/T74-90 or ANSI standards
ZAJQ ultra short clip on type
4、 Application Fields
Chemical and Petroleum: Control corrosive media, high-temperature steam, and hydrogen sulfide containing gas-liquid, such as pipeline regulation in refineries.
Papermaking and Metallurgy: Processing fiber suspensions or crystalline particle materials, using V-shaped valve shear function to prevent blockage.
Electricity and municipal services: cooling water systems, sewage treatment, relying on low leakage sealing and high reliability.
Special working conditions: For environments with a small solid particle content of ≥ 3% or pipeline scaling, hard sealed V-shaped or track type designs are preferred.
