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Discount Price Motorized 3 Way Pvc Ball Valve - Rack and Pinion Ball Valve – Hankun

Hankun Company can provide all accessories for pneumatic actuators such as limit switches, solenoid valves, air filter regulators, positioners, etc. For international customers, we can provide international brands such as ROTORK, SIEMENS, Honeywell, Emerson and other mainstream brands to meet all customer requirements.

Valve positioner is a device that receives 4-20mA weak current signals from the controller or control system, and sends air signals to the pneumatic actuator to control the valve position.

Valve positioners can be divided into pneumatic valve positioners, electro-pneumatic valve positioners and intelligent valve positioners according to their structure and working principle.

The valve positioner can increase the output power of the control valve, reduce the lag in the transmission of the regulating signal, accelerate the movement speed of the valve stem, improve the linearity of the valve, overcome the friction of the valve stem and eliminate the influence of unbalanced force. So as to ensure the correct positioning of the control valve.

It is used in conjunction with a pneumatic actuated control valve to form a closed loop control loop. The direct current signal given by the control system is converted into a gas signal for driving the control valve to control the action of the control valve. At the same time, feedback is performed according to the opening of the control valve, so that the valve position can be correctly positioned according to the control signal output by the system.

Common positioners include mechanical positioners with higher cost performance and smart positioners with a higher degree of intelligence.


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carry on to boost, to guarantee products excellent in line with market and consumer standard specifications. Our enterprise has a quality assurance system are actually established for Steam Control Valve, Modulating Control Valve, Compact Pneumatic Actuator, As we are moving forward, we keep an eye on our ever-expanding product range and make improvement to our services.
Discount Price Motorized 3 Way Pvc Ball Valve - Rack and Pinion Ball Valve – Hankun Detail:

Product Introduction

Product Advantages

Double Block And Bleed:

This safety feature eliminates the buildup of pressure due to high pressure media trapped in the valve ‘s body cavity, even while the valve is in the fully closed position. Additionally, secondary graphite body seals and flexible graphite packing prevents leakage through the body joints and stuffing box, respectively.

Internal Trunnion Design:

Upper and lower bearing plates hold the ball in place, preventing the ball from floating axially and avoiding excess load on the seats. External trunnion design is available in certain sizes.

Double Seals On Body Joints:

Primary elastomeric seals ensure zero leakage in standard operating conditions. Secondary graphite seals ensure proper body joint sealing in extreme temperature scenarios.

Pressure Energized Stem Packing:

Our proprietary energizer ring,  located above the primary o-ring stem seal, provides insurance in the rare event that the O-ring is damaged by using the media pressure to create an upward compressive force on the packing. This upward force on the packing combined with the downward compressive force created by tightening the packing gland results in a larger net compressive force on the packing and better seal than atypical packing design.

Valve Position Indication:

Clear stamping on the outer diameter of the mounting flange identifies the open or close position of the valve based on the stem key orientation.

Valve body: A216 WCB, A351 CF8, A351 CF8M

Valve stem: A182 F6a, A182 F304, A182 F316

Valve trim: A105+HCr(ENP), A182+F304, A182+F316

Valve seat: RPTFE, A105, A182 F304, A182 F316

Actuator: Pneumatic actuator

Type: Rack and pinion

Voltage: 24, 110, 220


Product detail pictures:

Discount Price Motorized 3 Way Pvc Ball Valve - Rack and Pinion Ball Valve – Hankun detail pictures


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  • This company has the idea of "better quality, lower processing costs, prices are more reasonable", so they have competitive product quality and price, that's the main reason we chose to cooperate.
    5 Stars By Beryl from Colombia - 2018.05.15 10:52
    This is a honest and trustworthy company, technology and equipment are very advanced and the prodduct is very adequate, there is no worry in the suppliment.
    5 Stars By Jacqueline from London - 2018.05.15 10:52

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