DINKONDA GLOBAL Power Plants Special High Temperature And High Pressure Pneumatic Self-control Ball Valve, Aluminum Alloy Fork Type Pneumatic Actuator

DINKONDA GLOBAL Power Plants Special High Temperature And High Pressure Pneumatic Self-control Ball Valve, Aluminum Alloy Fork Type Pneumatic Actuator

Product Overview

This high-temperature and high-pressure pneumatic ball valve is developed and manufactured by DINKONDA GLOBAL. It is an integrated self-control ball valve designed specifically for high-temperature and high-pressure harsh working conditions. It is equipped with an aluminum alloy fork type pneumatic actuator, a complete set of accessories including a handwheel operating mechanism, valve position feedback device, solenoid valve, and air source filtering and pressure reducing valve. The valve adopts a welded connection structure, and the sealing pair is made of high-temperature resistant hard alloy, which takes into account remote pneumatic control and on-site manual emergency operation. It can be connected to DCS and PLC control systems to achieve cutting off and on/off control of medium pipelines. It is widely used in high temperature and high pressure process systems such as power plants, steam pipelines, coal chemical industry, oil and gas.

Structural Composition

1. * * Valve body**
The valve body adopts a forged steel integrated structure, with butt welded connections at both ends, compact structure, excellent pressure and creep resistance, and can withstand pipeline stress and thermal deformation under high temperature conditions; The valve chamber has been optimized with flow channels, resulting in low flow resistance and smooth medium circulation.

2. * * Sphere and sealing pair**
Solid O-shaped through-hole valve ball, seat sealing surface welded with Stellite hard alloy, metal hard sealing structure, with high temperature resistance, erosion resistance, and thermal shock resistance; Adopting a valve seat pre tightening compensation structure, it can automatically compensate for the thermal expansion and contraction gap of the sealing pair caused by high temperature, ensuring reliable sealing under high temperature conditions and supporting bidirectional sealing.

3. * * Drive actuator**
Aluminum alloy fork type pneumatic actuator, with stable torque output and rapid action response, can be selected as double acting or single acting spring reset type, and can automatically reset to a safe position under gas loss conditions, meeting the requirements of process interlock protection; Equipped with a stainless steel emergency handwheel mechanism, the valve can be manually opened and closed on site in case of gas source failure.

4. * * Complete set of self-control accessories**

-Valve position feedback switch box: collects valve fully open and fully closed position signals, and feeds back valve position status to the central control system;
-Explosion proof solenoid valve: receives electrical control signals, switches gas paths, and controls actuator actions;
-Air filtration pressure reducing valve: filters and removes impurities from compressed air sources, stabilizes and regulates pressure to ensure stable operation of actuators;
-Stainless steel gas source copper pipes, fittings and other accessories have been assembled and debugged as a complete set at the factory.

Product Features

1 * * Strong adaptability to high temperature and high pressure**
Forged steel valve body+hard alloy metal sealing pair, resistant to high temperature medium erosion, can operate stably in high temperature and high pressure conditions for a long time, and the sealing performance is not easily affected by temperature changes.

2 * * Dual use of hand and air, high safety redundancy**
Equipped with a bypass handwheel mechanism, it can be remotely controlled by pneumatic means under normal operating conditions. In case of gas supply interruption or electrical control failure, the valve can be manually operated to ensure process controllability.

3 * * Welded connection, sealed without leakage**
Docking welding connection form, flange without gasket, eliminates the risk of aging and leakage of flange gasket at high temperature, suitable for steam and high-temperature process medium pipelines that do not allow external leakage.

4 * * Metal hard seal, erosion resistant**
The sealing surface is welded with hard alloy, which is wear-resistant and erosion resistant, and can be adapted to high-temperature media containing trace solid particles, with a long service life.

5 * * Integrated complete set supply**
The actuator, solenoid valve, pressure reducing valve, feedback device, and handwheel components are pre assembled and debugged, and only the gas source, control circuit, and pipeline need to be connected on site, greatly reducing the workload of on-site installation and debugging.

6 * * Optional explosion-proof configuration**
Electromagnetic valves and valve position switches can be selected from explosion-proof types to meet the usage standards in chemical and oil and gas explosion-proof areas