Stainless steel thin film single seat pneumatic control valve ZJHP-16P

Stainless steel thin film single seat pneumatic control valve ZJHP-16P

Purpose and Characteristics

Purpose: It is a right angle rotating structure that can be used in conjunction with valve positioners to achieve proportional adjustment; The V-shaped valve core has a large rated flow coefficient, adjustable ratio, good sealing effect, sensitive adjustment performance, small volume, and can be installed vertically and horizontally in various regulating occasions. Suitable for controlling media such as gases, vapors, liquids, etc.

Features: It is a right angle rotating structure composed of a V-shaped valve body, pneumatic actuator, locator, and other accessories; There is an inherent flow characteristic that is approximately equal in percentage; Adopting a dual bearing structure, the starting torque is small, and it has good sensitivity and induction speed; Cutting ability.

The pneumatic piston actuator uses compressed air as the power source, which drives the crank arm to rotate 90 degrees through the movement of the piston, achieving automatic opening and closing of the valve. Its components include: adjusting bolts, actuator housing, crank arm, cylinder block, cylinder shaft, piston, connecting rod, and universal joint.

The working principle of pneumatic control valve: Pneumatic control valve consists of an actuator and a regulating mechanism. The actuator is the thrust component of the regulating valve, which generates corresponding thrust according to the magnitude of the control signal pressure, and drives the action of the regulating mechanism. The valve body is the regulating component of a pneumatic control valve, which directly contacts the regulating medium and regulates the flow rate of the fluid.

Simple control, fast response, and intrinsic safety, without the need for additional explosion-proof measures. It is powered by compressed air to achieve on-off or proportional regulation, with a cylinder as the actuator, receiving control signals from industrial automation control systems to adjust various process parameters such as flow rate, pressure, and temperature of pipeline media.

This valve should be stored in a dry room, and both ends of the passage must be blocked. Do not stack or store. Long term storage should be regularly inspected to remove dirt, and rust proof oil should be applied to all moving parts and processing surfaces to prevent rusting. This valve should be installed on a horizontal pipeline and must be installed vertically. The valve stem is facing upwards.

When the valve is in the fully closed position under the specified closing thrust, the amount of fluid flowing through the valve at the specified pressure difference and temperature is measured.

The leakage rate can usually be expressed as a percentage of the flow capacity at the rated stroke, or as the cumulative amount of flow over a specified time.

Stainless steel thin film single seat pneumatic control valve ZJHP-16P

It mainly consists of three parts: pneumatic actuator, valve body, and accessories. The actuator is powered by clean compressed air and receives 4-20mA electrical signals or 20-100KPa gas signals to drive the valve body to move, changing the flow area between the valve core and valve seat, thereby achieving the function of regulating flow rate. In order to improve the linearity of the valve, overcome the friction of the valve stem and the influence of changes in the working conditions of the regulated medium (temperature, pressure), a valve positioner is used to match the regulating valve, so that the valve position can be accurately positioned according to the regulating signal.