control valve

control valve

2 year ago

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HUATAO GROUP LTD.

 9 year year

Product details

HT4000 Pneumatic Diaphragm Control Valve

Introduction

The Pneumatic Diaphragm Low-temperature Angle Control ValvePneumatic Diaphragm Low-temperature Angle Control Valve features a long-neck valve cover for insulation and is equipped with a multi-spring actuator, offering advantages such as compact overall structure, lightweight, and good stability.
The valve body adopts a precision-cast angular structure, made of aluminum alloy, which provides excellent low-temperature resistance.
The bellows seal ensures that the control valve does not leak in low-temperature environments.
With a bottom-in and side-out flow path, the valve has a simple flow path, low resistance, large valve capacity, and bidirectional flow, resulting in good operational stability.
It has a wide adjustable range with an inherent adjustable ratio of 50 and uses a floating sleeve connection, allowing for easy installation.

Parameter

Parameter	Value
Valve Type	Straight-through control valve, angle control valve, butterfly valve
Model	HT4000 Low-temperature Control Valve
Nominal Diameter (DN)	20-100mm
Nominal Pressure (PN)	6 MPa
Valve Body Material	LF4
Flow Coefficient (CV)	1.6-176
Flow Characteristic	Equal percentage, linear
Temperature Range	-60°C to -250°C
Seat Leakage Class	ANSI Class IV, ANSI Class V, ANSI Class VI
Connection Type	Welding
Control Mode	Pneumatic, electric

How to maintain Pneumatic Diaphragm Low-temperature Angle Control Valve?

Maintaining a Pneumatic Diaphragm Low-temperature Angle Control Valve is important to ensure its optimal performance and longevity. Here are some maintenance practices for these valves:

Regular Inspection: Perform regular visual inspections of the valve, including the valve body, diaphragm, actuator, and positioner. Look for any signs of damage, leaks, or excessive wear. Check the tightness of bolts and connections.
Lubrication: Follow the manufacturer's recommendations for lubricating the valve components. Apply lubrication to moving parts such as the diaphragm, stem, and actuator as per the specified intervals and using the recommended lubricant.
Diaphragm Replacement: Diaphragms can wear out over time, so it's essential to monitor their condition. Replace the diaphragm if you notice any signs of damage, degradation, or leaks. Follow the manufacturer's instructions for diaphragm replacement.
Calibration: Regularly calibrate the control valve to ensure its accuracy and responsiveness. This involves verifying the valve's response to control signals and adjusting it if necessary. Consult the manufacturer's guidelines or seek assistance from qualified technicians for calibration procedures.
Air Filter Maintenance: Pneumatic control valves rely on compressed air, and it's crucial to maintain clean and dry air supply. Regularly check and clean or replace the air filters to prevent contaminants from entering the valve and affecting its performance.
Leak Detection: Monitor the valve for any signs of leakage, both during operation and during shutdown periods. Leaks can lead to inefficiencies and affect the overall process performance. If leaks are detected, identify the source and take corrective actions such as tightening connections, replacing seals or gaskets, or repairing any damaged components.
Control System Integration: Ensure proper integration of the control valve with the overall control system. Verify the signal input/output connections, perform function tests, and troubleshoot any issues related to communication or feedback signals.
Training and Documentation: Provide proper training to maintenance personnel on the specific maintenance procedures and requirements of the pneumatic diaphragm low-temperature angle control valve. Maintain records of maintenance activities, including inspection reports, calibration records, and any repairs or replacements performed.
It is important to note that maintenance practices may vary depending on the specific manufacturer and model of the control valve. Always refer to the manufacturer's documentation and follow their recommended maintenance procedures for the particular pneumatic diaphragm low-temperature angle control valve in use.

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HUATAO GROUP LTD.

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9 year

Address: Shijiazhuang, China

Main Product: Pulp Stock Preparation, Paper Machine Equipment & Renovation, Cardboard Production Equipments , Insulation and Building Materials, Mining Equipment and Parts, Industrial Felts

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