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Meisonilan specializes in providing solutions for process control valves and shut-off valves to industries such as energy, chemical engineering, electric power, life sciences, and environmental protection. For many years, our automation technologies have been driving operational optimization. Leveraging our field-proven expertise, we provide support for your low-emission strategies.
Introduction
The 23100 linear three-way combined 1-way flow control valve adopts a dual-valve core and valve seat guiding structure. It is designed to regulate and control the aggregation and separation of several flow paths. Two flow paths enter and one flow path exits, which is called a three-way merge, while one flow path enters and two flow paths exit, which is called a 1-way split. The standard 1-way split design is of an unbalanced double-seat internal component structure. At the same time, a balanced internal component form can also be adopted, effectively reducing the unbalanced force caused by the pressure difference of the medium, changing the size of the throttling surface area, thereby controlling the regulation or cutoff function of the equal distribution flow rate composed of any flow path merge or split. Special valve cage internal components such as noise reduction and anti-erosion can also be adopted according to the working conditions.
Technical Parameter
Control Valve Parameter Description
Valve Internal Component Characteristics: Double-valve-seat structure, valve seat guiding internal component
Valve Body Type: Three-way type 
Valve cover type: Normal temperature standard type, High temperature heat dissipation type, Low temperature elongation type 
Temperature range: -196°C to 570°C
Valve stem sealing type: Ordinary standard packing seal
High-temperature packing seal: Bellows seal
Standard leakage grade: CLASSIV (Standard type, metal valve seat)
Flow characteristic: Equal percentage linear
Connection method to pipeline: Flange type, Welding type
Ratio of adjustment: 50:1
Standard connection form of flange
Flange type: JB/T 79.1-94 ~ JB/T 79.4-94 / HG20616-97
ANSIB16.5
Welding type: GBIT 9124-2000 / ANSIB16.25
Leakage quantity execution standard: ANSIB16.104
Compatible with linear actuator:
a. Pneumatic diaphragm actuator
b. Pneumatic piston actuator
c. Electric actuator
d. Electro-hydraulic actuator
Valve Installation & Maintenance
Valve Installation:
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.

Valve Maintenance:
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.
Ordering Instructions
When placing an order, please fill in the Specification Sheet or specify the following information:
  1. If the model has not been selected before ordering, please provide us with the operating parameters:
    (1) Nominal diameter DN (mm);
    (2) Nominal pressure (MPa or bar);
    (3) Fluid properties (including medium temperature, viscosity, or acidity/alkalinity);
    (4) Pressure before and after the valve (pressure differential);
    (5) Requirements for flow characteristics;
    (6) Materials of valve body and valve core;
    (7) Connection type;
    (8) Driving method (provide air supply pressure, driving voltage);
    (9) Supporting accessories (for pneumatic valves, it is recommended that users install an air filter triplet and a 2-position 5-way solenoid valve);
    (10) On-site working conditions.
  2. If the product model of our company has been selected by the design unit, please order directly from our production department according to the model;
  3. When the application occasion is very important or the pipeline is relatively complex, please provide the design drawings and detailed parameters as much as possible, and our experts will review and check them for you.
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