Product Details
Overview
The valve features an advanced and well-designed structure, with seamlessly integrated curved flow passages that minimize flow resistance while maintaining strong throughput capability. It consists of components such as the valve body, valve bonnet, valve plug, sleeve, stem, and packing gland.
The valve plug is guided by a sleeve and automatically self-aligns. With its large guiding area, the valve plug exhibits excellent vibration resistance, ensuring smooth operation and high adjustment accuracy.
The sleeve is securely fixed inside the valve chamber using a compression mechanism, making assembly and disassembly simple and maintenance convenient.
The unique cage design is suitable for demanding operating conditions such as flash and cavitation, and also ideal for controlling clean fluids under significant pressure differentials.
Structural Form
Major Components and Supporting Materials
| Valve | Components | Structural Type | Material package | Note |
| Valve body | Straight-through single-seat spherical body | Carbon steel, stainless steel, alloy steel | Casting, forging, welding | |
| Valve core | Piston-type | Stainless steel, special alloy steel | Special requirement: Surfacing welding or spray coating treatment | |
| Valve seat | Sleeve-type | Stainless steel, special alloy steel | Special requirement: Surfacing welding or spray coating treatment | |
| Upper Valve Cover | Room-temperature, elongation-type heat dissipation, metal bellows type | Carbon steel, stainless steel | The amount of elongation varies depending on the temperature. | |
| Filler | V-shaped, O-shaped | PTFE, Flexible Graphite | ||
| Sealing gasket | Serrated, sealed envelope ring | Stainless steel, special alloy steel, flexible graphite | ||
| Executive Agency | Pneumatic diaphragm multi-spring type, cylinder | Spring range (kPa): 20–100, 40–200, 80–240, 120–240 | ||
| Input signal (kPa): 150–400; Positioner 4–20 mA DC, 1–5 V | ||||
| Entirely electronic models 3610L, 3810L, and the PS series | Input signal 4–20 mA.DC, wiring 2-1/2 NPT | |||
Features
This valve features a high-performance sealing ring installed on the sleeve, with a single-seat sealing design that effectively enhances the leakage rating. The valve is ideal for controlling clean fluids under conditions of large pressure differentials and stringent low-leakage requirements.
Main Technical Parameters
Nominal diameter: DN20–DN200 mm
Nominal pressure: PN 1.6–6.4 MPa, ANSI 150–600
Flow characteristics: Linear, equal percentage, quick-opening; Flow coefficient: Cv 6.3–700
Leakage Level: Level V
Adjustable Ratio R: 50:1
Connection method: Flange type
Operating temperature: -196°C to +560°C
Keywords: Balanced Cage Single-Seat Control Valve
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