Product Model: V231D01 

Body Material: WCB、304、316 

Plug Material: WCB、304、316 

Bonnet Type: Standard type, Ambient temperature type, High-temperature type, Cryogenic type, Finned type, Bellows seal type

Pressure Rating: PN16、PN25、PN40、PN64 

Seat Structure: Single-seat type, Pressure-balanced type, Double-seat

Flow Characteristic: Quick opening

Action Mode: Upstream pressure relief type, Downstream pressure reducing type

Pressure Regulation Range: 15–3000 KPa

Product Overview
The self-operated pressure-balanced control valve is widely used in industry. It is a control device that requires no external energy source; it only needs the changes in the measured pressure, temperature, or flow to automatically regulate according to a preset value. It is an energy-saving instrument with multi-functional instrument control systems such as control and execution. Its types can be divided into self-operated pressure (micro-pressure) control valves, self-operated (differential pressure) flow control valves, and self-operated temperature control valves. It is suitable for urban heating, heating supply, and occasions where there is no power or gas supply but control is required.

Standard Technical Parameters

• Valve Body Type: Single-seat

• Nominal Diameter: DN20–DN300

• Nominal Pressure: ANSI 150, 300, 600LB / JIS 10, 16, 20, 30, 40K / PN1.6, 2.5, 4.0, 6.4 MPa

• Connection Type: Flanged: FF, RF, RJ, and LG

• Flange Standard: ANSI B16.5, JIS B2201 / JB/T 79.1 PN1.6MPa, JB/T 79.2

• Threaded: DIN, NPT, RC, BSP, G, etc.

• Welded: GB 12224-89

• Sealing Face Type: PN16 raised face (RF); PN40, PN63, PN100 recessed face (FM)

• Material: WCB, WCC, WC6, 304, 316, 304L, 316L

• Bonnet: Standard type (-20°C to +200°C), Cryogenic type (-60°C to -196°C), Finned type (-40°C to 450°C), Bellows seal type.

• Gland Type: Clamp plate type

• Packing: V-type PTFE, flexible graphite

Valve Internals

• Plug Type: Single-seat plunger type, Pressure-balanced type, Double-seat, Metal seal, Soft seal, Quick opening characteristic

• Plug & Seat: 304, 316, 316L + STL (Stellite)

Actuator

• Type: Multi-spring diaphragm actuator

• Diaphragm Material: NBR reinforced with polyester fabric

• Signal Interface: Internal thread M16×1.5

Product Performance

• Rated Kv Value: Refer to table

• Flow Characteristic: Quick opening

• Action Mode: Upstream pressure control, Downstream pressure control

• Pressure Regulation Range: Refer to table

• Pressure Control Accuracy: ±8%

• Leakage Class: Metal seal: <0.01 (ANSI B16.104-1976 Class IV); Soft seal: <0.00001%