Product Model: ZZWP

Body Material: WCB, 304, 316, 316L 

Plug Material: WCB, 304, 316, 316L

Connection Type: Flanged, Threaded, Welded

Pressure Rating: PN16, PN25, PN40

Plug Type: Fluid pressure-balanced plug 

Temperature Range: 35°C to 110°C 

Action Mode: Heating type, Cooling type

Max. Temperature: Cast iron: 180°C; Cast steel: 350°C

Overview of Self-Operated Temperature Control Valve
The self-operated temperature control valve is an energy-saving control valve that requires no external energy source, used for temperature control of various heaters with media such as non-corrosive gases and steam. It uses a bellows + spring as a pressure balance element, featuring high sensitivity, low noise, and reliable performance. It is suitable for temperature control in various heating or cooling systems for non-corrosive liquids, gases, and steam. When the controlled medium temperature rises, the control valve closes or opens (depending on the configuration).

Design Features

1. Has a pressure balance function, good sensitivity, high control accuracy, and a wide adjustable range.

2. Low noise, reliable performance, and maintenance-free.

3. Adopts a standard modular design.

4. Adopts an imported set-point regulator with reliable quality and over-temperature protection function.

5. Can perform multiple combined controls through assembly components.

Standard Technical Parameters

• Valve Body Type: Fluid pressure-balanced plug

• Nominal Diameter: DN15–DN125

• 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)

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

• Gland Type: Clamp plate type

• Packing: V-type PTFE, flexible graphite

Valve Internals

• Plug Type: Balanced plug

• Plug Material: 304, 316

• Seat Material: 304, 316, PTFE

Bonnet
Built-in pressure balance mechanism, composed of a 316 bellows + 304 balance spring. The regulating mechanism and actuator can be assembled/disassembled via a connecting nut.

Actuator
The temperature controller is the actuator of the temperature control valve. It works based on the incompressibility and thermal expansion/contraction pressure of the liquid. The temperature controller has two models with multiple selectable temperature control ranges.

Special Type
For high-cleanliness working environments, no lubrication is required.