The ZJHJ precision small pneumatic thin film regulating angle valve single seat valve adopts a top guide structure and is equipped with a multi spring actuator. It has the advantages of compact structure, light weight, sensitive action, S-shaped fluid channel, low pressure loss, large valve capacity, precise flow characteristics, and easy disassembly and assembly. Widely used for precise control of process parameters such as pressure, flow rate, temperature, and liquid level in gases, liquids, and other media to maintain them at given values. It is particularly suitable for regulating high viscosity fluids containing suspended solids and particulate matter with small leakage and small pressure difference before and after the valve, which can avoid coking, blockage, and facilitate self-cleaning and cleaning.
1、 Valve body
Form: Angle shaped single seat cast valve
Nominal diameter: 20-300mm
Nominal pressure: PN1.64.06.4MPa
Connection type: flange according to JB78-59JB79-59
Material: HT200ZG230-450ZG1Cr18Ni9TiZG0Cr18Ni12Mn2Ti


2、 Upper valve cover
Room temperature type: -20~+200 ℃
Heat dissipation type: -40~+450 ℃
Cover form: bolt compression type
Packing: V-shaped polytetrafluoroethylene packing, flexible graphite, stainless steel corrugated pipe.
3、 Valve components
Valve core type: upward guide single seat plunger type valve core
Flow characteristics: equal percentage characteristics, linear characteristics, and fast opening characteristics
Material: 1C18Ni9Ti0Cr18Ni12Mo2Ti
4、 Executing Agency
Type: Multi spring thin film actuator
Film material: Nitrile rubber clip reinforced polyester deposit
Spring range: 0.02~0.10, 0.08~0.24 MPa
Gas supply pressure: 0.14, 0.16, 0.28, 0.40MPa
Air source connector: internal thread M10 × 1
Environmental temperature: -30~+70 ℃
Valve action type: gas open or gas closed
Attachment: Positioner, Handwheel Mechanism
5、 Performance
Leakage rate: The metal valve seat meets the standard ANSIB16.104IV level
Less than 0.01% of rated Cv
Return difference: 3% (without locator)
1% (with locator)
Linear: ± 5% (without locator)
± 1% (with locator)
Note: Use V-shaped polytetrafluoroethylene packing
Adjustable range: 50:1

6、 ZJHJ Pneumatic Angle Control Valve Specification and Parameter Table