Pneumatic three-way regulating valve

Product Description:

The ZXX (Q) type pneumatic thin film three-way high-temperature regulating valve adopts a He tube thin-walled window shaped valve core structure, which is different from the liner guidance of the plunger shaped valve core. Equipped with multiple spring actuators, it has the advantages of compact structure, light weight, small volume, and easy disassembly and assembly. Widely used for precise control of gas, liquid and other media, process parameters such as pressure, flow rate, temperature, and liquid level are maintained at given values. Suitable for situations where a fluid is split into two streams through a three-way valve or two fluids are combined into one fluid through a three-way valve.

This series of products has two types: three-way merging and three-way branching. The nominal pressures are 1.6, 4.0, and 6.4 MPa; The valve body diameter range is DN25~200. The applicable fluid temperature ranges from -60 ¡æ to+450 ¡æ. The leakage standard is level IV. There are two types of flow characteristics: straight lines and parabolas.

Product Features:

The flow direction of the valve core is in the open state, so the valve can work stably.

In addition to the lining guide at the upper valve cover, the side of the valve core and the inner surface of the valve seat also have a guiding effect, with a large guiding area and reliable operation.

The actuator adopts a multi spring structure, reducing the height by 30%. Reduce weight by 30%.

Material of parts:

Valve body and cover: HT200, ZG230-450, ZG1Cr18Ni9Ti

Valve core and seat: 1Cr18Ni9Ti, welded with Stellite alloy

Corrugated film: Nitrile rubber clip reinforced polyester fabric

Packing: polytetrafluoroethylene, flexible graphite

Membrane cover: A3

Spring: 60SiMn

Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti

Lining: 2Cr13

Soft seal valve core: reinforced polytetrafluoroethylene

Gasket: Rubber asbestos board, 10, 1Cr18Ni9Ti asbestos wrapped gasket

actuator

Type: Multi spring thin film actuator ZP280B/K, ZP400B/K, ZP600B/K, ZP1000B/K

Valve function: positive action, negative action

Membrane material: Nitrile rubber clip reinforced polyester fabric

Spring range: 20-100KPa, 40-200KPa, 80-240KPa

Gas supply pressure: 0.14-0.4MPa

Signal interface: Internal thread M16 ¡Á 1.5 (M10 ¡Á 1)

Environmental temperature: -30 ¡æ~+70 ¡æ

Attachment (configured according to requirements)

Positioner, air filter pressure reducing valve, handwheel mechanism, limit switch, solenoid valve, valve position transmitter, relay, holding valve, others

Table 1 Kv Value and Travel

Table 2 Allowable pressure difference

Table 2-1 ZXQ (Confluence Type) Confluence Scenarios

Table 2-2 ZXX (Confluent/Divergent) Diversion Scenarios

Note 1) For ZXQ (X) W-type three-way bellows sealed regulating valve, the maximum allowable pressure difference is 1.0MPa. If the value in the table is less than 1.0MPa, it remains unchanged. If the value is greater than 1.0MPa, it is taken as 1.0MPa.

External dimensions and weight

Standard heat dissipation corrugated tube sealing type, external dimensions and weight

Ordering Instructions

Name and model of regulating valve

Nominal pressure Mpa

Nominal diameter (mm)

Rated flow coefficient (Kv)

Inherent flow characteristics

medium name

Working temperature and range

Operation mode of the whole machine

Pressure set point and adjustment range

Valve body, valve internals, and packing materials

Attached attachments

Other special requirements