ZZY self operated single seat regulating valve

Instructions for using self operated pressure regulating valve

ZZY type self operated pressure regulating valve (ZZY self operated regulating valve) does not require external energy. It uses the energy of the regulated medium as a power source to introduce the control valve core position into the actuator, and changes the pressure difference and flow rate at both ends to stabilize the pressure before (or after) the valve. It has the advantages of sensitive action, good sealing, and small pressure set point wave power, and is widely used in automatic control of pressure reduction and stabilization or release and stabilization of gas, liquid, and steam media.

This series of products includes single seat (ZZYP), sleeve (ZZYM), double seat (ZZYN), and three structures; There are two types of actuators: membrane type and piston type; The types of action include pressure regulation after the pressure reducing valve (Type B) and pressure regulation before the pressure relief valve (Type K). The nominal pressure rating of the product includes PN16, 40, and 64; Valve body diameter range DN20-300; There are three levels of leakage: Level II, Level IV, and Level VI; The traffic characteristic is fast opening; The pressure is adjusted in stages from 15 to 2500Kpa. Can be combined as needed to meet user operating requirements.

Product features of self operated pressure regulating valve

Self operated pressure regulating valves do not require external energy and can work in places without electricity or gas, which is both convenient and energy-saving.

The pressure segmentation range is fine and intersecting with each other, with high adjustment accuracy.

The pressure setting value can be continuously set during operation.

For regulating the pressure after the valve, the ratio of the pressure before the valve to the pressure after the valve can be 10:1-10:8.

Rubber diaphragm type detection, with high precision and sensitive action of the actuator.

Adopting a pressure balance mechanism to make the regulating valve responsive and precise in control.

Material of parts for self operated pressure regulating valve

Valve body: ZG230-450, ZG1Cr18Ni9Ti, ZGCr18Ni12Mo2Ti

Valve core: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti

Valve seat: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti

Valve stem: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti

Membrane cover: A3, A3 steel coated with tetrafluoroethylene stainless steel

Packing: Nitrile, Ethylene Propylene, Fluorine, Oil Resistant Rubber

Connection size and standard of self operated pressure regulating valve

Flange standard: Casting method according to BG9113-88, JB/79-94

Flange sealing surface type: PN16 convex surface

PN40¡¢ 64 is concave convex, and the valve body is concave convex

Structure length according to BG12221-98

Execution mechanism signal interface: Internal thread M16 ¡Á 1.5

The distance between the valve body flange and the flange end face can be manufactured according to the standard specified by the user. For example: ANSI, JIS, DIN, etc.

Ordering Notice for Self operated Pressure Regulating Valve

Please provide the following information when placing an order:

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