Pneumatic Controlled Regulating Metallic Globe Valve,Single-Seat Adjusting Valve (ZPL210 Series)
Products Introduction
With the development of industrial automation, regulating valves play a pivotal role in the automation process. They possess both
static and dynamic characteristics. The static characteristic refers to the flow characteristic of the valve, which is influenced by factors such as valve's size, valve core & seat structure and the actuator type, valve positioner, inlet pressure and outlet pressures, as well as fluid properties. On the other hand, the dynamic characteristic is controlled by the actuator and positioner. Regulating valve belong
to the control valve series and primarily serve to regulate medium(fluid) pressure, flow rate, and temperature.
●Classification Of Regulating Valves
○By Opening Mode
:
①Vertical Opening
: Single-seat valves, double-seat valves, sleeved valves, angled valves, three-way valves, diaphragm valves
②Rotation Angle Opening
: Butterfly valves, ball valves, eccentric rotary valves, and full-function ultra-lightweight control valves.
○By Driving Mode
:
① Pneumatic control valve
: compressed air as the source
②Electric control valve
: electricity as the source
③Hydraulic control valve:
liquid medium (such as oil, etc.) pressure as the source
○By Adjustment Mode
:
① Regulating type
② Cut-off type
③ Regulating + cut-off type
○By Flow Characteristic Mode
:
① Linear type
② Equal percentage type(EQ%)
③ Parabolic type
④ Quick Opening type
The Advantages Of Our Matallic Regulating Valves
1.The Snap-in structure of the seat eliminates the drawbacks of threaded insertion, and ensures automatic alignment of the valve cage,
valve core,and seat upon tightening of the upper cover. And it's easy to Installation and removal. even in severe corrosion conditions,
facilitating easy removal of the seat for maintenance and repair purposes.
2.The single-seat with double-sealing design makes valve have longer service life while also addressing issues related to seat corrosion
and erosion without requiring part replacement.
3.A one-piece forged valve cover guarantees good sealing effect that is better suited for use under diverse operating conditions.
4.One-piece construction of both the valve core and stem avoids latch-type structural defects to ensure stability even under high
pressure differentials.
5.The balanced type valve cage delivers superior sealing performance throughout flow/characteristic ranges while withstanding
significant pressure differentials.
6.Special treatment (polishing/nitriding/Stellite alloy cladding) extends valve's service life while enhancing reliability.
7.The utilization of high-grade non-asbestos seals or bellows pipe seals, along with the distinctive structure of the packing cover,
effectively resolves the issue of external leakage from the packing cover.


