China Pneumatic Diaphragm Valve with Top-Control Positioner

pneumatic diaphragm valve with top-control positioner
Function of the process controller
1/Sample operation
2/Analog feedback 4-20mA
3/Binary input and output
4/Precise process control (temperature, flow, etc)
5/A variety of flow characteristic curve optional
Switch prompts feedback
Number Communicate control Code
1 process controller 15mm route 7915
2 process controller 20mm route 7920
3 process controller 25mm route 7925
4 position locator locator 15mm route 7815
5 position locator locator 20mm route 7820
6 position locator locator 25mm route 7825
7 swich prompts signal feedback 7100
8 switch prompts feedback
79 is a microprocessor-based smart locator. It can achieve remote set by 0/4-20mA and 05/10V signal. By using PID algorithms and PWM control technology,it can adjust the valve opening quickly and accurately. It can also achieve accurate control of fluid flow rate, temperature and other process volume in various applications.
The product can achieve remote automatic control. It is suitable for us in a sealed space.With a variety of flow characterisitc curve, its safe location and close function can also bebecustomeized by the user.
Easy install, simple operaion, low failure rate and convenient maintenance are
characteristics of the process controller.
CE Certificate can be provided.
Principles for the process control
The process controller is acually composed of two parts-process control and position adjustment.
Position adjustment as shown in the oval frame figure. Position measureing system detects the valve opening degree in
realtime and the actual position valve (POS) s fedback to position controller as standard signal. When there is a deviation
(Xd1) between the external set position valve (CMD) and feedback valve. The position controller will generate adjustment
signal. If deviation valve is positive, the air intake solenoid valve willwork according to air intake signal (B1). If deviation valve
is negative, the air discharge solenoid valve will work according to air discharge signal (E1) It promotes the work of the
acuator.It operates in such a way repeatedly until the deviation valve (xd1) is 0.Z1 represents the amount of interference.
Such as the reaction of fluid to the pneumatic valve etc.
The principles of process control is similar to the priceples of positional control. When there is deviation (Xd2) between the
process setpoint (SP) and process feeback valve (PV), the process deviation valve will be converted to position control valve.
The position regulator adjust the valve opening.It operates until the process deviation valve (Xd2) is 0.
The Pneumatic Diaphragm Valve with Top-Control Positioner (XBL-G6B81F16R)
Has certificates as below:
Certificate / CE Certificate / 3A Certificate / PDF Certificate and with operation manual
Please feel free to contact us if you want to see those.
The products is guaranteed.
And with additional after-sales service:
about the seal (EPDM+PTFE): life- long replacement.
about valve and other parts: One year quality problems appear in OZ, life-long maintenance
Please feel free to contact us ,if you want more information.

Technical Data Material Contact with the product componentsInvestment casting316L(1.4409) Can provide material inspection report Materal no contact with the product components 304(1.4301) Sealing material StandardEPDM+PTFE Adopt sealing material with all the seal material the FDA 117.2600 OptionEPDM Pressure Pressure of work16 bar Control air pressure5-8 bar Temperature Working temperatureEPDM(-40 ~+130 degree), EPDM+PTFE(-5~+160degree) Surface treatment Inside surface treatmentRa≥0.4-0.8μmSurface treatmentConnection The diameter weldingDIN11850-2,DIN11850-1,3A,SMS,ISO,IDF,BS,BPE.... Connection mode:weld, triclamp,flange,wled socket,screw etc Body modeStraight ,T type, U type, L type,Multi type can be chosen Optional driven Brainpower Pneumatic controlPleastic actuator and stainless steel actuator operate modeABS or stainless steel handle or pneumatic actuator