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Pneumatic liner fluorine single seat control valve

6 Jul 2018 12:48:00 browse:3995
  • Introduction
  • Technical Parameters

ZJHPF46 series pneumatic lining fluorine seat control valve is composed of pneumatic diaphragm actuator directly through the single-seat fluorination control valve body. Pneumatic lining fluorine control valve body corrosive medium contact parts are used corrosion-resistant, anti-aging polyfluorinated ethylene propylene, high-pressure lining fluorine plastic technology, but also using PTFE bellows seal. Pneumatic lining fluorine single-seat regulating valve has the regulation of acid, alkali and other high-strength corrosive media and poisonous volatile gas and liquid medium flow. Therefore, pneumatic lining fluorine regulating valve is widely used in chemical, metallurgical, pharmaceutical and other industries. The main features of the product:

(1) Corrosion resistance: Valve body cavity, valve core, valve seat, and all packages are lined with 3mm thick PTFE, which can withstand strong corrosive fluids. The

(2) Good sealing performance: Double sealing with PTFE bellows and packing. The

(3) Less leakage: Because the leakage of the valve core and valve seat is a soft seal, it is much lower than the national IV standard. The

(4) High adjustment accuracy: The use of compact pneumatic actuators and electric actuators is small and light.

  • valve body Parameters
  • Valve trim parameters
  • Actuator parameters
  • control valve Performance
Nominal diameter(DN) 20 25 32 40 50 65 80 100 150
Valve seat diameter(dn) 20 25 32 40 50 65 80 100 150
Rated flow coefficient(KV) 5.0 8 12 20 32 50 70 100 240
Allowable pressure difference(MPa) 3.8 3.2 3.0 2.0 1.8 1.5 1.4 1.0 0.6
Nominal pressure(MPa) 1.6、2.5、4.0、6.4
Rated route(mm) 16 25 40 60
With actuator type ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B45
Nominal pressure(MPa) 1.6、2.5
Capping form Bolt compression type
Seal packing V type PTFE packing
Valve body material WCB+F46、CF8+F46
Valve core form single seat Plunger type valve core
Flow characteristics Linear, equal percentage
valve core material 304+F46
Actuator category ZHA/B Multi-spring film actuator
Actuator model ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45 ZHA/B-56
Effective area(cm2) 350 350 560 900 1400
route (mm) 10、16 24 40 40、60 100
Spring range(KPa) 20~100(standard)、20-60、60-100、40-200、80-240
Diaphragm material Nitrile rubber clip nylon cloth, ethylene propylene rubber clip nylon cloth
Air supply pressure 140~400KPa
Air interface RC1/4"
Ambient temperature -30~+70℃
equipped with accessories Locator, air filter pressure reducer, position valve, route switch, valve positioner, handwheel mechanism, etc.
Form of action Air-to-close (B)—Valve open (FO) when deaeration; Air-opening (K)—Valve off (FC) when deaeration
Item Without positioner With positioner
Basic error % ±5.0 ±1.0
Backlash % 3.0 1.0
dead zone % 3.0 0.4
Starting to
end point
deviation %
Air open Starting point ±2.5 ±1.0
Starting point ±5.0 ±1.0
Air shut Starting point ±5.0 ±1.0
end point ±2.5 ±1.0
Rated route deviation % ≤2.5
Leakage L/h 0.01%× Valve rated capacity
Adjustable range R 30:1
Next:Hygienic pneumatic control valve