Description
Pneumatic PFA PTFE lined Globe Control Valve
Pneumatic PFA PTFE lined globe control valve Features as below:1. Good corrosion resistance: the inner cavity of Pneumatic PFA PTFE lined globe control valve body, core, seat are lined with 3mm thick fluorine (PTFE,PEP,PFA) , which can withstand strong corrosive fluid.
2. Good sealing performance: double sealing with PTFE bellows and packing.
3. The leakage quantity is little, because the Pneumatic PFA PTFE lined globe control valve core and seat are soft seal, leakage was far below the national Ⅳ level standard.
4. High adjustment accuracy: Pneumatic PFA PTFE lined globe control valve adopts precise and small pneumatic and electric actuators, small in size and light in weight.
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PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE SPECIFICATION
Pneumatic PFA PTFE lined globe control valve Body type: straight through casting globe type
Fluoride (PTFE,FEP,PFA) linedSpool type: non-balanced single seat plug type Nominal size: DN20~200,、 NPS 3/4〞~ 8〞 Nominal pressure: PN16 ~ 100、 CLASS 150LB ~ 600LB Connection: flange: FF、RF、MF、RTJ Welding: SW、BW Flange dimension: According to to IEC 60534 Pneumatic PFA PTFE lined globe control valve Bonnet type: Ⅰ:standard type（-29℃~150℃） Packing: V type PFTE packing, flex. graphite packing, etc. Gasket: Metal graphite packing Pneumatic PFA PTFE lined globe control valve Actuator: Pneumatic: multi-spring diaphragm actuator, piston type actuator. -
PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE STRUCTURE
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PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE MATERIAL
Component name Control Valve Material Body/Bonnet WCB/CF8/CF8M/CF3M+PFA/PTFE Lined Material PTFE,FEP,PFA Control Valve spool/Seat 304/316/316L Lined PTFE/FEP/PFA Packing PTFE Gasket PTFE Diaphragm Cover Normal:Q235,Special:304 Diaphragm NBR with reinforced polyester fabric Spring Normal:60Si2Mn,Special:50CrVa Control valve stem 2Cr13/17-4PH/304/316/316L -
PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE PERFORMANCE
Pneumatic PFA PTFE lined globe control valve Flow characteristic Linear, percentage, quick open Allowable range 30: 1 Rated Cv value Percentage CV6.3~400 ，linear CV6.9~440 Pneumatic PFA PTFE lined globe control valve
Allowable leakageSoft seal: VI grade（foam grade）
Leakage standard: GB/T 4213Pneumatic PFA PTFE lined globe control valve Performance Intrinsic error(%) ±1.5 Return difference(%) ≤1.5 Dead zone(%) ≤0.6 Difference from beginning to end point(%) ±2.5 Rated travel difference(%) ≤2.5 -
PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE ACTUATOR PARAMETER
Pneumatic PFA PTFE lined globe control valve
Type\ MethodPneumatic diaphragm actuator ZH23～ZH56 Multi-spring type Usage Regulating type, ON-OFF type Air supply pressure or Power supply voltage Air supply pressure (Spring range)
140（20～100）Kpa G
240 (40～200) Kpa G
280 (80～240) Kpa GConnector Air pipe connector: RC1/4 Direct action Pressure increase, stem descend, valve close. Reaction Pressure increase, stem ascend, valve open. Input signal 40～20mA.DC（with positioner） Lag ≤1%FS（with positioner） Linear type 2%FS（with positioner） Environmental temperature -10℃～+70℃ Pneumatic PFA PTFE lined globe control valveAccessories E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch
Non-standard accessories, need special customized notes. -
PNEUMATIC PFA PTFE LINED GLOBE CONTROL VALVE TECHNICAL PARAMETER
Nominal size, DN 20 25 32 40 50 65 80 100 125 150 Rated flow coefficient, Cv Percentage 8 12 20 32 50 70 100 200 240 Linear 5 10 16 25 38 63 80 120 220 300 Travel 16mm 25 mm 40mm 60mm Pneumatic actuator
Diaphragm effective area, Ae (cm2)ZHA/B-22 ZHA/B-23 ZHA/B-34 ZHA/B-45 350 350 560 900 Action Spring range Pneumatic PFA PTFE lined globe control valve
Max. allowable pressure difference（MPa）Air open 20-100KPa 1.16 0.7 0.44 0.28 0.18 0.17 0.11 0.07 0.07 0.05 40-200 KPa 3.34 2.14 1.31 0.84 0.53 0.51 0.33 0.21 0.22 0.15 80-240 KPa 6.4 4.99 3.05 1.95 1.25 1.18 0.78 0.5 0.51 0.36 Air close 20-100KPa 2.23 2.14 0.87 0.56 0.35 0.34 0.22 0.14 0.15 0.1 40-200 KPa 6.4 6.4 5.86 3.64 2.3 2.21 1.43 0.91 0.95 0.66 80-240 KPa 6.4 6.4 6.4 5.04 3.18 3.06 1.98 1.26 1.32 0.92
