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5611WBellows Seal Single-Seated Control Valve
5611WBellows Seal Single-Seated Control Valve
Brief Description

Valve disc of Type 5611W Bellows Seal Single-Seated Control Valve is top guiding structure, and its composition is compact-type, moreover, its S streamline access can reduce the pressure drop, promote flow rate and have variable range , also enhance its accuracy of flow, bonnet adopts metal bellows sealing construction,can be used to control medium such as poison, inflammable, explosive, volatile and rare precious metals. Moreover, bellows control valve also can be used in vacuum service. Control valve is equipped with multi-spring diaphragm actuator, which has the advantages of compact-type structure and large output force.



Type: Single-Seated ball valve
DN: 40-200mm

PN:ANSI125、150、300、600; PN1.6、4.0、6.4MPa

Connection: Flange, BW, SW(apply to DN15-DN50)

Body Material: WCB,WC6,WC9,C5, CF8,CF8M etc.

Bonnet Type: Standard type (P type):-17~+230℃

           Elongation type(E1): -45-17℃、+230-566℃

Packing: PTFE (V shaped), Teflon asbestos and flexible graphite

Valve trim

Valve disc:Top guiding single-seated plunger valve disc

Control characteristic: Equal percentage, linear, quick open

Trim material:304,304 overlay STL, 316,316 overlay STL, 316L

Bellows material: 304L, 316L, Ha C alloy etc.



Action Type: Gas open (reaction), gas type (positive effect)

  1. Pneumatic-actuator

Type 6100 Pneumatic Diaphragm Actuators

Membrane material: Ethylene propylene rubber filled with nylon

Spring range: 20-100KPa、40-200KPa、80-240KPa

Air supply pressure: 140KPa、160KPa、280KPa、400KPa

Air supply connection:Rc1/4、Rc3/8

Environment Temp: -30-+70℃

Acting type: air open ( reverse acting), air close (positive acting)


Note: (1) The type of large diameter or high pressure difference control valve can also be equipped with 6400 series straight stroke piston actuator.
(2) if the environment temperature below 30 ℃, please contact with Cepai engineers.

(2)Electric actuators

Type: 6200 series electric actuators

Voltage: 220V、380V

Environment Temp: -30-+70℃

Control Signal: 4-20mADC(supply 4-20mA signal feedback as per customer requirement)


Leakage rate: Metal seat:accordance with ANSI B16.104IV level which is less than 0.01% of rating CV.         
PTFE acetylene: accordance with ANSI B16.104IV level which is less than 10-7 of rating CV.

Adjustable ratio: 50:1

Variation:3%( with positioner) 5% (no positioner)

Linear: ±3%( with positioner) ±11% (no positioner)


Accessories ( As per requirements)

Positioner, Filter Regulator, hand wheel, limit switch, solenoid valve, valve position transmitter, pneumatic valve, speed increaser, lock up valve etc.