5611Single-seated Control Valve
5611Single-seated Control Valve
Brief Description

Type 5611 single-seated control valve is made up of multi-spring pneumatic diaphragm actuator and low flow resistance of single-seated control valve body, Multi-spring thin membrane actuator’s function is low height, light weight, simple equipment, Body flow of pneumatic single-seated control valve is in an s-shaped streamline, with the merits of compact, light weight,less pressure drop loss, large capacity of valve, precise flow characteristic, easy maintenance, it can be used in harsh working conditions.Particularly applicable to allow the less leakage, both front and back valve pressure has no big difference and has a certain viscosity with a small amount of fibre medium.



Type: Single-Seated ball valve

DN: 15-250mm

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

Connection: Flange, BW, SW(Optional, for DN15-DN50) 
Body Material: WCB,WC6,WC9,C5, CF8,CF8M etc.


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

          Elongation type(E1): -45-17℃、+230-600℃

Elongation type(E2): -100-45℃

Elongation type(E3):-196-100℃

Radiation fin is available for option
Gland type: Bolt pressing type
Packing: PTFE (V-shape), 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,17PH etc.-



  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.  

Nonmetal seat: accordance with ANSI B16.104IV level which is less than 10-7 of rating CV.

Adjustable: 50:1(Optional 100:1)

Variation:±1%( with positioner) ±3% (no positioner)

Linear: ±2%( with positioner) ±5% (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.