CanGaSys.

CANGASYS AXIALS SERIES

Axial Flow Pilot Type

 High Capacity, High & Middle Pressure

               Regulator 

Precisely Accuracy of Regulating & Fail-closed Designed

Low Noise & High Cv, Best Choice for City Gate Station

 

    CanGaSys Axial series are particularly designed for gas transmission and distribution systems where high capacity and very stable pressure, while large turn down with min. maintenance are required.

    The unique design of differential pilot makes a compact but excellent performance regulator. Thanks to the all-in-one pilot control loop with restricting and filtering element and main diaphragm actuator.

    CanGaSys Axial series have an amazed high Cv and flow capacity with very silent operation, because of the straight flow passage!

They can be slaved in any pressure reduction applications where inlet pressure is up to 100 bars and outlet pressure range 0.3 ~ 49 bars.

                                

                                  

 

 

 

 

 

 

 

 

 

 

 

 

•CanGaSys Axial series differential pilot configuration provides the main regulator stability and elimination of pulsing, pumping phenomena which usually occur in operation of high turn down or differential pressure situation for high capacity regulators.

•The special design of pilot control system also offers extremely stable and high precision of outlet pressure, regardless the variable inlet pressure.

 

 Operation

 •The main regulator valve is based on the force balance principle. The diaphragm of main valve is fixed with the plug and subject to a set of forces on both sides of it. The balanceable position is a relative response of the adjusted pressure, supplied by pilot system, forced on one side of diaphragm. The actual output pressure of main valve forced on the other side of diaphragm.

 •The Pilot system has a double diaphragm low flow rate “ sensor” pilot, feeds a constant control pressure (force) to outlet of main valve side of diaphragm. A filter and pre-regulator assure the stability of feeding to the sensor pilot.

 •The adjustment of outlet pressure of regulator can be made by adjusting screw of sensor pilot manually ,or remote actuated by using pneumatic or electronic signal devices.

 

  Advantage

·        High accuracy of pressure control﹝+/- 1%﹞or better.

·        High flow rates (refer to the Kg table) with large turn down.

·        Working in the low flow range, has capacity range of 1 / 1000，without pumping.

·        Can be serviced in versatile application of gas system.

·       Tight positive shut off.

·       Easily maintained, only the cone and seat are subjected to normal wear, easily replaced

    by installing a spacer on down stream side.

·       Minimum installation space required.

·       Main Valve is with position indicator.

·       Ability of extension for remote control or flow control valve.

 

  Application

       City Gate Station                          ─ Applications where required high flow capacity, pressure and precision.

       Regulation and Measurement Sets     ─ Applications where required high pressure and precision and low noise level.

       Gas Production on Well                  ─ Where pressure may reach 100 BARS，it can be used as a flow regulator                                                                      (control valve) with create a differential signal by an orifice plate.

 

Operation Pressure

 

ANSI 150

ANSI 300

ANSI 600

Max. Inlet Pressure (BAR)

21

49

100

Max. Outlet Pressure (BAR)

15

40

52

Min. Outlet Pressure (BAR)

0.3

0.3

0.5

                         * Available in ANSI 600RTJ class

 

Materials

Main Components

Body

Cover

Diaphragm

Plug & Seat

Main Regulator

A216Gr WCB

A216Gr WCB

Nylon Screen with Nitrile Rubber

SS

Differential Regulator

CA 15

Aluminum

Nylon Screen with Nitrile Rubber

SS

Pilot

CA 15

Aluminum

Nylon Screen with Nitrile Rubber

SS

 Pilot Filter

A36

A36

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Filter Elment – Polyethylene 10 Micron

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     Optional Items

1.            Sound Absorber；

2.            Fail Open or Fail Close Configuration；

3.   Active & Monitor mounted in a Compact From；

4.   Electro Servo Actuator or Top mounted Miniature Controller for Remote Operation

     Flow Coefficient vs. Nominal Diameter

ND

2”

3”

4”

6”

Kg

2,320

4,700

9,280

17,600

 

     Size Selection

Sub-critical Flow

Critical Flow

Where：

P1 / P2 ≥ 0.53

P1 / P2 < 0.53

Q = Flow rate in SCMH

Standard Cubic Meter per Hour (15C, 1atm)

Q = Kg . √ ( P2•(P1 - P2) )

Q = Kg . P1 / 2

P1: Upstream Pressure in Absolute Bar

Kg: Valve Coefficient 

 

P2: Downstream Pressure in Absolute Bar

                        

      Dimension & Weight