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Pneumatic hard sealing wafer butterfly valve

Pneumatic wafer type hard seal butterfly valve application and scope

Main performance of pneumatic hard sealing wafer butterfly valve: leak rate: ≤1.3×10-9Pa.M3/S;

Applicable pressure range: 1.3×10-5Pa～3×105Pa;

Working temperature: fluororubber -25℃～+150℃;

Installation position: any;

Air source pressure: 0.4-0.6Mpa;

Pressure difference on both sides of the valve plate has nothing to do with the opening and closing of the valve;

Life: ≥ 10000 times.

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The principle of the pneumatic wafer type hard- sealed butterfly valve

Control the pneumatic actuator with an electromagnetic reversing valve, so that the valve stem can be rotated 90° to achieve the purpose of switching.

Characteristics of pneumatic wafer type hard- sealed butterfly valve

The cylinder adopts a 1/4 rotary cylinder, and the angle can be adjusted from 1° to 5°.

Main parts of the pneumatic wafer type hard seal butterfly valve material

Body, rod, plate：stainless steel, carbon steel nickel-plated;

Seals： fluorine rubber

Features of pneumatic wafer type hard- sealed butterfly valve

  1. Explosion-proof, switch, positioner
  2. Smooth channel, stable movement and wide application
  3. Small opening and closing torque, flexible and convenient operation, labor-saving and energy-saving
  4. High temperature resistance, high pressure resistance, corrosion resistance, wear resistance and long service life
  5. Three-dimensional eccentric principle design, the sealing surface is separated instantly when the butterfly plate is opened
  6. Multi-level sealing structure, excellent sealing performance
Specifications
Design Basis GB standard ANSI standard
design standards GB/12238 API609
Structure length clip-on link GB12221 ANSI B16.10 ANSI B16.5(2-24″)
Connection flange size GB/9113, JB/T79 ANSI B16.47(26-32″)
Experiment and Inspection JB/T9092 API598

Remarks: The structural length and connection size of the series ball valves can be designed and manufactured according to customer requirements

Technical Parameter
Nominal diameter DN50~800mm
Connection method Wafer type
Cylinder options AT series, GT series, AW series, imported actuator series
Cylinder form Double acting, single acting (spring return)
way to control Switch type, adjustment type, three-stage type (opening optional)
Nominal pressure 16, 25, 40bar (please specify when ordering with higher pressure)
Air pressure Double acting: 4~8bar, single acting: 5~8bar
medium temperature W1: -40~180℃, W3: -30~425℃, W4: -40~425℃
ambient temperature Standard type:-20~80℃
Body Material Carbon steel (C), stainless steel (P4, P6)
sealing material PTFE (F), metal hard seal (H), carbide (Y)

Remarks: Other special sealing materials or special temperatures can also be designed and selected according to customer requirements

Accessories selection
The electromagnetic valve Double-acting two-position five-way, single-acting two-position five-way, single electric control double electric control indicate when ordering
Air source treatment triple Regulate the air source, filter, lubricate the cylinder
limit switch Remote feedback switch signal
Manual mechanism The valve can be opened and closed manually
Locator Input analog signal (4-20mA or 0-10V), adjust valve opening
Remark The above accessories are not standard accessories. If you need to configure the configuration, please specify when ordering.

The solenoid valve and limit switch are divided into explosion-proof and non -explosion-proof. If explosion-proof is required, the explosion-proof grade should also be indicated

 

Pneumatic hard sealing wafer butterfly valve-drawing

 

Main parts material table
serial number Part Name material serial number Part Name material
C P4 P6 C P4 P6
1 Hexagon socket screws 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 11 valve body WCB ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni12Mo2Ti
2 cap WCB 1Gr18Ni9Ti ZG1Cr18Ni12Mo2Ti 12 stem 1Cr13 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti
3 Gasket 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 13 connecting bracket WCB WCB WCB
4 valve seat PTFE. Stainless steel + flexible graphite 14 key 45 45 45
5 Gasket 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 15 bushing PTFE.composite bearing
6 Butterfly WCB ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni12Mo2Ti 16 filler PTFE. Flexible graphite
7 cylindrical pin 45 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 17 gland WCB ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti
8 lower lid WCB ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni12Mo2Ti 18 Pneumatic device Extruded aluminum alloy
9 Gasket PTFE. Stainless steel + flexible graphite 19 position indicator plastic
10 bushing PTFE.composite bearing

Remarks: The materials of other parts and seals can also be designed and selected according to actual working conditions or customer requirements

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