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Pneumatic sealing butterfly valve
Model: D673H / F
Nominal diameter: DN50 ~ 800mm
Applicable pressure: 1.3 × 10-5Pa ~ 3 × 105Pa
Operating temperature: Viton -25 ℃ ~ +150 ℃
Body material: carbon steel (C), stainless steel , P6)
Connection: wafer
Design basis: GB standard \ the ANSI standard
Design criteria: GB / 12238, API609
Length of the structure: GB12221, ANSI B16.10 ANSI, B16.5 (2-24 ")
Size: GB / 9113, JB / T79 ANSI B16.47 (26-32 ")
Testing and Testing: JB / T9092, API598

First, the pneumatic clamping butterfly valve seal Product Overview
 Precision   J-shaped elastic ring and three eccentric multi-level metal hard seal   structure, is widely used in the medium temperature ≤ 425 ℃ metallurgy,   electricity, petrochemicals, and water supply and drainage and Municipal   construction and other industrial pipelines, for regulating the flow   and breaking the fluid to use. The valve adopts three eccentric   structure, the valve seat and the disc sealing surface are made of   different hardness and stainless steel, has good corrosion resistance,   long service life, the valve has a two-way sealing function, the product   complies with national GB / T13927-92 valve pressure Test Standard. 
 
 Second, the pneumatic clamp butterfly valve features
 1, the valve adopts three eccentric seal structure, the valve seat and   disc almost no wear, with the more the more tight sealing function. 
 2, the ring made of stainless steel, with the advantages of both metal   seal and flexible seal, both in the case of low temperature and high   temperature, have excellent sealing performance, with corrosion   resistance, long service life and so on. 
 3, the butterfly plate sealing surface using welding cobalt-based hard   alloy, sealing surface wear-resistant, long service life. 
 4, Large-format butterfly plate frame structure, high strength, large flow area, small flow resistance. 
 5, the valve has a two-way sealing function, the installation is not   subject to restrictions on the flow of media, but also the location of   space, can be installed in any direction. 
 6, the drive can be multi-station (rotated 90 ° or 180 °) installation, user-friendly.



 Third, the pneumatic clamp-type seal butterfly valve principle
 Electromagnetic valve to control the pneumatic actuator, the valve stem to achieve the purpose of turning 90 °.

Cylinder with 1/4 rotary cylinder, adjustable angle 1 ° ~ 5 °.

 

Fourth, the main technical parameters

Technical Parameters
Nominal diameter DN50 ~ 800mm
Connection method Clip-on
Cylinder matching AT series, GT series, AW series, import actuator series
Cylinder form Double acting, single acting (spring return)
control method Switch, adjustable, three-stage (opening optional)
Nominal pressure 16,25,40bar (Please specify when ordering for higher pressure)
Air pressure Double role: 4 ~ 8bar, single role: 5 ~ 8bar
Medium temperature W1: -40 to 180 ° C, W3: -30 to 425 ° C, and W4: -40 to 425 ° C
Ambient temperature Standard type: -20 ~ 80 ℃
Body material Carbon steel (C), stainless steel (P4, P6)
Sealing material Polytetrafluoroethylene (F), Metal Hard Seal (H), Carbide (Y)

Note: Other special sealing materials or special temperature can also be designed according to customer requirements
 

Accessories selection
The electromagnetic valve Double-acting election two five-way, two-way single five-way, single electric double-control when ordering
Air treatment triplet Regulated gas supply, filtration, cylinder lubrication
Limit switch Remote feedback switch signal
Hand-operated institutions Can be manually opened and closed valves
Locator Input analog signal (4-20mA or 0-10V), adjust the valve opening
Remarks The   above accessories are not standard accessories, such as the need to   configure the order time, solenoid valves and limit switches are not   explosion-proof and explosion-proof, if explosion-proof also indicate   the level of explosion-proof


 Fifth, the pneumatic clamp on the main parts of the butterfly valve seal material

Main parts material table
Serial number Part Name Material Serial number Part Name Material
C P4 P6 C P4 P6
1 Hexagon screw 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 11 Body WCB ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni12Mo2Ti
2 cap WCB 1Gr18Ni9Ti ZG1Cr18Ni12Mo2Ti 12 Valve stem 1Cr13 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti
3 Gasket 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 13 Connect the bracket WCB WCB WCB
4 Seat PTFE. Stainless steel + flexible graphite 14 key 45 45 45
5 Gasket 1Gr18Ni9Ti 1Gr18Ni9Ti 1Cr18Ni12Mo2Ti 15 bushing PTFE composite bearings
6 Butterfly plate 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 Location indicator plastic
10 bushing PTFE composite bearings

Note:   Other parts and seals of the material can also be based on the actual   conditions or customer requirements design selection 
 
 Six , pneumatic clamp-type seal butterfly valve main dimensions

Main dimensions - PN16 (16bar)
Nominal diameter [DN] Dimensions Connection size Actuator model
L L1 L2 H D ND
50 43 159/211 83/95 277/205 125 4-18 ATD63 / ATE75
65 46 211/248 95/107 287/315 145 4-18 ATD75 / ATE88
80 46 248/269 107/123 365/375 160 8-18 ATD88 / ATE100
100 52 269/315 123/141 420/436 180 8-18 ATD100 / ATE115
125 56 315/345 141/152 436/462 210 8-18 ATD115 / ATE125
150 56 345/409 152/172 466/543 240 8-22 ATD125 / ATE145
200 60 409/438 172/187 593/665 295 12-22 ATD145 / ATE160
250 68 436/559 187/215 682/752 355 12-26 ATD160 / ATE190
300 78 550/600 215/240 725/772 410 12-26 ATD190 / ATE210
350 78 600/633 240/262 832/880 470 16-26 ATD210 / ATE240
400 102 633/730 262/330 862/968 525 16-30 ATD240 / ATE270
450 114 633 262 945/1005 585 20-30 ATD240 / ATE25
500 127 730 300 1058/1060 650 20-33 ATD270 / ATE25
600 154 1320/1970 440/480 1108/1195 770 20-36 ATD25 / ATE28
700 165 1430/2700 480/560 1170/1255 840 24-36 ATD28 / ATE35
800 190 1430/2700 480/560 1325/1365 950 24-39 ATD25 / ATE35

Note:   According to different valve torque, different air pressure and   different actual conditions, select the appropriate actuator size also   changes its relevant

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