The Original Double Seat Valve

The Original Double Seat Valve / Everfit Technology CO., LTD. (EFT) is a vacuum component, vacuum fitting, processing equipment and system provider with almost 50 years of experience.

The Original Double Seat Valve
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The Original Double Seat Valve

The Original Double Seat Valve

The Original Double Seat Valve

Caution, opening/closing time:

  • Opening/closing time will be effected by the following:
  • The air supply(air pressure).
  • The length and dimensions of the air hose.
  • Number of valves connected to same air hose.
  • Use of single solenoid valve for serial connected air
  • actuator functions.
  • Product pressure.

Air connections

  • Compressed air: R1/8"(BSP), internal thread.

Designation

NO PART NAME QTY MATERIAL
1 Piston 1 SUS 304
2 Cyinder 1 SUS 304
3 Spring assembly 1 SUS304
4 O-ring 1 NBR
5 O-ring 1 NBR
6 Bracket 1 SUSB04
7 O-ring 1 NBR
8 O-ring 1 NBR
9 Lock wire clip 1 SUS 304
10 Stop ring 1 PE
11 Clip complete 1 SUS 420
12 Stem 1 SUS 316
13 Seal ring 2 EPDM
14 Middle piece 1 SUS 316
15 Washer 1 SUS 316
16 O-ring 1 O-ring
17 Screws 1 SUS316
18 Lip seal-EPDM 1 EPDM
19 Valve body-upper 1 SUS 316
20 Valve body-lower 1 SUS 316
21 Valve body seal ring 1 EPDM
22 Clamp 2 SUS 304
23 Air connection 1 Cupper
24 Air outlet filter 1 Cupper

Technical Date

  • Max. product pressure (depending on valve specifications): 1000kpa(10 bar)
  • Min. product pressure: full vacuum.
  • Temperature range: 10°C to +140°C(EPDM)
  • Air pressure: 5 to 7 bar.

Materials

  • Product wetted steel parts: Steel AISI 316L.
  • Finish: Semi bright.
  • Other steel parts: Stainless steel AISI 304.
  • Plug stem : AISI 316L with hard chrome planted stemm surface.
  • Product wetted seals: EPDM rubber.
  • Other seals: NBR.

Ordering

Please state the following when ordering:

  • Size.
  • Connections if not welding ends.
  • Valve body combination.
  • Actuator function, NC, NO, or A/A.
  • Options.

Specification

Size ID
mm		 OD
mm		 A0
mm		 A1
mm		 A2
mm		 ØD
mm		 C
mm		 E1
mm		 E2
mm		 t
mm		 L/Clamp
mm		 L/SMS Male
mm		 L/IDF Male
mm		 L/RJT Male
mm
25.4 22.1 25.4 202 14 258 60 55.6 50.5 38 1.65 21.5 19 21.5 21.5
38.1 34.7 38.1 287 25 426 87 80 60 68.5 1.65 21.5 23 21.5 21.5
50.8 47.5 50.8 361 25 454 87 92 68.5 68.5 1.65 21.5 23 21.5 21.5
63.5 60.2 63.5 385 25 493 87 108 79 82 1.65 21.5 27 21.5 21.5
76.1 72.9 76.1 453 32 581 133 128 103.5 103.5 1.65 21.5 27 21.5 21.5
101.6 97.6 101.6 481 32 630 133 148 103.5 103.5 2 21.5 30 30 30
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Vacuum Component | The Original Double Seat Valve Manufacturer - EFT

Based in Taiwan, EVERFIT TECHNOLOGY CO., LTD. is a The Original Double Seat Valve | vacuum component supplier for various industries, including semi-conductor, pharmaceutical, bio-technology, cosmetics, food processing and structural engineering. Main product: 316Ti Stainless steel pipe, progressing cavity pump part, pipe tee fitting, valve actuator component, diaphragm valve, ferrule, KF flange, etc.

5,500 square meter plant, cleanroom (class 10,000) and ultra-pure water system to deliver the cleanest pipe fittings. Between the robot arm and adjustment of fixture and jig, EFT is moving toward to becoming a manufacturer of pipe fittings with high technology.

EFT has been offering customers high-quality stainless steel vacuum components since 1976, both with advanced technology and 47 years of experience, EFT ensures each customer's demands are met.

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