Hind Vactech Scientific Pvt.Ltd.

+91 99588 22058 & +91 97160 14312

Our Product Range

Vactech Vacuum Pumps

Laboratory Cooling Equipments

Laboratory Heating Equipment

Laboratory Testing Equipment

Vacuum Gauges

Lubricating Oils

Fittings & Flanges

Fittings & Flanges

Providing you the best range of Fittings & Flanges such as Buttweld Fittings, ASA Fittings, KF Adapters, Conflat Flange Fittings, LF Hardware, NPT and Hose Fittings and many more items with effective & timely delivery.

Buttweld Fittings
These Buttweld Fittings are designed to be used in conjunctions with full line of ISO-Universal, KF and CF UHV Flanges, and are easily welded to the flanges or each other during on-site installations. All components are made of type 304 stainless steel and are specifically prepared for use in high vacuum process or UHV applications.

Buttweld Fittings are designed to be used in any vacuum applications where minimizing the number of sealed joints is critical.


  • Semiconductor wafer fabrication areas for remote installations and below a raised floor
  • Permanent house vacuum vacuum lines
  • Vacuum utility lines for vacuum fixtures
  • High temperature lines
  • Burn box exhaust lines
  • Common Dimensions:

  • OD: 0.5 in
  • Wall Thickness: 0.065 in (1.65 mm)
  • A: 1.50 in (38.10 mm)
  • B: 0.75 in (19.05 mm)
  • ASA Fittings


  • ASA Flange Size: 4 inch
  • Common Dimensions: A = 9.00", B = 5.00", C = 4.010", D = 3.910", E = 7.500"
  • Number of Bolts = 8
  • Hole size = 0.750"
  • KF Adapters

    These KF Adapters are KF-40 to ASA 1.5 inch vacuum fittings with and O-Ring groove. They are commonly used to make connections between KF and ASA vacuum fittings. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer O-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40 and NW-50, respectively. They are made of corrosive resistant stainless steel.


  • KF Flange Size: NW-40 to ASA 1.5 inch
  • Common Dimensions: A = 1.81" (46mm), B = 1.33" (34mm), C = 5.00" (127mm)
  • Groove ID (O-Ring) = 2.66"
  • Conflat Flange Fittings


  • Conflat Flange (CF) Compression Port 1/4 inch to CF 1-1/3 inch
  • Stainless Steel Fittings
  • CF Flange Size: CF 1-1/3 inch to Compression Port 1/4 inch
  • Common Dimensions: A=Tube Size 1/4 inch
  • LF Hardware


  • LF Hardware Size: NW-63
  • Common Dimensions: A = 2.63" (67mm), B = 0.15" (4mm)
  • NPT and Hose Fittings


  • 1/2 Inch FNPT Fittings on each end
  • FNPT: 1/2 inch Female National Pipe Thread
  • 1 Hose Barb: 1/2 inch ID Rubber Hose
  • 2 Hose Barbs: 1/2 inch ID Rubber Hose
  • 1 Hose Barb 90 Degree Elbow on each end: 1/2 inch ID Rubber Hose
  • Base Plate Fittings

    These stainless steel Base Plate Fitting with Viton O-ring adapts from baseplate to CF 2-1/8 inch Del-Seal Conflat Flange NPT-male, Adapts from baseplate fitting to CF 2-1/8 inches CF flange. Baseplate fitting designed to fit through 1 inch diameter ports on baseplates up to 1 inch thick.


  • CF 2.12 (2 1/8) Inches CF Flange Transition Feedthrough, with Viton O-ring SS
  • CF Flange Size: CF 2-1/8 inches CF flange
  • LF to LF Fittings


  • ISO-NW Flange Cross Size: LF-80 to LF-63
  • Common Dimensions: A= 8.25"(178mm), B= 4.00"(89mm)
  • Common Dimensions: A= 10.50"(267mm), B= 5.00"(127mm)
  • KF to KF Fittings


  • KF to KF Fittings Size: NW-16
  • Common Dimensions: A = 19.69" (500mm)
  • mmon Dimensions: A = 9.84" (250mm)