S Type Pitot Tubes

Telelin, since 1979 specializes in manufacturing of S type Pitot Tubes for measuring Air / Gas, Velocity / Flow in Ducts or Pipe Lines. They are manufactured as per BS / ASTM standard / As per your given drawing or design. Standard Lengths are given below. however, lengths as required by you are also made and supplied. Standard pipe OD is 3/8" i.e. 9.5 mm. Higher OD pipe tubes are also possible. In 3/8" OD pipe impact pressure hole is 1/4" i.e. 6.4 mm and 1 no. static pressure hole is also of 1/4" i.e. 6.4 mm I.D. both holes are kept 180º apart. Standard material of construction is 304 SS Seamless pipes and 304 SS all fittings. However, 316 SS, Brass or any other MOC tubes are possible and can be made and supplied.

304 SS material and 316 SS material, tubes are considered suitable for operating temperature up to 600º C

For higher temperature up to 1200º C, Special alloy pipe tubes are made and supplied.

Pitot Tube Model No. is PT-131 and thereafter no. in below table indicates length. For Example, PT-131-(12") means L Shape pitot tube with 12" i.e. 300 mm. nominal (insertion) length.

Standard process connection is 3/8" BSP (M), adjustable

Standard pressure connections are 1/4" BSP (M) at both ends

Any required adaptors on above 1/4" BSP (M) pressure connections can be supplied on request at extra cost.

For all practical purposes, K factor value is considered 1 for L shape pitot tubes.

For exact K factor value, tubes are required to be tested in low speed wind tunnel and using master manometers and other master instruments with becomes possible only at Indian Institute Of Technology, Powai Mumbai - 400 076. However please note, charges at IIT for calibration i.e. Certifying K factor value are very high, + payable in advance while submitting tubes and time required for calibration is 3 to 4 weeks.

Required adaptors, Connecting tubing (PVC/Silicon/other) can be supplied with pitot tube at extra cost.

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