Principle

หนึ่งในผลิตภัณฆ์ใหม่ล่าสุดที่พัฒนาโดย EMCO Controls เป็น Venturi tube ชนิด RH ใช้งานกับ high pressure gas flow
ความถูกต้องถึง ¼%

Construction

Design Standards : ISO/TR 15377, ISO 5167-4, ASME MFC-3M
Sizes : DN 50 — 200, 2” — 8” according to ISO/TR 15377.
Beta (d/D) : 0,4 £ £ 0,75
Pressure rating : PN 40 – 640, 300 – 2500 lbs, ISO PN 50-420.
Material : Carbon steel, AISI 316, Duplex, 254 SMO others on request.
Mounting style : Weld ends according to EN 9692-1 or ANSI B16.25. Flanges acc. to DIN or ANSI B16.5 standards or Grayloc Clamp connections.
Pressure taps : Weld ends Ø 21.3 mm, 26.9 mm, thread connection 3/8″, 1/2″ BSP, 1/2″ NPT, or flanged.
Tapping hole size : 4 mm
Tappings : Single pressure tappings or 2×4 tappings each arranged with an external annular ring to equalise the pressure.
Inlet cone : 10,5°
Outlet cone : 7 — 15 °

Technical Data

Accuracy : 1 % (according to ISO/TR 15377) uncalibrated, ¼ % calibrated
Pressure loss : Depending on outlet cone between 10 – 15 %
Limits for Re. No. : 3 x 10 5 < ReD, 24000 < Re* (Re* = (throat tapping inner d/venturi throat d) x Red.)
Accessories : Shut‑off valves and condensing chambers for steam flow.
The required straight pipe run in front of the venturi tube depends on the disturbance and beta (d/D).

Download : EN