Item description: The manufacture of LGL venturi tube flowmeter series is up to Chinese National Standard GB/T2624-93 and checking is up to JJG640-94. Classic venturi tube has the lowest requirement of upstream and downstream straight pipe and the lowest pressure loss. Features: stable performance and easy maintaining. It is widely used in the industries like oil, chemical, power, metallurgy, etc.

 Application:

1. DN: 50mm ≤ DN ≤ 1200mm, needing be advised when larger than 1200mm

Coarse casting contraction section: 100mm ≤ DN ≤ 800mm

Machining contraction section: 50mm ≤ DN ≤ 250mm

Coarse weld contraction section: 200mm ≤ DN ≤ 1200mm

2.Throttling aperture ratio β: 0.3 ≤ β ≤ 0.75

Coarse casting contraction section: 0.3 ≤ β ≤ 0.75

Machining contraction section: 0.4 ≤ β ≤ 0.75

Coarse weld contraction section: 0.4 ≤ β ≤ 0.7

3. Reynolds range: 2×105 ≤ ReD ≤ 2×106

Coarse casting contraction section: 2×105 ≤ ReD ≤ 2×106

Machining contraction section: 2×105 ≤ ReD ≤ 2×106

Coarse weld contraction section: 2×105 ≤ ReD ≤ 2×106

4. Accuracy: First grade