By Qu Venturi, tube 
 LGW type classical (classical) Venturi tube, also known as the classical Venturi tube, also commonly known as the standard Venturi tube, in line with the standards of ISO5167 or GB/T2624-93. 
 Features 
 ◆ the organization is simple, durable, stable performance. 
 ◆ No need for calibration. 
 ◆ pressure loss, and energy conservation. 
 ◆ can not be easily stolen goods clogging impurities, measurable gas, the raw water of waterworks. 
 ◆ Mounting size is relatively large, inconvenient transportation. 
 Technical parameters 
 ◆ Nominal pressure: ≦ 4Mpa 
 ◆ Nominal diameter: 50 ~ 2600mm 
 Reynolds number range: 2 × 10 ∧ 5 ~ 2 × 10 ∧ 6 
 Discharge coefficient uncertainty: ± 0.7% ~ ± 1.5% 
 Company Name: Henan Airlines Traffic Instrument Co., Ltd. 
 Address: Grace Avenue, Xinxiang City, Henan Province, the western part of high-Bay northbound 
 Tel: 0373-2678088 0373-2677766 
 Fax: 0373-2678899 
 Contact: Yang Yang 
 Phone: 13673735363 
 Post Code: 453 003 
 E-mail: hnxhyb@163.com 
 Website: http://www.hnxhyb.com.cn 
 Business QQ: 1596920346