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Backpressure valves of the WKP are intended for cut - off of the return flow of the environment at interruption in supply of oil products in technology pipelines.
Backpressure valves are installed on bulk devices of oil depots and gas station with working pressure from 1 MPa (10kg/cm2) to 2,5 MPas (25 kg/cm2).
On resistance to influence of climatic factors of external environment backpressure valves are manufactured performed by Wu Yi by UHL, category of placement 1 in accordance with GOST 15150 - 69.
Example of designation at the order: The WKP - 150 UHL1 TU 3689 - 018 - 10524112 - 2002, where: 150 - conditional pass, UHL1 - a climatic modification
TU 3689 - 018 - 10524112 - 2002.
Permission of Rostekhnadzor to application No. PPC 00 - 24373 of 27.04.2007
| Name of parameters | WKP - 50 | WKP - 80 | WKP - 100 | WKP - 150 | WKP - 200 |
| Conditional pass of DN | 50 | 80 | 100 | 150 | 200 |
| Conditional pressure Ru, kg/cm2 | 10 | 10 | 25 | 25 | 40 |
| Weight, kg, no more | 2,8 | 5,0 | 8,2 | 12,6 | 18 |
