Description
The non-return valve is designed to prevent backflow of the transported medium in process pipelines and to ensure the safety of the equipment at pumping stations.
Connection: flanged / welded
Working environment - water, oil, oil products
The reverse valves are produced according to ST 1836-1917-01 -AO-09- 2013
Working position - on the horizontal pipeline with the cover facing up; on the vertical pipeline - in the direction of the arrow on the housing upwards
Climatic modification: У, ХЛ, УХЛ according to GOST 15150
The non-return valve is designed for outdoor use in the following macro-climatic regions with the allocation category 1 according to GOST 15150:
with a temperate climate - performance of U (N);
with a cold climate - the execution of CL (F);
with a temperate and cold climate - the performance of UHL (NF)
MATERIALS OF MAIN DETAILS:
Part name / Material in execution: У - УХЛ, ХЛ
Cover / 20L GOST 977-88 - 20L GOST 977-88
Lever / 20L GOST 977-88 - 20L GOST 977-88
Clap / 20L GOST 977-88 - 20L GOST 977-88
Saddle / 20L GOST 977-8875 - 20L GOST 977-88
Axle / 20X13 GOST 5949-75 - 14X17H2 GOST 5949-75
Hairpin, nut / 38ХА GOST 4543-71 - 40ХА GOST 4543-71
Characteristics
- Probability of failure-free operation for one cycle "open-close" for other valves
- not less than 0.999
- MTBF for valves DN 40, 50,80,100
- 1800 cycles
- Assigned service life for other valves
- not less than 30 years
- Service life of removable parts and accessories for other valves
- at least 15 years
- Full assigned resource for DN 40, 50,80,100 valves
- 6000 cycles
- Full assigned service life for DN 40, 50,80,100 valves
- 12 years
- MTBF for unassigned service life for other valves
- not less than 750 cycles
- Warranty period
- 18 months from the date of commissioning, but not more than 20 months from the date of shipment from the manufacturer
Similar products
WEDGE GATE VALVES WITH RISING SPINDLE 1.6 MPa - Shut-off valves
- Vendor code
- 6317
Price Price on demand











