For over ten years Dipper Valve Company’s manufacturers and design engineers involved in the localizing of manufacturing check valves for long distance transporting pipelines have used more than ten unique patent technologies to produce check valves applied to long distance gas and oil transporting pipelines. We have a successful experience in manufacturing axial flow check valve, piggable check valve, cryogenic check valve as well as slurry check valves. We offer a wide range of pipeline valves for natural gas, crude oil, LNG and slurry pipelines. Our products ensure the long distance transmission pipeline safe and reliable running, which in its turn drives forcefully the localizing of manufacturing check valves for long distance transmission pipelines.
Nominal diameter range: 1/2”~ 60”
Pressure rating: class 150~class 2500
Product features: ①National Energy Bureau and CNPC “Oil And Gas Pipe Key Equipment Localizing Manufacturing Project” product; ②National patent sealing technology, zero leakage reliable sealing; ③Single-direction back flow prevention, pump or compressor protection; ④High flow capacity, low pressure drop, reduced pump or compressor energy consumption.
Nominal diameter: 1/2” ~ 20”
Pressure rating: class 150 ~ class 900
Actuator: N/A
Product Features: ①National utility model patent; ②-196℃ cryogenic treatment, no phase transformation and deformation on valve body and key components; ③Cryogenic action test and cryogenic test under -196℃, reliable sealing performance; ④Sichuan best product.
Nominal diameter: 8” ~ 48”
Pressure rating: class 150 ~ class 1500
Actuator: manual
Product features: ①Single-direction backflow prevention, pump or compressor protection; ②Piggable check valve; ③Quick closing + slow movement back to seat, preventing large quantity backflow and avoiding water hammer effect at the same time; ④Counter balance, manually operated.
