An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.
1.5" - 48"（DN40 - DN1200）
150LB - 1500LB (PN16 - PN420)
-196℃ - 560℃
Socket welding or inner screwed
Full bore or reduced bore, B.B or W.B or pressure seal bonnet, through way, OS&Y
Oil and gas pipeline
Main Parameter Specification
Inspection and test: API598, JB/T9092;
Design and manufacture: API594, API 6D, JB/TB8937;
Face to face and end to end: API594, API6D, DIN3202, JB/T8937;
Pressure-temperature rating: ASME B16.34, DIN2410, GB/T9124, HG20625, SH3406, JB/T74.
The Advantages & Disadvantages of Soft Seat
1.Good sealing performance , zero leakage can be achieved .
2.Short service life
3.Poor adaptability to temperature
4.Easy to age and wear
Our company is specialized in manufacturing and various valves . To guarantee good quality, we follow ISO9001 standards to inspect our goods. From raw material purchase to pre-shipment inspection, we keep an eye on every step to ensure the satisfaction of our customer on quality.
If you have any questions, please feel free to contact me.your enquiry will get prompt attention.
we will do out best to quote you a more competitive price and short delivery time .