Flap Swing Check Valve

  Flap Swing Check Valve   Product Description   1)Material:SS304,304L,316,316L 2)Size:1/4''-2'&DN6-DN50 3)Certificate: API 6D & ISO9001:2000 & CE 4)Full bore pressure temperature rating 200PSI WOG 5)Threaded end:Optional BSPT\NPT\DIN2999 6)Suitable medium:water,gas,air and some corrosive liquid   Features 1.Investment casting body and cap. 2.Screwed bonnet, replaceable seat. 3.Low pressure drop. 4.Temperature Range: -4 to 356 °F 5.Working pressure 200 psi for W.O.G. 6.100% leakage tested at 100 psi air under water 7.Hydrostatic test pressure: 300psi Packaging & Shipping     Company Information   Our Services     Product Photos   Advantages   1. Short in length, installed easily. 2 .Small and light, tightly sealed, easy in maintenance. 3. Two torsion spring are used excreting on each of thee pair valve plates. Which close the plates quickly and automatically. 4. The quick - close action prevent the medium from flowing back and reduce water hammer pressure. 5. Can be installed both horizontally and vertical descending on pipeline. 6. Safe and reliable in operation, high interference - resistance.