Double flange slow-closing check valve

Double flange slow-closing check valve Pressure ratingDNDimension(mm) Weight (Kg) Plange(as reference)NPSDNLDD3D2Diameter of the bore central circle of the boltQuantity of the boltDiameter of the boltLength of the boltinmmRFRJClass150 PN2.0MPa2506010356512120.545/8M161401552 1/2656712273653139.545/8M161501653807313588804152.545/8M161601754100731731081026190.585/8M161701855125861951321278216.083/4M2019020561509822016015213241.583/4M20205220820012727721020325298.583/4M202402551025014633726625439362.0127/8M242702851230018140731030564432.0127/8M243103251435018444835535085476.0121M2732534016400191512405400114540.0161M2734035518450203547455450138578.0161 1/8M3036538020500219604505500161635.0201 1/8M3038540024600222715605600285749.5201 1/4M3340542028700305773700700380795.5403/4M20455_30750305824750746425846.0443/4M20455_32800305878800796560900.0 Usage: Wafer type check valve applies to varies of pipes which size: PN1.0MPa 42.0MPa, Class15 1200mm, NPS1/2 48; Work temperature -196-540°C, prevent medium from flowing back. Use different materials, it can apply to varies medium like: water, gas, oil, acid, base and so on. Main material: Carbon steel, low temperature steel, F51/F53, titanium alloy, INCONEL625, ss304, ss304L, ss316, ss316L, chromium, monel(400/500), 20#alloy, Haney’s alloy and so on. Standard: Design and manufacture: API594, API6D, JB/T8937.Length of structure: API594, API6D, DIN3202, JB/T8937Pressure-Temperature grade: SNSIB16,34, DIN2401, GB/T9124, HG20604, HG20605, SH3406, JB/T74Check and experiment: API598, JB/T9092Pipe flange: JB/T74 90,GB/T9112/9124, HG20592 20635, SH3406, ANSIB16.5, DIN2543 2548, GB/T13042, APIT605, ASMEB16.47 Construction feature: Short construction, is 1/4 1/8 of traditional valve Small volume, light weight, weight is 1/4 1/20 of traditional valve Disc close fast, small pressure of water hammerHorizontal or vertical pipe can apply either, easy installationFlow smoothly, fluid resistance low.Sensitive, good sealing.Short disc space, low impact when closeEntirety construction simple and compact, shape is beautifully.Long service life, high reliability