The patented and design registered 400 Series valves represent the leading edge of control valve technology. This diaphragm actuated family of valves blends simple, dependable construction with superior performance for a variety of water control applications in irrigation and waterworks systems.The diaphragm performs equally well under all service conditions, maintains perfect balance without distortion from uneven hydraulic forces, and is totally immune to pressure surges. Sizes: 3/4"-12" in globe or angle patterns. Pressure ranges: 0.5-16 bar - ISO: PN 16i (7-225 psi ANSI: Class 125) Working temperature: up to 80°C (176°F) - water End connections: Steel: Female-thread (NPT or BSP) and grooved for 1-1/2" - 4", or flanged for 1-1/2" - 8" in all known standards Bronze: Female-thread (NPT or BSP) for 3/4", 1", & 1-1/2"

我公司创建于1999年，座落于渤海之滨、美丽的狮城----沧州市，其交通便利，是京沪、石黄、津汕等高速公路的交汇处，京沪铁路直达厂区，和沧州市中化钢材市场为邻，具有得天独厚的地理优势。 公司下属宏瑞钢管厂、宏瑞管件厂，拥有φ219mm－φ508mm高频直缝焊管、φ57mm—φ426mm热轧钢管、φ245mm—φ820mm热扩钢管、φ219mm—φ2540mm壁厚6mm—18mm螺旋钢管多条生产线。加工大口径厚壁卷管、无缝管及各种卷板大小头、焊接三通、弯头、法兰等管件 。经销包钢、成钢、天津、宝钢等各大钢厂，各种厚壁异型无缝钢管（φ108-426*10mm-40mm)及合金管。还可根据用户要求生产各种型号、规格、材质的热轧钢管、热扩钢管、螺旋钢管及管件。 　

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