Shanghai Topkun Machinery Co.,Ltd is based in China and lists industrial valves and pump accessories on Global Trade Plaza. The company offers back pressure valves with diaphragms made of PTFE or EPDM, available in PVC, PVDF, carbon steel, SS304 and SS316L, with an adjustable pressure range of 10 kPa to 31.5 MPa and thread or flange connections. It also supplies pulsation dampeners for metering pumps in diaphragm, bladder and air types, using materials such as PVC, SS304, SS316L, PVDF, PP and carbon steel, with thread, flange or quick-connect options. Buyers can send an enquiry through Global Trade Plaza.