Stainless steel 316, compact design, high-pressure check valve H-400 & H-400HP series. A wide variety of packing materials available.
The H-400 series features a compact design for instrumentation panels and systems, with precise operating points. The H-400 check valve (non-return valve) is normally closed, and when the differential pressure between the inlet and outlet sides exceeds the spring's set pressure, the poppet moves in the opposite direction of the spring's pressing direction, opening the flow path within the valve to allow fluid to flow. Additionally, we offer a wide variety of packing materials to accommodate various fluids. To meet customer applications, we also provide high-pressure types, one-piece types, and cracking pressure adjustment types. With a simple mechanism and easy installation, it protects equipment in the process line during abnormal conditions. <Features> - Available in standard type (H-400), high-pressure type (H-400HP), compact one-piece type (H-400OP), compact one-piece pressure adjustment type (H-400OPA), and pressure adjustment type (H-400A) - A wide range of cracking pressures available - A variety of sealing materials available - A variety of connections available - Spring kits and O-ring kits available *For more details, please download the PDF or feel free to contact us.
Inquire About This Product
basic information
Pressure Resistance (Max): 20MPa (H-400 Series) 41MPa (H-400HP Series) Temperature Resistance (Max): -23 to 190℃ (O-Ring: Full Fluorocarbon FKM) Connection: LET-LOK fittings, NPT threads, PT threads, etc. Size: 1/4" to 1" Cracking Pressure: 1/3PSI, 1PSI, 3PSI, 5PSI, 10PSI, 25PSI Packing Material: Full Fluorocarbon FKM (standard) Nab N EPDM Polychloroprene *For more details, please download the PDF or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
When abnormal back pressure occurs in the process line, regardless of whether it is gas or liquid, the valve closes to protect equipment such as pumps.
catalog（1）
Download All Catalogs
Company information
Ham-Let, headquartered in Israel, has local subsidiaries in the United States, Canada, the United Kingdom, Germany, France, the Netherlands, Russia, Singapore, and Japan. The company specializes in fittings, process valves, manifolds, ultra-clean diaphragm valves, high-purity fittings, pressure gauges, flexible hoses, filters, relief valves, sampling cylinders, flanges, and more, serving various industries such as energy, oil, gas, turbines, chemicals, petrochemicals, natural gas, electronics, and analysis. It is a global company that actively promotes M&A around the world to increase its workforce and expand its business. Ham-Let Motoyama Japan, the Japanese branch, primarily develops its business in the electronics sector through direct sales and approximately 60 agents and distributors established nationwide. The company's flagship products for the electronics sector, ultra-clean diaphragm valves and high-purity fittings, are supplied from the headquarters factory in Israel via air freight twice a week, ensuring supply and inventory levels, and are shipped daily nationwide from the logistics center in Tokyo. In recent years, the company has been focusing more on general industry and plant engineering by leveraging the resources of its group companies.
