In municipal water supply, wastewater treatment, and industrial piping systems, valve sealing reliability and operational lifespan directly affect network safety and efficiency. TianyiSuns presents its F5 Resilient Seated Gate Valve, manufactured in accordance with DIN 3352 standards. Featuring a ductile iron body and a fully rubber-encapsulated wedge, this valve delivers reliable isolation and regulation for water and industrial pipelines worldwide.
Product Positioning: F5 Standard & Resilient Seat Technology
F5 is a face-to-face dimension series designation under the German DIN 3202 standard, specifying the structural length of flanged gate valves. TianyiSuns F5 gate valves strictly comply with this standard, ensuring interchangeability with existing piping systems for easy replacement and installation.
The product uses Resilient Seat technology-the wedge consists of a ductile iron core fully encapsulated in EPDM or NBR rubber, achieving a tight seal through the rubber's elastic deformation. Compared with traditional metal-seated gate valves, the resilient seat maintains zero leakage even at low pressure and offers greater tolerance to pipeline impurities and particles.
Core Structure & Materials
Both the body and bonnet of the TianyiSuns F5 gate valve are cast from ductile iron, offering superior strength and toughness compared to grey iron. The stem is made of stainless steel with precision-machined surfaces, ensuring smooth long-term operation and corrosion resistance. The stem nut is manufactured from brass, providing excellent self-lubricating properties.
The sealing system features a multi-layered protective design: the stem area is equipped with a dust ring and multiple O-rings, effectively preventing external contaminants from entering and internal media from leaking. The interior and exterior surfaces of the valve body are coated with non-toxic epoxy resin electrostatic spray, meeting coating thickness requirements and suitable for potable water pipelines without contaminating the medium.
Technical Specifications Overview
TianyiSuns F5 gate valves cover a common size range from DN50 to DN300, with nominal pressure ratings of PN10 and PN16. Body strength test pressures are 1.5 MPa (PN10) and 2.4 MPa (PN16), respectively, while seal test pressures correspond to 1.1 MPa and 1.76 MPa, ensuring adequate safety margins under rated operating conditions. Applicable media include water, oil, and gas, with a working temperature range of 0°C to 80°C. The valve features a non-rising stem design, suitable for space-constrained buried or chamber installations.
Application Scenarios
F5 resilient seated gate valves are widely used in potable water transmission and distribution networks, wastewater treatment plants, building water supply and drainage systems, fire protection pipelines, and piping systems in the petroleum, chemical, food, pharmaceutical, textile, and power industries. The full-bore design offers minimal flow resistance, making it ideal for isolation duty requiring fully open or fully closed operation.
Quality Assurance & Global Supply
TianyiSuns is certified under the ISO 9001 Quality Management System. Products are manufactured in accordance with DIN 3352 and other international standards, with material certificates and inspection reports available upon request. The company's export business covers the Middle East, Africa, Southeast Asia, and Europe, providing flexible trade terms and customized packaging services for global distributors and large-scale water utility projects.
About TianyiSuns
TianyiSuns Pipe & Fittings Co., Ltd. is a professional manufacturer and exporter of piping system products, specializing in ductile iron pipes, pipe fittings, gate valves, butterfly valves, check valves, flanges, manhole covers, gully gratings, and more, serving water utility and infrastructure projects worldwide.
