Z45X Non-Rising Stem Resilient Seated Gate Valve

The Z45X Non-Rising Stem Resilient Seated Gate Valve is a modern,high-performance shut-off valve specially designed for municipal water supply,building plumbing,community water distribution,irrigation and buried pipeline systems.Manufactured in accordance with national and industrial standards,this ductile iron soft seal gate valve features a non-rising stem structure,full rubber encapsulated wedge,zero-leakage bidirectional sealing and low flow resistance,making it one of the most widely adopted valves for clean water and drinking water pipeline projects worldwide.

Different from traditional rising stem gate valves,the non-rising stem(NRS)design allows the valve stem to rotate only without extending outward during operation.This structural advantage greatly saves installation space,avoids stem exposure and effectively protects internal components from external collision,dust,soil corrosion and mechanical damage.It is particularly suitable for installation in narrow valve pits,underground buried pipelines and urban road pipe networks where vertical space is limited.The compact overall structure enables flexible installation and convenient later maintenance without occupying excessive pipeline layout space.

The valve’s core component is an integrally vulcanized EPDM resilient wedge.The full rubber coating eliminates rigid metal-to-metal contact during closing.By utilizing the excellent elastic deformation capability of high-quality EPDM rubber,the valve achieves reliable bidirectional tight shut-off and bubble-tight zero leakage under rated pressure.The elastic sealing surface can automatically compensate minor wear,assembly deviation and pipeline micro-deformation caused by long-term operation,ensuring stable and durable sealing performance throughout the service life.Even when tiny sediment exists in the water medium,the resilient wedge can still fit tightly without leakage,which greatly outperforms conventional metal-seated gate valves.

The valve body and bonnet are made of high-strength ductile iron material with excellent pressure resistance,toughness and anti-fatigue performance.The entire internal and external surface is treated with food-grade fusion-bonded epoxy powder coating.The anti-corrosion coating is non-toxic,harmless and fully compliant with drinking water transportation standards.It effectively resists oxidation,groundwater erosion,acid and alkali soil corrosion,and greatly improves the valve’s adaptability for long-term underground buried working conditions.The flat-bottom full-bore inner cavity avoids sludge accumulation and minimizes flow resistance,ensuring smooth water circulation and low pipeline pressure loss when the valve is fully open.

Equipped with a precision stainless steel stem and multi-layer waterproof packing sealing system,the valve effectively prevents medium penetration and stem leakage.The built-in blowout-proof stem structure enhances operational safety under sudden pipeline pressure fluctuations.Standard pressure ratings include PN10 and PN16,covering most conventional civil and municipal water supply working conditions.The flange connection adopts standard dimensions for easy installation and perfect compatibility with mainstream pipeline systems.

The Z45X resilient seated gate valve supports multiple operation modes,including manual square head,handwheel and bevel gear operation.It can also be equipped with electric actuators to realize automatic remote control and intelligent pipeline management,meeting the needs of large-scale water supply systems and smart city pipe network projects.For deeply buried pipelines,customized extension spindles are available to realize ground surface opening and closing without digging valve pits,greatly reducing construction difficulty and engineering cost.

It is strictly prohibited to use this gate valve for flow throttling.The valve must only operate at fully open or fully closed status.Partial opening will cause high-speed water flow scouring,cavitation and vibration,which will damage the rubber wedge and reduce sealing performance.All finished products undergo strict shell hydrostatic testing and seat tightness testing before delivery to ensure stable quality and reliable field performance.

With the advantages of compact structure,zero leakage,low operation torque,strong anti-corrosion ability and maintenance-free performance,the Z45X Non-Rising Stem Resilient Seated Gate Valve has become a preferred solution for municipal waterworks,residential communities,industrial water supply,park irrigation and buried pipe network projects.It provides stable,safe and long-term fluid shut-off protection for global water pipeline systems.