Gate Valve With Rising Stem
Gate Valve With Rising Stem

Gate Valve with Rising Stem

Name: China Gate Valve with Rising Stem Manufacturers, Suppliers, Factory - Customized Service - Keylion
Brand: Keylion
SKU: 303920398

Flanged OS&Y Gate Valve is the preferred choice for mainline isolation in critical water infrastructure. Featuring durable ductile iron construction and flanged ends for secure connection, it excels in municipal water distribution, fire protection systems, and building services. The design ensures full, unobstructed water flow and bidirectional sealing, complying with international standards for performance in clean and wastewater services.

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Product Introduction

Designed for precision,Keylion® gate valve with rising stem excels in municipal water systems, factory pipelines, and drainage applications. Meeting global standards (GB, BS, ANSI), it supports 50mm to 300mm bore sizes with pressure capacities of 1.0Mpa, 1.6Mpa, and 2.5Mpa. The high-strength nodular iron body ensures longevity, while the rising handwheel mechanism provides effortless adjustment. Perfect for large-scale infrastructure projects,gate valve with rising stem offers dependable shutoff and low-friction operation for seamless fluid management.

Product Parameter

Brand:Keylion®/OEM

Product Name:Gate Valve With Rising Stem/flange outside screw & yoke gate valve

Connection:Flange End

Main Material:Ductile Iron

Standard:ANSI/GB/BS

Size Available:2"-12"/DN50-DN300

Working Pressure:1.6MPA

Color:Red/Blue/Customized

Working Temperature:0℃ to 80℃(32℉ to 176℉)

Surface Finishing:Epoxy Paint Coating

Application Medium:Water

Warranty:3 Year

Packing:Export Wooden Carton

Product Material

Part	Material
Part	Standard	Optional
Body	Ductile Iron QT450-10
Stem	2CR13 Stainless Steel	201 Stainless Steel
Bonnet	Ductile Iron QT450-10
Handwheel	Ductile Iron QT450-10
Disc	Ductile Iron QT450-10,Covered By EPDM
Nut	Ductile Iron	Brass
Bolt	Ductile Iron	Brass
O-Ring	NBR	EPDM

FAQ

Q1: Rising stem vs. non-rising stem valves – which to choose?

Aspect	Rising Stem	Non-Rising Stem
Visibility	Stem moves up/down (easy status check)	Stem hidden, compact design
Space Required	Needs vertical clearance	Fits tight spaces (e.g., tunnels)
Durability	Exposed stem may corrode outdoors	Protected stem for harsh environments
Common Uses	Water treatment plants, factories	Underground pipelines, ships

Q2：Why avoid throttling with gate valves?

Three critical risks:
Seat Erosion: Partially open gates create high-velocity jets that erode seats
Vibration Damage: Unstable flow causes stem fatigue and flange bolt loosening
Cavitation: Pressure drops vaporize liquids – implosions pit metal surfaces
Solution: Pair with globe valves for flow control – gate valves are ON/OFF devices

Q3：Why do engineers pair these with butterfly valves?

Complementary roles:
Rising stem gate: Reliable isolation (zero-leak shutoff)
Butterfly valve: Precise flow control
Example: Water treatment plants use gates for pump isolation + butterflies for filter flow regulation

Q4: What vertical installation mistakes cause premature failure?

Top 3 errors:
✘ Downward-facing stems collecting debris
✘ Insupported pipe weight stressing valve body
✘ Missing drip rings causing water ingress on stem threads

Q5: What engineering features prevent stem jamming in gritty environments?

Three-tier defense:
① Bronze stem nuts self-lubricate under friction
② Stainless steel stems resist particle embedding
③ Optional stem boots shield threads in coal/dust applications

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