Non-Rising Stem Gate Valve

The Non-Rising Stem Gate Valve is designed for reliable on/off isolation in applications where vertical installation space is limited. Featuring an internal stem design, the stem does not rise during operation, making it ideal for underground pipelines, compact equipment, and confined installations. Precision-machined wedge and seat surfaces provide bubble-tight shutoff, low operating torque, and long service life.

Specification of Non-Rising Stem Gate Valve

Parameter	Value
Size Range	3/8" – 48" (DN10-DN1200)
Pressure Rating	CLASS 150-CLASS 2500 (PN10-PN420)
Body Material	WCB, WCC, LCB, WC6, WC9, CF8, CF8M, CF3, CF3M, Duplex Stainless Steel, Alloy Steel
Bonnet Type	Bolted Bonnet, Pressure Seal Bonnet
Stem Design	Non-Rising Stem (Inside Screw)
Disc Type	Flexible Wedge, Solid Wedge, Parallel Slide (Optional)
Seat Material	Integral Seat, 13Cr, Stellite Overlay, Stainless Steel
End Connection	Flanged, Butt Weld, Socket Weld
Face-to-Face Standard	ASME B16.10, EN 558
Flange Standard	ASME B16.5, ASME B16.47, EN 1092-1
Butt Weld Standard	ASME B16.25
Design Standard	API 600, API 6D, ASME B16.34, BS 1414
Inspection & Testing	API 598, ISO 5208
Fire Safe Design	API 607 / API 6FA (Optional)
Fugitive Emission	ISO 15848 / API 624 (Optional)
Operation	Handwheel, Gear Operator, Electric Actuator, Pneumatic Actuator
Temperature Range	-160 ℃ to 595 ℃
Suitable Media	Water, Oil, Natural Gas, Steam, Petrochemical Fluids, Chemicals

Features of Non-Rising Stem Gate Valve

Compact Non-Rising Stem ConstructionThe stem remains inside the valve body during operation, eliminating vertical stem travel and making the valve ideal for installations with restricted overhead clea...

Compact Non-Rising Stem Construction

The stem remains inside the valve body during operation, eliminating vertical stem travel and making the valve ideal for installations with restricted overhead clearance.

Ideal for Underground Installation

The enclosed stem design allows the valve to be installed in underground pipelines, valve chambers, and buried service applications where rising stem valves are impractical.

Constant Installation Height

Unlike rising stem gate valves, the overall valve height remains unchanged during opening and closing, simplifying installation in compact equipment rooms and confined spaces.

Protected Internal Stem

Because the stem is enclosed within the valve body, it is less exposed to mechanical damage, accidental impact, or harsh external environments, improving operational reliability.

Reduced Space Requirements

The non-rising stem configuration minimizes the installation envelope, making it well suited for skid-mounted systems, underground utility networks, and space-constrained piping layouts.

Internal Thread Stem Mechanism

The stem engages directly with the wedge inside the valve body, providing reliable gate movement while maintaining a compact external profile.

Suitable for Buried and Inaccessible Pipelines

Commonly used in municipal water distribution and buried industrial pipelines where above-ground stem movement is undesirable.

Position Indication Through Stem Rotation

Valve operation is indicated by stem rotation rather than stem travel, making the design compact while allowing position indication through handwheel direction or optional position indicators.

SAVVY IMPORT AND EXPORT CO., LTD.

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Room 1104, Poly Center Office Building, Lucheng District, Wenzhou City, Zhejiang Province, China

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