Non Rising Stem Gate Valve

Non Rising Stem Gate Valve from Speciality Valve.

Non Rising Stem Gate Valve Manufacturer in India

A non rising stem gate valve is designed for isolation where limited overhead clearance makes a vertically moving stem impractical. Speciality Valve manufactures and offers non-rising stem gate valves for buried pipelines, water transmission, utility isolation and confined piping installations. Valve configuration can be matched to the required size, pressure class, body material, seating arrangement and end connection.

Non-Rising Stem Gate Valve Technical Specifications:

Parameter	Typical Configuration
Valve type	Non-rising stem gate valve
Stem arrangement	Non-rising stem
Gate design	Solid wedge, flexible wedge or specified design
Size	Product-specific
Pressure class	Class 150 to Class 2500, where applicable
Operation	Handwheel, gear or actuator
End connections	Flanged, threaded, socket-weld or butt-weld, depending on design
Seating	Metal or resilient seating, depending on valve construction

Material Options:

Material selection depends on pressure, temperature, fluid compatibility and environmental conditions.

Material Family	Typical Service Consideration
Carbon steel	General industrial and hydrocarbon isolation
Low-temperature carbon steel	Low-temperature pressure service
Stainless steel	Corrosive or chemically compatible media
Alloy steel	Elevated-temperature service
Duplex stainless steel	Selected chloride-containing environments
Ductile iron	Water and utility applications where applicable

Non-Rising Stem Gate Valve Grades:

Grade	Material Classification
ASTM A216 WCB	Cast carbon steel
ASTM A216 WCC	Cast carbon steel
ASTM A352 LCB	Low-temperature carbon steel
ASTM A352 LCC	Low-temperature carbon steel
ASTM A351 CF8	Austenitic stainless steel
ASTM A351 CF8M	Austenitic stainless steel
ASTM A351 CF3M	Austenitic stainless steel
ASTM A995 4A	Duplex stainless steel

The applicable grade depends on the valve body construction and service conditions.

Gate and Seating Choices:

Configuration	Service Consideration
Solid wedge	General isolation duties
Flexible wedge	Suitable for thermal and pressure variation
Metal seated	Higher-temperature and demanding isolation
Resilient seated	Compatible water and utility service
Renewable seat	Allows seat replacement in applicable designs

Pressure Classes and Connections:

Item	Applicable Configuration
Pressure classes	Class 150, 300, 600, 900, 1500 and 2500 where applicable
Flanged ends	ASME B16.5 / B16.47 where applicable
Butt-weld ends	ASME B16.25
Face-to-face dimensions	ASME B16.10
Design requirements	API 600, API 602 or applicable specification

Suitable Applications:

Underground water transmission
Irrigation pipeline isolation
Fire-water distribution
Raw-water pumping systems
Utility pipeline isolation
Valve chambers with restricted headroom
Compatible hydrocarbon pipeline sections
Industrial water networks

Inspection and Documentation:

Inspection may include dimensional verification, material identification, shell testing, seat closure testing and operational checks. Depending on project requirements, documentation can include material certificates, pressure-test reports, drawings and inspection records.

For project evaluation, the line size, medium, pressure, temperature, installation arrangement and connection type provide the key information needed to establish the appropriate non-rising stem gate valve configuration.