SQK Welded Bonnet Gate Valve

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MOQ : 5 Units

SQK Welded Bonnet Gate Valve Specification

Connection
Butt Welded / Socket Welded

Structure
Gate

Sealing
Metal to Metal / Soft Seated

Size
1/2 to 2 (DN15 - DN50)

Material
Forged Steel / Carbon Steel / Alloy Steel

Type
Welded Bonnet Gate Valve

Power Source
Manual

Pressure
Class 150 - 2500

Media
Oil, Gas, Water, Steam

Working Temperature
-29C to 425C

Port Size
Customizable as per requirement

Surface
Corrosion Resistant Coated

Shape
Straight Pattern

End Connection
Socket Welded, Butt Welded

Design
Rising Stem, Outside Screw & Yoke (OS&Y)

Standard
API 602, ASME B16.34

Body Cover Joint
Welded Bonnet

Application
Petrochemical, Oil & Gas Industries, Power Plants

Test Standard
API 598

Operation
Handwheel

Trim Material
13Cr / F6a / Stellited

Face to Face
ASME B16.10

Bonnet
Sealed Welded Construction

SQK Welded Bonnet Gate Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK Welded Bonnet Gate Valve

SQK Welded Bonnet Gate Valve

The API 600 Gate Valves is exceptionally sturdy, rugged, and durable, with a reputation for quality, integrity, and long service.

They are designed for tight sealing and ease of operation. The valves are available flanged & butt-weld ends in pressure rating from ASME Class 150 to Class 2500, and in a variety of materials of construction.

Gate Valves are of flexible wedge design, outside screw and yoke, and bolted-bonnet construction. The valves conform to API 600.

Main features :

Bolted body-bonnet design, seal welded & Valves with pressure seal bonnet
Bellows-sealed Gate and Globe valves available
Bolted body-bonnet joints provided with spiral-wound stainless steel gasket and graphite
filler for maximum protection against leaks
Die-formed graphite inner packing rings and braided graphite end rings with Inconel wire
reinforcement and corrosion inhibitor
T-head stem-disc connection of gate valve fully meets strength requirements of API 602 and API 598
Rolled ACME thread on stem for smooth operation
Tapered shoulder on the stem for back seating
Self-aligning type gland assembly with stud-and-nut tightening
Integral hard-faced body seat for globe and check valves
Spring-loaded disc on check valves suitable for no horizontal applications too
Gate and globe valves can be offered with electrical actuators
Austenitic SS forging for body and bonnet of Cryogenic valves, resulting in excellent impact strength, minimal heat loss and resistance to corrosion
Valves can be offered to NACE MR-0175 and other special NACE requirements

Engineered for Reliability in Industrial Applications

The SQK Welded Bonnet Gate Valve delivers dependable performance even under severe conditions found in power plants and petrochemical settings. Its welded bonnet construction minimizes leak paths and ensures long-term sealing. The corrosion-resistant exterior and quality materials like forged or alloy steel make it ideal for challenging environments.

Precision Operation and Easy Maintenance

With a rising stem, outside screw & yoke (OS&Y) design, and handwheel operation, this gate valve allows straightforward visual verification of valve position. Maintenance is further reduced by the welded bonnet structure, which eliminates gland leaks and provides a more secure enclosure.

Versatility and Customization

Available with socket welded or butt welded end connections, and a range of port sizes (1/2" to 2", DN15-DN50), the valve fits diverse system requirements. You can choose the trim and sealing options (metal-to-metal or soft seated) according to your application for maximum compatibility and service life.

FAQ's of SQK Welded Bonnet Gate Valve:

Q: How is the SQK Welded Bonnet Gate Valve typically used in industrial settings?

A: This valve is mainly deployed in petrochemical, oil & gas industries, and power plants. It controls the flow of oil, gas, water, and steam under varied pressure and temperature conditions, providing reliable shut-off capabilities in both critical and general service pipelines.

Q: What benefits does the welded bonnet design provide?

A: The welded bonnet construction ensures a superior seal, reducing the risk of leakage compared to bolted designs. This makes the valve more suitable for high-pressure or hazardous media, improving safety and minimizing maintenance requirements.

Q: When should I opt for a metal-to-metal versus a soft-seated seal?

A: Metal-to-metal sealing is recommended for high-temperature or abrasive media since it offers greater durability and resistance to wear. Soft-seated seals are better for applications where tight shut-off and lower torque requirements are a priority.

Q: Where can this gate valve be installed?

A: Its design complies with ASME and API standards, making it suitable for global industrial installations, including refineries, chemical plants, power stations, and any environment requiring a robust gate valve within the temperature and pressure range specified.

Q: What is the process for customizing the port size?

A: Port size can be tailored as per your pipeline requirements. During specification, you can consult with the manufacturer or supplier, providing your dimensional and operational needs to ensure compatibility with your system.

Q: How should the SQK Gate Valve be operated and maintained?

A: Operated manually via a handwheel, the valve requires standard valve maintenance practices such as periodic stem lubrication and inspection for surface corrosion. Thanks to the welded bonnet, maintenance is less frequent and more straightforward.

Q: What are the main advantages of using this valve in demanding applications?

A: Its corrosion-resistant coating, welded bonnet for leak-proof reliability, compatibility with high pressures and temperatures, and flexible configuration make it an optimal choice for critical industrial environments where performance and longevity are paramount.

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