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SQK Duplex Stainless Steel Ball Valve

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MOQ : 5 Units

SQK Duplex Stainless Steel Ball Valve Specification

Channels
2-way / 3-way (available on request)

Caliber
Full Bore / Reduced Bore

Structure
Ball Valve

Pressure
Class 150 to 600

Connection
Flanged, Screwed, Butt Weld

Material
Duplex Stainless Steel

Power
Manual

Media

Temperature of Media
-29C to +180C

Port Size
1/2 to 12 (DN15-DN300)

Flange
ANSI, DIN, JIS Standard

Finish
Natural or As Required

Application
Chemical, Petrochemical, Oil & Gas, Water Treatment, Power Plants

Corrosion Resistance
Excellent for Harsh Environments

Seat Material
PTFE, RTFE, Metal Seated Options

Blow-out Proof Stem
Yes

Design Standard
ASME B16.34, API 6D

Operation
Lever / Gear / Actuator Operated

End Connection Standard
ASME B16.5, EN1092, JIS B2220

Locking Device
Yes (Standard on Manual Type)

Anti-static Device
Provided

Testing Standard
API 598, EN12266

Fire Safe Design
Available (API 607/ISO 10497)

Body Material
ASTM A890/A995 Gr.4A, Gr.5A

SQK Duplex Stainless Steel Ball Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK Duplex Stainless Steel Ball Valve

SQK Duplex Stainless Steel Ball Valve

Size	2" to 56" (50 mm to 1400 mm)
ASME Class	Class 150 to 2500
Design Standard	API 6D

Main Feature

· Trunnion-mounted Ball Valve design complies to API 6D

· Wide portfolio of Side-entry and Top-entry designs

· Fugitive emissions

· Soft and Metal seated valves complies to ISO 15848-1, Class AH and BH

· Fire safe design - to API 607 and API 6FACE Marking

· Meets requirements of Pressure Equipment Directive 2014/68/EU,

· Pneumatic shell test conducted at 1.1 times rated pressure to check shell integrity, when required · Double block and bleed (DBB) feature

· Valves are designed and tested for automatic cavity relief

· Anti-blowout stem design

· Coil springs used for consistent seat loading and lower operating torque

· Lip seals provided for low temperature services

· Primary O ring and Secondary graphite (in 3 stage stem, thrust washer is primary)

· Wide portfolio of Side-entry and Top-entry designs

· Options: Buried service, Cryogenic

· Offered with Electric, Pneumatic and Hydraulic Actuators

· In-house Tests Capabilities

Engineered for Superior Corrosion Resistance

Constructed from duplex stainless steel (ASTM A890/A995 Gr.4A/Gr.5A), the SQK ball valve offers remarkable resistance to corrosion, particularly in aggressive and saline environments. Its material strength and metallurgical properties make it especially suitable for industries like chemical processing, oil & gas, and water treatment where longevity and reliability are crucial.

Compliance with International Standards

The SQK Duplex Stainless Steel Ball Valve meets rigorous global standards, including ASME B16.34 for design, API 6D for valve specification, and is fire safe as per API 607/ISO 10497. It undergoes strict testing protocols like API 598 and EN12266, ensuring robust quality control and dependable operation in critical industrial sectors.

Versatile Operating and Connectivity Options

Whether manually operated by lever or gear, or automated via actuators, the SQK ball valve adapts to various installation requirements. It is available with flanged, screwed, or butt weld connections (to ASME B16.5, EN1092, JIS B2220 standards) and in two-way or three-way configurations, making it a flexible solution for pipelines handling diverse media.

FAQ's of SQK Duplex Stainless Steel Ball Valve:

Q: How does the SQK Duplex Stainless Steel Ball Valve ensure reliability in harsh environments?

A: The SQK valve is manufactured from duplex stainless steel grades ASTM A890/A995 Gr.4A and Gr.5A, providing superior resistance to corrosion, erosion, and stress. Combined with options for PTFE, RTFE, or metal seats, it maintains reliable sealing and long-term performance even in the presence of aggressive chemicals, saltwater, or high temperatures.

Q: What industries commonly use this ball valve, and for what media is it suitable?

A: The SQK ball valve is ideal for chemical, petrochemical, oil & gas, water treatment, and power plant industries. It supports a broad range of media, including water, oil, gas, acids, steam, and various industrial fluids, thanks to its durable duplex stainless steel body and flexible seat material options.

Q: When should I choose a full bore versus a reduced bore configuration?

A: A full bore valve offers minimal flow restriction and is recommended where maximum fluid throughput and low pressure drop are critical. Reduced bore valves are suitable where space or lower flow rates are acceptable, offering cost or weight advantages while maintaining effective shut-off.

Q: Where can the SQK ball valve be installed in a process line, and which connection types are available?

A: SQK ball valves can be installed wherever flow control or shut-off is needed in a process line. They are available with flanged (ANSI, DIN, JIS), screwed, or butt weld end connections, allowing integration into new installations or retrofits across diverse piping standards.

Q: What is the benefit of the valve's fire safe and anti-static design?

A: The fire safe design, compliant with API 607/ISO 10497, ensures the valve maintains a sealing function during fire exposure. The anti-static device minimizes static electric discharge risk, enhancing safety in processes involving flammable media or hazardous environments.

Q: How do I operate or automate the SQK Duplex Stainless Steel Ball Valve?

A: You can manually operate the valve using a lever or gear, which come with a standard locking device. For remote control or automation, electric or pneumatic actuators are available, allowing seamless integration into process control systems.

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