SQK A217 WC9 Cast Alloy Steel Piston Valve

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SQK A217 WC9 Cast Alloy Steel Piston Valve

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MOQ : 5 Units

SQK A217 WC9 Cast Alloy Steel Piston Valve Specification

Structure
Piston type, Flanged Ends

Material
A217 WC9 Cast Alloy Steel

Power
Manual

Pressure
Class 150, 300, 600

Media
Water, Steam, Oil, Gas

Working Temperature
Up to 600C

Port Size
15 mm to 300 mm

Surface
Shot blasted, Painted

Shape
Straight, Globe Type

Application
Steam, Oil, Gas, Chemical Industries

Trim Material
13Cr / F11 or as per requirement

Leakage Class
Class VI (Bubble Tight)

Packing Material
Graphite or PTFE

Body Material
ASTM A217 WC9

Body Test Pressure
1.5 x Working Pressure

Gland Type
Self-aligning gland

Bonnet Type
Bolted Bonnet

Face to Face Dimension
ASME B16.10

Operation
Handwheel Operated

Design Standard
BS 5150 / BS 1868 / API 602

Flange Standard
ASME B16.5

End Connection
Flanged or Butt Welded

Seat Test Pressure
1.1 x Working Pressure

SQK A217 WC9 Cast Alloy Steel Piston Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK A217 WC9 Cast Alloy Steel Piston Valve

SQK A217 WC9 Cast Alloy Steel Piston Valve

Full port forged steel isolation valves with a maximum operating pressure of 1973 psig/136 Barg and a maximum operating temperature of 800oF/427oC. The burnished piston and metal reinforced graphite rings provide leak-proof shut off and allow Piston Valves to be operated at higher temperatures, while also extending operating life.

Piston Valves are available in Socket Weld, BSPT, and NPT end connections. Flanged ends can be supplied upon request. Piston Valves are ideal for saturated and superheated steam, and hot water applications.

Piston Valves Feature :

Leak-proof isolation
Sizes from 1/2"/15mm to 1-1/2"/40mm
Choice of socket weld or threaded connections
Compatible with ASME
Resistant to cavitation
All sealing valve components may be easily replaced in-line
Long-term operation. Piston valve design ensures actuation even after many years without operation
Fire-proof performance

Design Standards :

ASME (B16.34, B16.5)
Inspection and testing (API 598)
Leak test (ANSI/FCI 70-2 )
Fire test (API SPEC 6FA : 1999

Design features of Piston Valves :

Materials of Construction

Body and Bonnet ASTM A105N / A350 LF2 Forged Steel
Spindle SS T304
Ring Valve SS T3016 + Graphite
Piston SS 17-4 PH
Spacer CA 40
Belleville Washer ASTM A231
Name Plate SS 304

Engineered for Stringent Standards

The SQK A217 piston valve is manufactured in strict accordance with BS 5150, BS 1868, and API 602 standards, ensuring international compliance and reliability. Its design is further backed by shot blasting and painting for superior surface protection. The valve meets ASME B16.10 (face-to-face dimensions) and ASME B16.5 (flange standard), making it compatible with a wide range of piping systems found in industrial environments.

Versatile Application and Optimal Performance

Featuring a straight, globe type structure, this valve excels in controlling steam, oil, gas, and chemical flows. The robust ASTM A217 WC9 body and 13Cr/F11 trim guarantee excellent resistance to high temperatures (up to 600C) and pressures (Class 150, 300, 600). Its bubble-tight (Class VI) leakage prevention makes it suitable for critical applications, minimizing loss and enhancing operational safety across a variety of industries.

FAQs of SQK A217 WC9 Cast Alloy Steel Piston Valve:

Q: How is the SQK A217 WC9 Cast Alloy Steel Piston Valve installed?

A: The valve is designed for both flanged and butt welded end connections, allowing for straightforward installation into existing pipework that conforms to ASME B16.5 flange standards or compatible butt weld systems. Professional installation following the specific design standards and safety protocols is recommended.

Q: What benefits does the Class VI leakage rating provide?

A: A Class VI (bubble tight) leakage rating ensures near-zero leakage past the valve seat, which is especially beneficial in applications where media containment, process efficiency, and safety are critical, such as in steam, oil, gas, and chemical processes.

Q: When should I choose the SQK A217 WC9 piston valve over other valve types?

A: This valve is ideal for high-pressure, high-temperature applications (up to 600C and Class 600 pressure) where precise shutoff and minimal leakage are essential. Its robust construction and compliance with international standards make it suited for demanding steam, oil, gas, and chemical industry operations.

Q: Where can the SQK A217 WC9 valve be effectively used?

A: The valve can be used in a wide array of industries, including steam generation, oil and gas processing, chemical manufacturing, and water services. Its durability and sealing capabilities make it suitable for both utility and process-critical environments.

Q: What materials are used in the construction of this valve?

A: The body is made from ASTM A217 WC9 cast alloy steel, while the trim uses 13Cr or F11 as standard, with options for different requirements. Packing materials offered are graphite or PTFE for durability and temperature resistance.

Q: How is operation carried out for this piston valve?

A: The valve is operated manually using a handwheel, which provides precise control over the media flow. This simple operation method ensures ease of use, maintenance, and reliability in diverse industrial settings.

Q: What is the process for testing and quality assurance on this valve?

A: Each valve undergoes strict body and seat test pressures1.5 times the working pressure for the body and 1.1 times for the seat. These tests ensure the valve meets the required safety and performance standards before reaching the end user.

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