SQK A182 F316L Stainless Steel Piston Valve

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SQK A182 F316L Stainless Steel Piston Valve

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MOQ : 5 Units

SQK A182 F316L Stainless Steel Piston Valve Specification

Structure
Piston Type

Material
A182 F316L Stainless Steel

Power
Manual

Pressure
Up to 40 Bar

Media
Water, Oil, Gas, Steam

Working Temperature
-29C to +200C

Port Size
1/2 inch to 8 inch

Surface
Polished / Satin Finish

Shape
Straight / Cylindrical

Application
Oil & Gas, Petrochemical, Chemical, Power, Steam, Water, Industrial Pipelines

Seat Type
Renewable PTFE / Stellited

Operation
Handwheel

End Connection
ANSI B16.5 / DIN / JIS

Connection Type
Flanged / Screwed / Socket Weld

Color
Silver Metallic

Body Material
Forged Stainless Steel 316L

Standards
ASME B16.34, BS 5352

Leakage Class
Class VI (Bubble Tight)

Corrosion Resistance
Excellent

Bonnet Type
Bolted

Size Range
DN15 DN200

Testing
Hydrostatic and Pneumatic as per API 598

SQK A182 F316L Stainless Steel Piston Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About SQK A182 F316L Stainless Steel Piston Valve

SQK A182 F316L Stainless 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

Reliable Construction for Industrial Demands

Manufactured from A182 F316L forged stainless steel, this piston valve combines strength and corrosion resistance, ensuring longevity in aggressive media such as oil, gas, steam, and water. The valve's bolted bonnet design and renewable PTFE or stellited seat allow for convenient maintenance, while the ergonomic handwheel supports straightforward manual operation in critical processes.

Leak-Tight Performance with Versatile Connections

The SQK piston valve is engineered for Class VI (bubble tight) leakage standards, fitted with ANSI B16.5, DIN, or JIS end connections for flexible installation. Available in flanged, screwed, or socket weld types, it fits pipe sizes from 1/2 inch to 8 inch (DN15-DN200), addressing a broad range of industrial needs. Its polished or satin surface finish and cylindrical shape enhance cleanliness and aesthetics.

Rigorous Testing and Broad Application Suitability

Tested hydrostatically and pneumatically to API 598 requirements, the valve ensures robust, leak-free service in power plants, refineries, chemical manufacturing, and industrial pipelines. Its capability to operate from -29C to +200C and handle pressures up to 40 Bar makes it an ideal solution for diverse flow control challenges in demanding environments.

FAQ's of SQK A182 F316L Stainless Steel Piston Valve:

Q: How does the SQK A182 F316L piston valve achieve bubble-tight sealing?

A: The valve utilizes a precision piston design alongside renewable PTFE or stellited seats to ensure Class VI (bubble tight) leakage performance, preventing any fluid bypass even under high pressure.

Q: What are the available connection types, and where is this valve typically installed?

A: This piston valve is offered with flanged, screwed, or socket weld end connections, suitable for pipelines conforming to ANSI B16.5, DIN, or JIS standards. It's commonly installed in oil & gas, chimical, power, steam, water, and industrial utility pipelines.

Q: When should I consider using a forged steel 316L piston valve over other valve types?

A: Forged steel 316L valves provide excellent corrosion resistance and durability, making them ideal for corrosive environments or high-pressure applications where longevity and leak-tight sealing are crucial.

Q: What process is followed to test the SQK piston valve before delivery?

A: Each valve undergoes stringent hydrostatic and pneumatic testing in accordance with API 598 standards to ensure durability, correct operation, and maximum leak protection before shipment.

Q: How can the seat be renewed or replaced during maintenance?

A: The bolted bonnet design allows for straightforward, convenient access to the seat. The renewable design means the PTFE or stellited seat can be changed without replacing the entire valve, reducing downtime and maintenance costs.

Q: What benefits do manual operation and the handwheel provide?

A: Manual operation through a handwheel offers precise control, reliable shutoff, and easy adjustment, particularly useful where automation isn't required or immediate operator feedback is valued.

Q: What is the typical size and pressure range for these valves?

A: SQK piston valves are available from 1/2 inch to 8 inch (DN15-DN200) and are designed to operate at pressures up to 40 Bar, accommodating a wide variety of pipe sizes and pressure conditions in industrial applications.

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