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Socket Weld Piston Valve

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MOQ : 5 Units

Socket Weld Piston Valve Specification

Structure
Piston Type

Material
Forged Carbon Steel

Power
Manual

Pressure
PN20 to PN40 (20 to 40 Bar)

Media
Steam, Oil, Gas

Working Temperature
Up to 425C

Port Size
15 mm to 50 mm

Surface
Corrosion-resistant coated

Shape
Straight

Application
Steam, Oil, Gas lines

Valve Design
Double-seated Piston Construction

Color
Black or custom as per order

Gland Packing
Graphite / PTFE

Body Material
Forged or Cast Steel

Standard
ASME B16.34 / DIN / IS Standard

Operation
Handwheel operated

Bonnet Type
Bolted Bonnet

Trim
13Cr / SS410 / SS304

Size Range
½ inch to 2 inch (DN15 to DN50)

Leakage Class
Class VI (Bubble Tight Shut Off)

Test Pressure
1.5 times of working pressure

End Connection
Socket Weld

Socket Weld Piston Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About Socket Weld Piston Valve

Socket Weld Piston Valve

Full port forged steel isolation valves with a maximum operating pressure of 1973 psig/136 Barg and a maximum operating temperature of 800°F/427°C. 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

Superior Shut-Off Performance

With Class VI bubble-tight closure, the socket weld piston valve ensures complete isolation of media, minimizing leakage and optimizing system efficiency. Its double-seated piston design makes it ideal for high-pressure and high-temperature applications in steam, oil, and gas pipelines.

Durable Construction and Materials

Manufactured from forged or cast carbon steel, and featuring corrosion-resistant coatings, this valve is highly resilient against harsh industrial environments. High-grade trim materials like 13Cr, SS410, and SS304, along with graphite/PTFE gland packing, offer superior longevity and reliability.

FAQ's of Socket Weld Piston Valve:

Q: How does the socket weld piston valve guarantee zero leakage during operation?

A: The valve achieves Class VI (bubble-tight) shut off via its double-seated piston construction, which completely isolates the media and minimizes leakage even under demanding high-pressure conditions.

Q: What are the typical applications for this piston valve in industrial settings?

A: This piston valve is used extensively in steam, oil, and gas lines, serving to regulate and isolate flow in pipelines within manufacturing plants, refineries, and process industries.

Q: When should a socket weld end connection be chosen for valve installation?

A: Socket weld connections are preferred when a secure, permanent joint is needed and welding is feasible, particularly for high-pressure and high-temperature services ranging from PN20 to PN40 and temperatures up to 425C.

Q: Where can this piston valve be installed within a facility?

A: The valve is suitable for installation at any section of steam, oil, and gas pipelines that require reliable shut-off and regulation, particularly where line sizes range from 12 inch to 2 inch (DN15 to DN50).

Q: What is the testing process for the valve before it is dispatched?

A: Each valve undergoes hydrostatic testing at a pressure 1.5 times its working pressure to ensure its integrity and performance align with ASME B16.34, DIN, or IS standards.

Q: How does the handwheel operation contribute to the valve's usability?

A: The manual handwheel operation allows for precise and straightforward flow control, making it user-friendly and reducing maintenance demands compared to automated systems.

Q: What are the benefits of corrosion-resistant coatings on the valve's surface?

A: The specialized coatings protect the valve against rust and chemical attack, extending service life even in harsh media like steam, oil, and gas, and allowing for color customization as per project requirements.

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