A182 F91 Alloy Steel Piston Valve

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MOQ : 5 Units

A182 F91 Alloy Steel Piston Valve Specification

Structure
Piston Valve

Material
A182 F91 Alloy Steel

Power
Manual

Pressure
High Pressure

Media
Water, Oil, Gas

Working Temperature
Up to 600C

Port Size
1/2 to 2

Surface
Polished

Shape
Round

Application
Steam, Gas & Liquid Services

Size Range
Customized sizes available on request

Operation
Handwheel Operated

End Connection
Flanged / Screwed (BSP/NPT)

Body Material Standard
ASTM A182 F91

Trim Material
Stainless Steel / Alloy Steel

Leakage Class
Class VI

Seat Type
Renewable / SS Seat

Testing Standard
API 598

Bonnet Type
Bolted Bonnet

Color
Black Painted

A182 F91 Alloy Steel Piston Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About A182 F91 Alloy Steel Piston Valve

A182 F91 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

Reliable Performance in Harsh Environments

Fabricated from premium A182 F91 alloy steel, this piston valve delivers exceptional durability under high pressure and elevated temperatures. Its renewable seat design ensures easy maintenance, while the polished surface enhances resistance against corrosion. Suitable for demanding applications in power plants, refineries, and process industries, the valve ensures leak-tight sealing and long-term service.

Engineered for Versatile Applications

Whether for steam, gas, or liquid media, the piston valves versatile construction and end connection optionsflanged or screwedenable seamless integration into various piping systems. Its Class VI leakage class and robust stainless steel or alloy steel trim provide reliable operation, making it a preferred choice for precise flow control.

FAQs of A182 F91 Alloy Steel Piston Valve:

Q: How is the A182 F91 Alloy Steel Piston Valve operated?

A: This piston valve is manually operated using a handwheel, which enables precise control over the flow of steam, gas, or liquid within the pipeline.

Q: What makes the A182 F91 Alloy Steel Piston Valve suitable for high-pressure and high-temperature applications?

A: Constructed from ASTM A182 F91 alloy steel and featuring a bolted bonnet and Class VI leakage rating, the valve delivers robust, leak-free performance even at high pressures and temperatures up to 600C.

Q: When should I choose a flanged versus a screwed end connection for this valve?

A: Choose a flanged end connection for pipelines that require easy installation and removal, especially in larger sizes, while screwed (BSP/NPT) connections are ideal for smaller-diameter pipes and compact installations.

Q: Where can this piston valve be used most effectively?

A: This valve excels in applications involving steam, gas, or liquid services, particularly in power plants, oil & gas processing units, and industrial pipelines handling water, oil, or gas media.

Q: What is the process for ensuring quality and leakage control in this valve?

A: Each valve undergoes rigorous testing to API 598 standards, ensuring strict Class VI leakage control and consistent performance in demanding operating conditions.

Q: What are the benefits of the renewable or stainless steel seat in this valve?

A: A renewable or stainless steel seat facilitates easier maintenance and replacement, prolonging the valves life and ensuring sustained tight sealing over time.

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