Class 150 Piston Valve

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MOQ : 5 Units

Class 150 Piston Valve Specification

Structure
Bolted Bonnet, Non-Rising Stem

Material
Cast Steel, Forged Steel, Stainless Steel

Power
Manual

Pressure
Class 150

Media
Water, Oil, Gas, Steam

Working Temperature
Up to 425C

Port Size
15mm to 400mm

Surface
Anti-corrosive Painted / Natural Finish

Shape
Straight Pattern

Application
Steam, Oil, Gas Service

Flow Direction
Bi-Directional

End Connection
Flanged Ends (ANSI B16.5)

Hydro Test
As per API 598

Body Test Pressure
20 kg/cm² (Hydrostatic)

Design Standard
BS 5150 / EN 13709 / API 600

Leakage Class
Class VI

Operation
Handwheel Operated

Sealing
Renewable Valve Rings with Non-Asbestos Packing

Class 150 Piston Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About Class 150 Piston Valve

Class 150 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 Sealing Technology

Equipped with renewable valve rings and non-asbestos packing, the Class 150 Piston Valve ensures superior sealing against leaks and withstands challenging media such as steam, oil, gas, and water. This provides lasting protection and performance even in demanding industrial environments.

Superior Standards and Testing

Designed to meet BS 5150, EN 13709, and API 600 design standards, this valve undergoes hydrostatic testing up to 20 kg/cm2 as per API 598. Such rigorous quality checks guarantee the performance, reliability, and safety of the valve in critical applications.

Versatile Application and Material Choices

Suitable for steam, oil, gas, and water services, the valve is constructed from cast steel, forged steel, or stainless steel, offering compatibility with diverse process conditions. Different surface options provide resilience against corrosion, broadening its range of uses in industrial systems.

FAQ's of Class 150 Piston Valve:

Q: How does the Class 150 Piston Valve ensure leak-tight sealing during operation?

A: The valve utilizes renewable valve rings and non-asbestos packing, which create robust sealing zones around the piston. This construction effectively minimizes leakage, delivering Class VI leakage performance even under fluctuating pressures and temperatures.

Q: What is the recommended process for hydrostatic testing of this piston valve?

A: Hydrostatic testing should be conducted as per API 598 standards, subjecting the assembled valve to a body test pressure of 20 kg/cm2. This verifies the valve's structural integrity and sealing ability before commissioning in any steam, oil, or gas service.

Q: When should the renewable valve rings or packing be replaced?

A: Valve rings and packing should be inspected during routine maintenance cycles or whenever leakage is detected. Replacement is recommended if wear, deformation, or decreased sealing performance is observed, ensuring reliable operation over the valve's service life.

Q: Where can the Class 150 Piston Valve be installed within industrial pipelines?

A: This valve is suitable for installation in steam, oil, gas, and water pipelines where manual shutoff and flow control are needed. Its flanged ends (ANSI B16.5) facilitate secure mounting across a broad range of industrial sectors, including process plants and utility systems.

Q: What are the operational benefits of a handwheel-operated, non-rising stem design?

A: The handwheel operation allows precise manual control, while the non-rising stem conserves vertical space and simplifies installation in areas with space constraints. This design is particularly advantageous for maintenance and operational reliability.

Q: How does the anti-corrosive surface finish enhance valve durability?

A: An anti-corrosive painted or natural finish protects the valve body against environmental and process-induced corrosion, extending its operational lifespan and supporting consistent performance across varying industrial conditions.

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