Sempell Fasani Style A High Pressure Check Valve Metal-to-Metal Seal API 602

日期：2025-09-27 01:02

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摘要： High pressure check valve, forged steel check valve, Style A check valve, Sempell Fasani valve, API 602 check valve Technical: Metal to metal seal check valve, piston check valve, Class 800 check valve, socket weld check valve Application-Based: Check valve for power plant, check valve for oil and gas, steam line check valve, boiler feed check valve

Sempell Fasani Style A High Pressure Check Valve

Metal-to-Metal Seal API 602

Overview

The Sempell Fasani Style A forged steel check valve. Designed for high-pressure services in power generation & oil & gas. Features metal-to-metal seal, API 602 compliance, and sizes from 1/2" to 2". Ideal for steam, water, & hydrocarbon applications.

Sempell Fasani Style A Forged Steel, High Pressure Check Valve

The Sempell Fasani Style A is a rugged, high-performance check valve engineered for critical sealing in high-pressure and high-temperature applications. Manufactured from forged steel for superior integrity, this compact valve is designed to prevent reverse flow in systems handling steam, water, oil, and other demanding media. Its robust construction and reliable operation make it a preferred choice for power generation, oil and gas, and industrial process systems.

Key Features and Product Highlights

Forged Steel Construction: Provides enhanced strength, density, and structural integrity over cast equivalents, ensuring reliability under high pressure cycles and thermal shock.
Metal-to-Metal Sealing: The primary seal is achieved through precision-machined metal surfaces (seat and disc), offering excellent resistance to erosion, high temperatures, and thermal cycling, ensuring long-term leak-tightness.
Compact & Lightweight Design: The Style A's forged body results in a smaller and lighter valve compared to cast steel valves of similar pressure class, simplifying installation and supporting system weight reduction.
Piston-Type Design with Spring Assistance: Features a guided piston disc and an internal spring. The spring ensures rapid closing, minimizing reverse flow and preventing water hammer, which protects upstream equipment like pumps.
API 602 Compliance: The valve is designed and manufactured in accordance with API 602 standard ("Compact Steel Gate Valves for Refinery Service"), which governs the quality and dimensions of forged steel valves for the petroleum and petrochemical industries.
High-Pressure Capability: Typically available in pressure classes such as ASME Class 800 and Class 1500, making it suitable for the most demanding service conditions.

Technical Specifications

Parameter	Specification
Valve Type	Swing Check Valve, Piston Type
Design Standard	Style A (Compact Forged Body)
Body Material	Forged Carbon Steel (A105) or Forged Alloy Steel (F22, F91)
Pressure Class	ASME Class 800, Class 1500 (Other classes available)
Size Range	1/2" (DN15) to 2" (DN50)
Seat & Disc Material	13% Chrome Steel or Stellite Hard-faced for enhanced wear resistance
End Connections	Socket Weld (SW) or Threaded (NPT)
Temp Range	Suitable for services from cryogenic temperatures up to +593°C (+1100°F) depending on material grade
Compliance	API 602, ASME B16.34, NACE MR0175/ISO 15156 available upon request

Typical Applications

The Sempell Fasani Style A Check Valve is specified for a wide range of critical services, including:

Power Generation: Main steam, feedwater, and auxiliary lines in fossil fuel and nuclear power plants.
Oil & Gas: Wellhead control lines, chemical injection, process skids, and refinery piping.
Industrial Processes: High-pressure boiler feed, steam tracing, and other utility services in chemical and petrochemical plants.

Why Choose the Sempell Fasani Style A Check Valve?

Proven Reliability: With a heritage in critical industrial applications, Sempell Fasani valves are known for their durability and performance.
Superior Sealing Technology: The metal-to-metal seal ensures zero leakage in high-temperature conditions where soft seals would fail.
Reduced Lifecycle Cost: The robust forged construction and hardened trim materials minimize wear and extend service intervals, offering excellent long-term value.

Sempell Fasani Style A High Pressure Check Valve

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