Safety Valves

Safety Relief Valve

 Falcon is a recognized leader in the design and manufacture of high-performance safety relief valves, engineered to protect pressurized systems across oil and gas, petrochemical, and power generation industries. Their focus on precision engineering ensures reliable overpressure protection in even the most critical environments.

 

Core Valve Configurations

Falcon specializes in the two primary architectures for pressure relief:

1. Conventional Safety Relief Valves

Used in systems where the backpressure is stable or negligible. The operational characteristics (opening and closing) are directly affected by changes in the backpressure of the discharge system.

 

2. Bellows Type Safety Relief Valves

Designed for applications where variable backpressure is present. The integrated bellows compensates for backpressure, ensuring the valve opens at the correct set pressure regardless of downstream conditions. It also protects the guiding surfaces and spring from corrosive process fluids.

 

Technical Specifications & Materials

Falcon's versatility is highlighted by its extensive range of sizes and exotic Material of Construction (MOC) options:

• Size Range: 1/2" to 24" (Inlet diameter), accommodating everything from small-scale piping to massive industrial headers.

• Material Availability:

  • Standard: Carbon Steel (CS), Stainless Steel (SS).

  • High Performance: Alloy Steel, Alloy 20.

  • Exotic & Corrosion Resistant: Nickel Alloys (Inconel, Monel, Hastelloy), Nickel Aluminium Bronze (ideal for seawater), and Titanium.

Quality Assurance & Global Standards

Falcon emphasizes "Expertise in Design" by adhering to international codes like ASME Section VIII and API 526/520. Their manufacturing process is validated through rigorous Third-Party Inspections (TPI) by major international agencies such as:

• Bureau Veritas (BV)

• TÜV SÜD

• SGS

• Lloyd's Register

Note: Every valve undergoes stringent hydro-testing and set-pressure verification to ensure fail-safe performance before it leaves the facility.

ere is the breakdown of the pressure ratings and material capabilities for Falcon Manufactured Safety Valves.

ASME Pressure Ratings by Material

The pressure class of a safety valve defines the maximum pressure the valve body can withstand at specific temperatures. Falcon provides valves ranging from Class 150 to Class 2500 (and up to PN 400 for DIN standards).

Material Group	Common Materials (MOC)	Pressure Class (ASME)	Typical Temp Range
Carbon Steel	ASTM A216 WCB / WCC	150# to 2500#	-29°C to 425°C
Stainless Steel	CF8, CF8M, CF3, CF3M	150# to 2500#	-196°C to 538°C
Alloy Steel	ASTM A217 WC6, WC9, C12A	300# to 2500#	Up to 593°C
Nickel Alloys	Monel, Inconel, Hastelloy	150# to 2500#	Highly Variable
Special Alloys	Alloy 20, Titanium, Duplex	150# to 1500#	Process Dependent
Bronze	Nickel Aluminium Bronze	150# to 300#	Cryogenic to 200°C

Falcon’s Sizing Methodology

Falcon’s team of technocrats utilizes a data-driven approach to ensure every valve meets the strict discharge requirements of API 520 (Sizing & Selection) and API 521 (Depressuring Systems).

1. Scenario Identification

The team analyzes your system to identify the "worst-case scenario" for overpressure, which determines the required relief capacity:

• Blocked Outlet: Valve sizing for pump/compressor discharge.

• Fire Case: Calculating heat absorption and vapor generation rates.

• Thermal Expansion: Sizing for liquid expansion in piping.

• Tube Rupture: Specifically for Heat Exchangers.

2. Specialized Calculation Parameters

Falcon's experts calculate the Required Orifice Area ($A$) using the following variables:

• Discharge Coefficient ($K_d$): Specific to Falcon’s nozzle designs.

• Backpressure Analysis: Determining if a Bellows Type is required based on built-up or superimposed backpressure.

• Compressibility Factor ($Z$): For gas and vapor applications.

• Two-Phase Flow: Advanced sizing for mixed liquid/gas scenarios.