NABIC 542F Flanged Safety Relief Valve

NABIC 542F Flanged Safety Relief Valve

**NABIC 542F Flanged Safety Valve - Versatile Protection for Hot Water, Steam, and Air** The NABIC 542F flanged Safety Valve is an exceptionally versatile solution designed to manage pressures in hot water, steam, or air applications. While primarily engineered for the protection of hot water boilers, its extensive range of applications makes it the perfect general-purpose safety valve for various industrial settings. Additionally, NABIC Valves are backed by an industry-leading 5-year guarantee, ensuring peace of mind for your investment. ### Product Specifications: - **Sizes Available:** 1.1/4" (DN32), 1.1/2" (DN40), 2" (DN50), 2.1/2" (DN65), 3" (DN80) - **Connections:** Flanged Inlet (PN16 or ANSI150) x Female BSPP Outlet - **Materials:** Gunmetal Body, PTFE Seat - **Set Pressure Range:** 0.3 Barg to 10.5 Barg - **Temperature Range:** -20°C to 195°C Max **Note:** Each valve is meticulously set and tested to your required pressure before dispatch, ensuring optimal performance upon arrival. Discover the reliability of the NABIC 542F Flanged Safety Valve – the ideal choice for safety and efficiency in your hot water, steam, and air systems.
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Other Products and Services from Flowstar (UK) Ltd

CONCOA 332 Series Regulator

CONCOA 332 Series Regulator

The CONCOA 332 Series is a five-port, stainless steel, dual-stage cylinder regulator designed for primary pressure control of high-purity inert gases (up to grade 5.5), including mildly reactive gases—but not toxic or highly corrosive gases. Its two-stage design minimizes pressure fluctuations from cylinder depletion, providing stable delivery pressure for critical applications. Factory-configurable options make it ideal for university labs, research facilities, and pharmaceutical manufacturing.

Features:

  • 316L stainless steel diaphragm prevents inboard diffusion

  • CAPSULE® seat design with 360° integral filtration in both stages

  • Helium leak-tested for integrity

Specifications:

  • Max inlet pressure: 3000 PSIG (210 BAR); optional 4500 PSIG (310 BAR)

  • Body: 316L stainless steel barstock; Bonnet: Chrome-plated die-cast zinc

  • Gauges: 2" (50 mm) stainless steel plated case

  • Seats: PCTFE (first stage), PTFE (second stage)

  • Filter: Patented 10-micron 316 stainless steel mesh

  • Temperature range: -40°F to 140°F (-40°C to 60°C)

  • Diaphragm: 316L stainless steel; Cv: 0.1

  • Helium leak integrity: 1 × 10⁻⁸ scc/sec

  • Internal seals: PTFE; Ports: 1/4" FNPT

  • Compliance: Meets/exceeds CGA G-4.1, ANSI/ASME B40.1, PED 2014/68/EU, CRN OH5216

Auld Vigilant Safety Valve

Auld Vigilant Safety Valve

Auld Valves Ltd has ceased trading. Please contact us to explore alternative options available in our product range. 

The Auld Vigilant Safety Valve features a blowdown characteristic ranging from 5% to 10%. It boasts a fully enclosed flow design with an external spring that remains unaffected by the process fluid or temperature. A soft face version is also available. This valve complies with normal lift designs according to BS759 and BS1500 standards. It achieves rated flow within 10% overpressure, ensuring optimal performance. With a robust construction and fully guided design, it minimises deformation and leakage, incorporating stainless steel trim for enhanced durability. Assembled from standardised components, this valve allows for easy maintenance. The springs conform to BS1726 class A specifications, providing a clean opening, stable performance, and reliable positive closing. 

Niezgodka Type 10.2 Safety Valve - Stainless - Lever

Niezgodka Type 10.2 Safety Valve - Stainless - Lever

Product Specifications

Size Options: 3/8", 1/2", 3/4", 1"
Connections: Screwed BSPP or NPT
Materials:
- Nozzle: Stainless Steel
- Spring Bonnet: Stainless Steel
- Disk: Metal
- Joints & Seals: NBR, FPM, EPDM (varies by model)
Head Type: A (Gas-tight Lever)
Medium Compatibility: Steam, Gases, and Liquids
Set Pressure Range: 0.05 to 500 Barg (dependent on size)
Temperature Range: -60 to 280 °C
Additional Information: We offer various other variants (please refer to downloads) featuring alternative (a) O-ring and disk materials, (b) NPT connections, (c) orifice sizes, and (d) head types. For further details, kindly get in touch with us.

Flowstar UK Ltd

Flowstar (UK) Ltd

Wiltshire Road, Kingston-upon-Hull, East Riding of Yorkshire, HU4 6PA, United Kingdom

Flowstar (UK) Ltd is a leading global supplier of safety, relief, and reducing valves. With strong partnerships across major manufacturers, we deliver precise, reliable valve solutions tailored to your needs. Email enquiries to sales@flowstar.co.uk or call us on +44 (0)1482 601030.