Auld Double Control Reducing Valve
Auld Valves Ltd has ceased trading. However, please reach out to us, as we may have alternative options available in our product range.
The Auld Double Control Reducing Valve is ideal for applications requiring substantial pressure reductions, provided that the inlet pressure does not exceed 51 barG. This valve features a self-contained balance pipe, ensuring optimal performance with a closing pressure of +7% relative to the reduced pressure. Its balanced design remains unaffected by fluctuations in inlet pressure and responds instantly to changes in demand. The valve offers impressive reduced pressure accuracy of ±5% across a flow range from full flow down to 10% (with a turndown ratio of 10 to 1). Furthermore, its soft valve faces are well-suited for dead end conditions, and the single seat design facilitates precise control at low flow rates.
Other Products and Services from Flowstar (UK) Ltd
Hattersley Fig M541 PN16 Gate Valve
Features & Benefits: Cast iron construction with integral flanges, inside screw pattern with non-rising stem, and bronze trim.
Specification: Meets BS EN 1171:2002, face-to-face dimensions to BS EN 558-1, flanged to BS EN 1092-2 PN16. Wedge disc, FOCS non-rising stem, handwheel operated.
Pressure/Temperature Rating: -10 to 120°C at 16 Barg; 200°C at 12.8 Barg.
FSSCDA - ASME approved Rupture Discs
The FSSCDA rupture disc features precision micro-scored petals with four, six, or more radial scores, ensuring fast, controlled opening while minimising the risk of petal separation. This design makes the disc particularly suitable for high burst pressure applications. It can be used with both gases and liquids, including under cycling and pulsating conditions, without reducing safety margins. In an overpressure event, the disc activates within milliseconds and opens cleanly without fragmentation, making it ideal for protecting safety relief valves.
The FSSCDA supports an operating-to-burst pressure ratio of up to 85% and offers excellent corrosion resistance, which can be further enhanced with an optional PTFE lining. In many applications, the disc can also operate under full vacuum conditions without the need for support, providing added flexibility. These discs comply fully with ASME Section VIII, Division 1 requirements.
Key Specifications:
Sizes: 1" (DN25) to 36" (DN900)
Materials: Stainless steel, Alloy 201, 400, 600, C276, Titanium
Burst Pressure Range: 2–413 bar g (30–6000 psi g), depending on size and material
Krl: 1.33
Tolerance: ±5% to ±20%
Temperature Range: –196°C to 600°C
Operating Margin: Up to 85%
Fragmentation: None
Use Under Valve: Yes
Corrosion Resistance: Very good
Linings: Optional
Holder Options: FSHI/A, FSHI/P, FSHI/F, FSHTC
Rupture Detection: Electrical, Magnetic, Inductive, Optical
Certifications: ASME (UD Stamp), PED (CE), ATEX EX II 2 GD
FSV NAB Gate 150 - Gate 300 UBS Gate Valve
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.