Auld Double Control Reducing 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.

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

**Product Description** Gate valves are specifically engineered for on-off service applications. These valves comprise a body, bonnet, gate, stem (featuring an internal screw and yoke), a rising stem equipped with a non-rising handwheel, and an integral seat as standard. Additionally, there are options available for renewable seats, along with an open and closed indicator, complete with a lockable handwheel. --- **Features** Gate valves provide reliable shutoff capabilities with minimal pressure drop, rendering them perfect for regulating liquid or gas flow across diverse applications. Their sturdy construction promotes high efficiency and easy maintenance, thanks to their uncomplicated design. Gate valves can be manually operated or automated using devices such as motors, solenoids, or actuators. When the gate is in the closed position, it serves as an effective barrier, preventing flow. In contrast, when opened, the gate retracts from the seat, permitting unrestricted flow through the valve. Once closed, fluid movement is entirely halted. --- **Materials** - **Body/Bonnet**: NAB (ASTM B148 C95800) - **Stem**: NAB (ASTM B150 C63200) / MONEL (ASTM B865 N05500) - **Handwheel**: Stainless Steel (ASTM A351 CF8M) --- **Technical Data #150/PN32** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 19 / 32 BAR - **Min Temperature**: -29°C / -10 to 66°C - **Max Pressure**: 7.9 / 14 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- **Technical Data #300** - **Design Standard**: MSS SP 80 / BS 5154 / BS EN 12288 - **Size**: DN15 to DN80 - **End Connection**: ASME B1.20.1 - **Face To Face**: As per manufacturer specifications - **Testing**: EN 12266-1, API 598 - **Max Pressure**: 49.6 BAR - **Min Temperature**: -29°C - **Max Pressure**: 20.6 BAR - **Min Temperature**: 260°C - **Material Test Certification**: BS EN 10204-3.1 --- Optimise your operations with our premium-quality gate valves, designed for durability and efficiency. Perfect for a wide range of industrial applications, they ensure perfect control over fluid flow while adhering to essential safety and performance standards.