Hattersley Fig MH733 PN16 Double Regulating Valve

**Medenus S50 Gas Safety Shut-Off Valve Description** The Medenus S50 Gas Safety Shut-Off Valve is designed to swiftly terminate gas flow when the outlet pressure in the regulation section either exceeds or falls below predetermined safety thresholds. To ensure accurate monitoring, the outlet pressure is conveyed to the SSV control device via a dedicated measurement line. As pressure changes occur, the diaphragm within the control device adjusts accordingly, activating the shut-off mechanism. Should the outlet pressure dip below the lower switch-off point or surge above the upper switch-off point, the switch socket linked to the SSV diaphragm will shift to the disengaging position. This action releases the SSV screw spindle, allowing the closing spring to press the SSV valve plate firmly against the valve seat, effectively sealing off the gas flow with precision. It’s important to note that the SSV can only be manually opened and locked in the open position. For this to occur, the outlet pressure at the measuring point must be reduced below the upper response pressure or increased above the lower response pressure by at least the required re-engaging differential amount (Δp). The SSV is suitable for use in either functional class A (with diaphragm rupture protection) or class B (without diaphragm rupture protection), in accordance with specific national regulations. Additionally, users have the option of integrating a remote display indicating when the SSV is in the “CLOSED” position, as well as a manual and remote release feature that operates both during normal power and in the event of a power outage. **Specifications** - **Sizes**: 1", 1.5" & 2" - **Connections**: Female BSP Inlet x Female BSP Outlet - **Medium**: Gas - **Operating Pressure**: 3 Barg - **Release Mechanism**: Low pressure and high pressure - **Installation Notes**: Can be fitted in any orientation, ensuring a gas-tight zero position. This robust and reliable gas safety shut-off valve is an essential component for ensuring safe gas management in various applications.

The Hattersley Fig 1732L Fixed Orifice Double Regulating Valve (FODRV - Low Flow) is a high-performance commissioning solution designed for precise flow regulation. It boasts an impressive accuracy of ±5% across all settings, making it ideal for various applications. The integral fixed orifice design not only enhances accuracy, but also simplifies installation by reducing connections, ultimately leading to lower installation costs.

Features & Benefits

• Delivers precise and accurate flow regulation
• Easy operation with a handwheel and clear numerical indicator
• Combines integral orifice with built-in test points, eliminating the need for separate DRV and metering station
• WRAS Approved for use with potable water at temperatures up to 85°C
• Ensures positive flow control across all handwheel settings
• Maintains ±5% accuracy for both flow regulation and measurement

Specifications

• Complies with BS7350: 1990
• Operated via a handwheel
• Features a numerical indicator for ease of use
• Includes an inside screw non-rising handwheel
• Equipped with a characterised regulating disc
• Contains an integral fixed orifice
• Supplied with two Figure 631 test points
• Threaded end connections
• Available in sizes ranging from 1 to 2" taper threaded
• Conforms to BS EN 10266 (ISO 7-1), formerly BS 21
• Sizes 1/2" & 3/4" conform to ISO 228 parallel
• WRAS Approved Product

Pressure/Temperature Ratings (Threaded Ends)

• BS 7350 PN20
• 17.2 bar at 120ºC
• 20 bar from -10 to 100ºC

Compression Ends

• 5 bar at 120ºC
• 6 bar at 110ºC
• 10 bar at 65ºC
• 16 bar from -10 to 30ºC
• WRAS approval temperature range: -10 to 85ºC

For reliable and accurate flow regulation, choose the Hattersley Fig 1732L Fixed Orifice Double Regulating Valve—engineered for efficiency and approved for potable water use.

**Product Specification** **Size Options:** 1/2", 3/4", 1", 1¼", 1½", 2", 2½", 3", 4" **Connections:** Flanged DIN or ANSI **Head Type:** C (Gas Tight Cap) **Materials Used:** Stainless Steel (30.2 & 30.7) **Disk Options:** Metal, Viton or Nylon (varies depending on pressure) **Joints & Seals:** NBR, FPM, EPDM (varies with model) **Medium Compatibility:** Suitable for Steam, Gases, and Liquids **Set Pressure Range:** 0.05 to 40 Barg (using various spring sizes) **Temperature Specifications:** - Model 30.1: -10 to +280 °C - Model 30.2: -60 to +280 °C - Model 30.7: -200 to +280 °C **Design Certification:** TUV Approved **Important Notes:** The temperature range applies specifically to valves featuring a metal disk. Please be aware that for Models 30.1 and 30.2, the temperature range varies depending on the body size. This robust range of valves is designed for high-performance applications, providing reliability in the management of steam, gases, and liquids across various industries. Ensure optimal function and longevity by selecting the appropriate materials and configurations for your specific requirements.