Hattersley Fig 1432 PN20 Double Regulating Valve

The Resideo DDS76 Differential Pressure Switch is designed to monitor the performance of the Resideo F78TS Flanged Reverse Rinsing Filter by detecting potential clogging or blockages. When a blockage is identified, the DDS76 can signal the reverse rinsing actuator, provided one is installed, ensuring optimal filter functionality and maintenance.

Product Part Codes:

DDS76-1/2, DDS76-1, DDS76-11/2

### Product Description Gate valves are primarily utilised for on-off applications, providing reliable control over fluid and gas flow. These valves feature a robust construction, comprising a Body, Bonnet, Gate, Stem (with outside screw and yoke), a rising stem equipped with a non-rising handwheel, and an integral seat, with options available for renewable seats. Additionally, they incorporate an open and closed indicator along with a lockable handwheel for enhanced operational security. ### Features Gate valves are renowned for their ability to offer a positive shutoff with minimal pressure drop, making them highly effective for managing the flow of liquids and gases across various applications. With their sturdy design and straightforward maintenance, these valves are both efficient and user-friendly. Operable either manually or via automated devices such as motors, solenoids, or actuators, the gate valve functions effectively by acting as a barrier when closed, blocking fluid flow completely. When the gate is opened, it swings away from the seat, facilitating unrestricted flow through the valve. ### Materials - **Body/Bonnet:** NAB (ASTM B148 C95800) - **Stem:** NAB (ASTM B150 C63200) / MONEL (ASTM B865 N05500) - **Bonnet Joint:** SS-136 + Graphite - **Handwheel:** ASTM A351 CF8M ### Technical Data #150 - **Design Standard:** MSS SP80 / BS 5154 / BS EN 12288 - **Size:** DN15 to DN100 - **Flanges:** ASME B16.5 #150 - **End To End:** ASME B16.10 #150 - **Testing:** EN 12266-1, API 598 - **Max Pressure:** 19 BAR / **Min Temperature:** -29°C - **Max Pressure:** 7.9 BAR / **Min Temperature:** 260°C - **Material Test Certification:** BS EN 10204-3.1 ### Technical Data #300 - **Design Standard:** MSS SP80 / BS 5154 / BS EN 12288 - **Size:** DN15 to DN80 - **Flanges:** ASME B16.5 #300 - **End To End:** ASME B16.10 #300 - **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 Enhance your industrial operations with our high-performance gate valves, ensuring safe and effective control over your fluid and gas systems.

**Product Features and Benefits** - Resistant to dezincification - Lightweight, compact design for easy installation and operation - Enhanced leak protection capabilities - Increased durability during installation - WRAS approved for hot and cold water systems up to 85°C - Conforms to BS EN 13547 standards - Available T-Handle sizes: ½” to 1” - Available Lockshield sizes: ½” to 2” **Specifications** - UK End Connection: BS EN 10226-2:2005 (formerly BS21 Taper) - US End Connection: ANSI B1.20.1:1983 - Operator Types: T-Handle, Spanner, Socket - Specification: DZR Brass (CW602N) Body Ball Valve, constructed in accordance with BS EN 13547, featuring a two-piece design, floating stainless steel SS304 ball, anti blow-out stem, PTFE seats, threaded ends, and rated for PN25. WRAS approved. - Suitable for use with Group 2 Gas, and Group 1 and Group 2 Liquids as defined by the Pressure Equipment Directive 2014/68/EU (as amended). - Not suitable for Group 1 Gases or unstable liquids. **Pressure and Temperature Ratings** - Operating Range: -10 to 100°C at 25 Barg - Maximum Temperature: 120°C at 21.8 Barg Optimise your plumbing solutions with our high-quality DZR Brass Ball Valves, designed for reliable performance and exceptional durability in your hot and cold water systems. With WRAS approval and compliance with safety standards, these valves are the ideal choice for both domestic and commercial applications.