Hattersley 4970G PN16 Butterfly Valve - Gearbox Operated

Features & Benefits

• Precise and accurate measurements, compliant with BS 7350:1990
• Made from dezincification resistant material, preventing corrosion, cracking, and fungal growth
• WRAS approved for use with potable water at temperatures up to 85°C
• Includes red and blue test points for easy identification of upstream and downstream ports
• Flow measurement accuracy of ±5%

Specifications

• Compliant with BS 7350:1990 standards
• WRAS Approved for temperatures up to 85°C
• Equipped with two Figure 631 test points
• Outlet connection features taper threaded BS EN 10266 (ISO 7-1), previously known as BS 21
• Inlet connection is screwed BS 2779 (ISO 228), parallel
• Suitable for flow rates as low as 0.01 l/s

Pressure/Temperature Ratings

• Threaded Ends
• PN25 Series B
• 15 Barg at 120ºC
• 25 Barg from -10 to 120ºC

This high-quality measurement device is perfect for ensuring accurate flow measurements in a variety of applications. With robust construction and adherence to industry standards, it is a reliable choice for both commercial and residential use. Enhance your system's performance today with our WRAS approved product engineered for optimum efficiency.

The FSSTDFA Forward Acting Rupture Discs are conventional concave solid discs designed for reliability in applications involving gases and liquids under cyclic and pulsating pressure conditions. These rupture discs respond to excessive pressure within milliseconds, ensuring optimal safety. Additional supports can be provided for vacuum or counter-pressure protection.

Product Specifications

Sizes: From 1/2" (DN15) to 24" (DN600)

Materials: Available in Stainless Steel, Alloy 201, Alloy 400, Alloy 600, Alloy 625, Alloy C276, and Titanium

Rupture Pressure: Ranges from 5 to 1150 bar g (depending on diameter)

Tolerance: +/- 5% to +/- 20%

Temperature Resistance: Up to 600 °C

Operating Margin: Up to 70%

Fragmentation: Yes

Installation beneath valves: Not recommended

Corrosion Resistance: Excellent

Linings: Available

Suitable Containers: FSFI/A, FSHI/P, FSHI/F, FSHTC

PED Certification (CE Mark): Available. To order, please download our Rupture Disc Request Form and forward the completed form to sales@flowstar.co.uk.

Introducing our premium stainless steel expansion vessel, designed specifically for heating applications. The Reliance Valves Aquasystem Heating Expansion Vessels are available in capacities ranging from 2 litres to an impressive 5000 litres, with maximum pressure ratings between 8.0 and 10.0 bar. Engineered with replaceable membranes, the Aquasystem range enables in situ servicing, ensuring that water does not come into contact with the steel shell of the expansion vessel. This innovative design prevents internal corrosion and significantly extends the lifespan of the vessel.

**Features and Benefits:**

• Durable stainless steel bolted flange to prevent corrosion.
• Enhanced membrane opening reduces noise caused by restricted flow.
• Internal membrane design eliminates water contact with the steel shell, preventing internal corrosion.
• A comprehensive range from 2 to 5000 litres to suit all heating applications.
• All models come with a replaceable membrane for hassle-free servicing without removal.
• Equipped with a pre-charge valve for easy air pressure adjustments.
• Designed exclusively for heating applications.

**Specifications:**

• Capacity: 80 litres
• Colour: Red
• Pre-Set Pressure (Bar): 1.5
• Max Pressure (Bar): Up to 500 litres at 8.0 bar / 750 litres and above at 10.0 bar
• Minimum Temperature: -10°C
• Maximum Temperature: 99°C
• Height: 687mm
• Diameter: 410mm
• Water Connection: 1" MBSP
• Product Code: XVES100090

**Materials:**

• Shell: Epoxy Coated Steel
• Membrane: EPDM
• Bolted Flange: Galvanised Steel

**Standards and Approvals:**

• CE marked in accordance with Directive PED 97/23/CE
• TÜV Certified for safety and quality assurance.

Choose the Reliance Valves Aquasystem Heating Expansion Vessel for reliable performance and long-lasting efficiency in all your heating applications.