SEP Priority Demand Valve – DN15-DN50 – Actuated Ball

Description

The Requirement

BS9251 – the standard for ‘fire sprinkler systems for domestic and residential occupancies’ – states in broad terms that IF:
• the mains water supply flow rate available to the fire sprinkler system is liable to be affected by domestic water usage (e.g. shower, washing machine etc).
• THEN a valve must be fitted to cut off supply for domestic use in the event of a sprinkler activation.
• AND that valve must close in the event of a power loss (otherwise known as ‘normally closed’).
• PLEASE NOTE that our PDVs are ‘normally closed’ as standard. However, if you require a ‘normally open’ valve, for example for a watermist system which is NOT subject to BS9251, then this is not a problem – just ask us!

One Solution – Three Options

• For pipe sizes from 15mm/1⁄2” up to 50mm/2” BSP, either of the below (refer to table overleaf to see which is best for your project, as each type has different features and benefits):
• Solenoid valve (see here), or
• Actuated Ball Valve – COVERED ON THIS PAGE
• For pipe sizes from 65mm/21⁄2” up to 150mm/6”we use an electrically actuated butterfly valve for flanged connections (see here).

The Benefits of our product

• All valves are WRAS-approved and therefore can be fitted directly to the mains water supply.
• 24-volt control circuits for safety.
• LED indicator to confirm that power is present.
• LED and position indicators on butterfly valve and ball valve models.
• Fail-safe – the valve closes if a signal is received from the sprinkler system flow switch, BUT it will also close in the event of power loss OR flow switch connection is lost, ensuring that the fire sprinkler is always safe.

For more BENEFITS and FEATURES, please refer to our full DATA SHEET

To see a copy of the full Installation & Commissioning instructions, please click here

*** PLEASE NOTE: we offer only ‘normally closed’ valves on our web shop – if you require ‘normally open’ then please simply [contact us] for a quotation.