SEP Priority Demand Valve – DN65-DN150

Description

*Please note: if flange adaptors are selected then this will add 2-3 days to the lead time as they are a special order*

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 (see here)
• For pipe sizes from 65mm/21⁄2” up to 150mm/6”we use an electrically actuated butterfly valve for flanged connections – COVERED ON THIS PAGE.

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.

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.