Cistermiser Low Pressure Hydraulic Urinal Flush Control Valve - Hygiene Flush

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The Cistermiser low pressure hydraulic urinal flush control valve is an automatic urinal flush control valve for low pressure tank fed systems, 3m - 5m head. With an operating sensitivity of 20% of supply pressure. Using a simple and innovative mechanism, water is saved by only allowing the automatic flush cistern to fill up, and flush when the washroom is in use.

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This Cistermiser Low Pressure Hydraulic Urinal Flush Control Valve utilises a simple and innovative mechanism to save water by allowing the automatic flush cistern to fill up and flush when the washroom is in use.

Installation of the cistermiser low pressure valve onto the urinal cistern supply pipe will limit the flow of water to the urinal system, allowing flow only when the washroom is not in use.

This valve is available to purchase on it's own, or with a hygiene flush attachment. With the additional of the hygiene flush attachment the standard urinal Cistermiser is also able to perform a hygiene cycle or janitorial flush every 12 hours of inactivity to reduce unpleasant odours from the urinals and reduce the risk of blockages in the wastes even when the washrooms are not being used.

We also provide a version of this flush valve that is suitable for standard pressure systems.

Cistermiser urinal valves:

The Cistermiser range of hydraulic valves urinal flush controls are installed in-line with the water supply inlet pipe into the cistern and sense short term drops in pressure within the water supply. Each time a drop in pressure is identified the valve releases a measured amount of water into the cistern. The auto-syphon will flush the urinals once the required amount of water is in the cistern.  The short term drops in water pressure the Cistermiser flush control senses are caused by the use of taps or toilet flushing within the washroom, which approximates the use of the urinals.

With an adjustable timer, the valve can remain opened or shut for varying periods, thereby changing the amount of time the cistern takes to fill up. The valve is activated by a sudden short term pressure drop in the system, caused by events such as taps turning on.  When activated, the valve opens and water passes to the urinal cistern until the pressures on both sides of the valve are equalised. When the cistern is full the auto-siphon will flush.

The low pressure Cistermiser flush control valve is ideal for low pressure water systems where the water supply to the washroom is tank fed with a 3m - 5m head.

More information is available in the data sheets attached.


  • Automatic urinal flush control
  • Ensures compliance with the Water Regulations - WRAS approved product
  • Saves water - reduces water bills and eco-footprint
  • Unique patented hydraulic mechanism - no electrical supply or batteries required
  • ‘Fit and forget’ quality and reliability - virtually no maintenance
  • Works with low water pressures
  • Suitable for water delivered from a tank system with a 3m - 5m head
  • Cistermiser 3 year product manufacturer guarantee (upon product registration)
  • Made in Britain

Product codes:

  • LP-VALVE - Cistermiser Low Pressure Hydraulic Urinal Flush Control Valve
  • LPIF - Cistermiser Low Pressure Hydraulic Urinal Flush Control Valve with Hygiene Flush
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Small Items: Standard delivery is £10 + VAT per delivery. This one-off standard charge applies to all our products, except our cubicles, vanity units, wash troughs, IPS panelling range, and fragile items such as sanitaryware and mirrors.

Fragile Items: Pallet delivery starts from £40 + VAT with prices varying depending on delivery location. Fragile products include ceramic sanitary ware, Doc M Packs, and mirrors. Pallet shipments to Northern Scotland and Northern Ireland start from £100 + VAT.

Oversized Items: Delivery costs of bespoke cubicles, IPS panels, vanity units and other bulky products start at £105 and vary depending on the delivery location.

Deliveries to Ireland, Europe and worldwide are available and are quoted on a case-by-case basis. Please get in touch with the Commercial Washrooms sales team for further information and bespoke delivery prices.

Delivery timescales

We operate a next-day delivery service on all stocked items, including pallet deliveries, to standard UK locations. Delivery timescales will vary for any items not in stock. Please get in touch if time is of the essence for an accurate lead time.

All bespoke products such as cubicles and vanity units are on extended lead times to allow for manufacturing time. This is typically 18-21 working days from drawing sign-off.

Further information can be found on our delivery service page.

Product Returns

We are happy to accept returned items that are no longer required as long as they are in A1 condition and in their original unopened packaging. To arrange a return, please notify our after-sales team within five days of delivery.

If any goods are found to be damaged or faulty, we require email evidence and confirmation within two working days of receipt.

Any non-faulty Goods which are non-stock Goods, or which are bespoke, made-to-measure, personalised, customised, made to the Customer’s specification or specially ordered (Restricted Goods) may not be returned.

Email: [email protected]

Phone: 01202 650900

Click here to read our full Terms on Returns.

Product Warranty

Many of the products we sell come with a manufacturer’s warranty, guarantee or similar assurance. Although we do not have any responsibility or liability under or in connection with any such warranty, guarantee or assurance, we will manage any warranty claim. Please contact us in the first instance.

Email: [email protected]

Phone: 01202 650900

Click here to read our full Terms and Conditions.

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