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Vortex flow control shaft VS-Control flex M

£1,099.00
Maximum quantity available reached.

The vortex flow control shaft can regulate flows of up to 65 l/s. The vortex flow control shaft VS-Control External is ideal for retention systems fitted with EcoBloc elements or retention tanks.

  • Continuously variable installation depth of 985 mm – 6500 mm (38.8" – 21' 4")
  • Minimal height offset between the inlet and the outlet (315 mm (12.4") VS-Control External S; 445 mm (17.5") VS-Control External M; 505 mm (19.9") VS-Control External L)
  • Individually adjustable outflow value
  • Support in the planning and dimensioning of our system
  • Housing can be shortened

Versatile use

  • With storage modules, welded into watertight plastic liners
  • With underground tanks
  • With retention tanks provided by the customer

Project-specific design

  • Flexible adaptation to the local site conditions using GRAF shaft components
  • Project specific dimensioning of the replaceable orifice
  • Different shaft sizes for individual requirements

Reliable in operation

  • No wear because there are no moving parts
  • Low-maintenance, because of the self-cleaning-effect through vortex flow
  • Extremely good revision capability
There is no additional documentation for this product

The delivery information page is divided into 1. Specific and 2. General delivery information below. 

1. Specific Delivery Information relating to product lines
  • Small items dispatched daily with RM24 ~85% arriving next day
  • Large items (UK made) typically 5 - 15 working days (Parcelforce/Tuffnells etc.) 
The following items have a 2-4 week lead time:
    • Prestige Square planters (Please get in touch)
    • Evergreen
    • Prestige 500 litre Georgian rain water butt planter
    • 750L RainCatcher Rainwater Tank
    • Watersafe Well Water Test Kit 10-in-One
    The following items (EU) are purchased on a pre order basis with a potential 4-8 weeks lead time:
      • Hydraloop
      • 100l Manhattan Grey
      • All Ecosoft Items (Please email to confirm stock)
      The following items (EU) are purchased on a pre order basis with a potential 6-8 week lead time:
      • 200l slim wall hung water butt
      The following items (EU) are purchased on a pre order basis with a potential 8-12 week lead time:
      • Column 500L - Green
      • Rainbowl - Slate
      • Rainbowl - Blue Grey Granite
      • Noblesse - sandstone
      • Maurano - Sandstone

      The following items (EU) are purchased on a pre order basis with a potential 12 week lead time:

      • Design (circular and modern) water butt stands
      2. General Delivery information

      We're a Manchester based company and ship to the UK at our standard rates. Please get in touch if you are based in the Highlands, UK island or Northern Ireland, surcharges may apply. 

      We no longer support ordering from the EU and NI through the website. We can support ad hoc orders with limited liability.

      Our design and Prestige range is available in the Netherlands, Ireland, Belgium, France, Germany, direct or through our distributors.

      Stock items will be dispatched on the day of order, if ordered before 1pm.

      Letters are sent 1st class. 

      Parcels <2kg are shipped with Royal Mail 24 Tracked with the following target delivery times.

      A loss/replacement can only be pursued in line with the target delivery times of the courier or once the courier accept loss. 

      Bulky items (and pallet deliveries) are dispatched within 2-5 working days. We will request a contact number if this has not been provided at checkout. 

      Some items are made to order (bespoke) and details are given on the listing for dispatch times.  If for any reason we anticipate a delay on our normal dispatch time we will contact you to let you know.

      Occasionally there are delays. We shall not be liable for any direct or indirect losses, costs, damages or expenses incurred by you or any other person for any delays in delivery.

      Missed deliveries where attempted delivery has been made usually result in re-deliveries the following day. The customer is responsible for organising re deliveries by contacting the courier direct

      Parcels/deliveries can only be "left out" if the delivering company allows that option. Parcelforce, for example, do not allow a parcel to be "left out". 

      We are an environment centric business and as such we try to minimise our waste. Our packaging is usually recycled and/or recyclable and we make efficient use of packaging to minimise wastage.

      Covid delivery updates between 12.3.20 and 11.1.21 21 have been archived here.