Telescopic Valves

Series 44

BNW series 44 Telescopic Valves are custom designed fabricated stainless steel slip-pipe assemblies for controlling liquid levels and collecting supernatant.

  • Features:

  • Fabricated stainless steel tube buffed to lower friction and minimize seal wear
  • Double V-notch inlet for precise setting of levels. Custom oversize flared or V-notch inlets are available.
  • Double base flange retained neoprene seal allows adjustment and replacement of the seal between the telescopic valve tube and the mating field piping while eliminating leakage at this interface.
  • Stainless steel ACME thread rising stem design with bronze lift nut to prevent binding during valve travel.
  • Stem or pedestal mounted anti-rotation key prevents the valve tube from rotating in the integral seal during travel to limit seal wear.
Series 44 Telescopic Valves
Series 44 Telescopic Valves


Our custom designed telescopic valves are fabricated in stainless steel, type 304 or 316, and are a rising stem construction with integral neoprene seal. Stems are ACME thread stainless steel. Sizes range from 75mm to 600mm diameter.


Series 44 Telescopic Valves are flanged for mounting directly to customer supplied field piping and sized to slide freely inside the ID of the mating pipe. Operation is by means of pedestal mounted manual handwheel or electric actuator. BNW supplied stainless steel pedestal support brackets and stem guides are custom built to the requirements of the installation.


Applications for our telescopic valves are level control in clarifiers, tanks, and wetwells, collection of supernatants, and overflow protection in biosolids storage facilities.

Municipality Project Consultant Contractor Qty Size
Municipality of South Dundas  Iroquois WPCP Aecom (Whitby) Nordmec 3  100mm
Muskoka District  Port Carling Medora St WWTP Aecom (Whitby) Baseline Const. 3  100mm
City of Sudbury  Garson lagoons Aecom Hollaway Const 1 250mm
Merrickville  Merrickville STP Aecom (TSH) Black & Mac 2  100mm
Mississippi Mills  Mississippi Mills WPCP Genivar (TRG) NAC 1  600mm
Town of Barrys Bay  WPCP Aecom (TSH) Harrington 2 75mm
Lennox & Addington County  Amherstview WWTP TRG Maple Reinders 1 150mm
Town of Belle River  Belle River WPCP Stantec Kingdom 1 250mm
Clewiston Florida  Big Cypress WWTP Mack Industries Florida Design 3 8 inch
New Tecumseth (Alliston)  New Tecumseth WPCP RV Anderson Bennett 3 150mm
City of Kawartha Lakes  Bobcaygeon STP TSH Peak Eng 1 100mm
Deep River  Deep River WTP JP2G + RAL Harrington 1 150mm
St. JohnÆs Nfld  Riverhead WWTP CH2M GJ Cahill 2 200mm
St. JohnÆs Nfld  Riverhead WWTP CH2M GJ Cahill 2 250mm
Lakeland Florida   Wharton Smith 3 6 inch
City of Toronto  Humber TP Digestors MacViro + CH2M Sutherland Schultz 8 200mm
City of Ottawa  Lemieux Island WTP CH2M Harrington 8 450mm
District of Muskoka  MacTier Conger Marsh WPCP TSH Peak Eng 2 100mm
City of Toronto  RL Clarke WTP CH2M Melfar Mech 3 150mm
Deep River   JP2G BJ Hass 1 100mm
Elizabethtown Illinois   2 8 inch
Region of York  Mt Albert WPCP RV Anderson Sutherland Schultz 1 100mm
Town of Blue Mountains  Craigleith WPCP CC Tatham Maple 1 250mm
Deseronto  Deseronto WPCP TSH Maple 1 100mm
City of Toronto  Highland Creek WPCP EarthTech Bennett 6 250mm
Sherkston On  Sherkston Shores STP EarthTech McCullough 3 150mm
Essa township  Angus WPCP Robinson NAC 1 200mm
Region of Niagara  Garner Rd Biosolids CH2M Tenebec 3 200mm
Orange Park Fla   1 6 inch
Brooksville Fla   1 6 inch
Petawawa  Petawawa STP Sludge storage JL Richards Greatario 2 150mm
Town of New Tecumseth   Ainley Bennett Mech 1 250mm
City of Brantford  Biosolids Storage Tanks CH2M Dover Mech 3 200mm
Town of Innisfil  Innisfil WPCP Ainley Bennett Mech 2 200mm
Owen Sound  Sludge Storage Facility Henderson Paddon Ontario Harvescope 1 150mm
Chatham-Kent  Thamesville STP Thorburn Penny C & C 1 150mm
Public Works Canada  Workworth STP P & R Peak Eng. 1 150mm
Venezuela  Lake Maracaibo STP Delcan Delcan IntÆl 102 200mm
Waterloo Wellesley WPCP Stanley Wellington 1 150mm
Central Huron  Clinton WPCP BM Ross Stonetown 1 150mm
Huron East  Seaforth WPCP BM Ross Maple 1 150mm
District of Muskoka  Gravenhurst WPCP G & S Woodbow 2 200mm
Hagersville  Hagersville WPCP RV Anderson Sutherland Schultz 4 200mm
City of Toronto  Humber TP Fenco MacLaren Bennett Mech 2 150mm
City of London  Pottersburg WPCP Fenco MacLaren Glover Hill 8 100mm
Wallaceburg  Wallaceburg WPCP G & S Glover Hill 4 200mm
Wallaceburg  Wallaceburg WPCP G & S Glover Hill 3 250mm
Wallaceburg  Wallaceburg WPCP G & S Glover Hill 3 400mm
Hagersville  Hagersville WPCP RV Anderson Sutherland Schultz 4 200mm
Clearview township  Stayner WPCP Ainley Wilson & Sommerville 2 200mm
New Tecumseh  Tottenham STP Ainley Maple 1 200mm
Simcoe County  Innisfil Twp. STP Ainley Stephenson 1 200mm
Town of Kirkland Lake  Swastika STP P & R Bennett Mech 2 150mm
City of Greater Sudbury  Azilda RV Anderson Cecchetto & Sons Ltd 1 508mm