Maximum Contact Tanks
swtwater.com Fiberglass Wrapped & PE Liner
SWT's Fiberglass Wound Maximum Contact Vessel with PE Liner
FEATURES:
• Convenient inlet/outlet piping connection at the top of the tank
• Inlet/outlet adapter easily accommodates the use of a vacuum breaker
• Inlet/outlet buttress thread for strength
• Full 3/4" (1.050" O.D.) pipe quick connect blowdown drain at lowest point of tank
• 360 degree drain orientation
• Black one piece polyethylene liner for impact and
corrosion resistance
• Includes 1-1/4" socket and 1-1/2" spigot PVC straight solvent fitting kit (P/N LC-V3007-07) and 1-1/4" plastic straight male NPT fittings (P/N LC-V3317)
• Bypass valve option available (P/N LC-V3006)
• 5 year limited warranty
• Tested and Certified by NSF International against NSF/ANSI/CAN Standard 61 for material requirements and NSF/ANSI/CAN 372
• Made in the USA
 
SPECIFICATIONS:
• 75 psi (517 kPa) maximum operating pressure
• 120ºF (49ºC) maximum operating temperature
• 0 maximum allowable operating vacuum
• A vacuum/pressure relief valve of adequate size
must be incorporated in the plumbing
 
 
FIBERGLASS WRAPPED RETENTION TANKS WITH PE LINER
Part
Number		 Tank
Assembly
Diameter		 Tank
Assembly
Height		 Capacity SHIPPING
Weight		 Carton
Qty
inch mm inch mm gallon liter lb kg
LC-CT120 24 607 78.5 1994 120 454 80 36 1
NOTE: This Maximum Contact Tank is designed specifically for use as a bacteriological disinfection contact tank and is not designed for use as an oxidation contact tank. The baffle diffuser assembly mounted at the bottom of the inlet distributor piping is located at the bottom of the tank for maximum chemical/water mixing and does not allow area for any buildup of precipitated or oxidized matter in the bottom of the tank.
 
 
SWT's Retention Tank Effluent Chlorine Graph
 
Average Baffle Factor: 0.56
 
Tank Volume
gallon		 Flow Rate
gpm		 T *
minutes		 T10 **
minutes		 Baffling Factor
T10/T
120 3 40.0 24.25 0.61
120 5 24.0 13.10 0.55
120 7 17.1 9.25 0.54
120 9 13.3 6.85 0.52
 
* T is the contact time (tank volume divided by flow rate).
* T10 is the time at which 10% of the influent concentration is measured at the effluent of the tank.
 
 
VACUUM PROTECTION & FLEX CONNECTORS
Fiberglass/composite pressure vessels are rated for an internal negative pressure of 5-inches Hg (17 Pa) vacuum below atmospheric. If negative pressure could ever exceed 5-inches Hg (17 Pa), an adequate vacuum breaker must be installed between the pressure vessel inlet and any valves (see illustration right). For enclosed tank applications, the vacuum breaker should be installed at the highest location in the system plumbing.

System connections to the pressure vessel must accomodate vertical expansion between side, top, and bottom openings. Either flexibility in piping or flex connectors, as shown here, are recommended.
SWT Vacuum Breaker and Flex Connector installation diagram

See SWT Vacuum Protection
and Flex Connector Products
 
 
 
Safe Water Technologies, Inc.
996 Bluff City Boulevard
Elgin, IL 60120 USA
  
 
Telephone: +1.847.888.6900
Facsimile: +1.847.888.6924
E-mail: info@swtwater.com
https://www.swtwater.com

Last Updated: April 1, 2024