Free Water Knockouts

Avoid the frequent replacement of your steel knockouts with a fiberglass knockout from ESPS!  Our current lines of knockouts are built for 50 lbs. of working pressure and each tank is tested to 75 lbs. before it leaves the yard.  Every tank comes mounted on two fiberglass stands.  These tanks are engineered with a 10:1 safety factor and manufactured with state of the art equipment to insure a quality product. See below for current sizes and accessories.

Standard Sizes:
Diameters – 30”, 36”, 48”, and 72”
Lengths – 10’, 15’
Other sizes available on request.

Every Knockout is sold with:
• Female Threaded Fittings
(flanges available)
• Trunion
• Float
• Lift Brackets
• Tank Information Plate
 
Other Options:
Complete Valve Kit
Concrete Pads
Color

30” x 10’ Knockout plumbed with optional valve kit and concrete pads