PLUMBING e Continued from p 34
and engineering team asked themselves the following questions. The answers pointed the way. •What would be the best type of
motor? The Omnivore features a top
quality US made motor. The motor was designed specifically for tough grinding applications. It has oversized windings which enable cool operation for maximum endurance. When the going gets tough the solid state starting circuit will kick in to assist a brutal grinding job. It also has a tough hermetically sealed thermal overload for optimum motor protection. •How should the cutter system
work? A good cutting system will make
the finest slurry possible, without clogging or jamming. The concept was smaller and more cuts per revolution, taking less torque to do it. The V-Slice®
Technology was 40
invented to do this. Each revolution potentially cuts 108 times. This is all made possible by the V-shape working in conjunction with a specifically designed rotary cutter. The 440 SS Cutter Plate is
hardened to approximately 58 Rockwell C. Its single piece construction features nine V-Slice® arrangements, and nine exclusion slots designed to self clean the cutter, It also has 4 spirals which remove
PLUMBING PRODUCTS
debris from underneath the impeller. All of these features reduce the potential for problems that can occur with typical cutter designs. The cutter’s sleek design has a
recess for the shaft bolt, which reduces a known problem of waste materials wrapping around the cutter. This eliminates problems of flow reduction and motor overloading causing possible pump failure. The bottom of the rotary cutter is open at the back so that debris does not impact under the cutter. Its long arc design reduces the required cutting torque force. •What would be the best
impeller? Non-corroding 316 stainless steel
is the material of the impeller. It has back pump-out vanes for solids clearing while most competitive grinders do not have a stainless steel impeller. The impeller design is efficient enough to produce the required head-flow and overcome known clogging issues within the volute. •What problems are currently
known with grinders in the field? Volute clogging: Other grinder
pumps have a cutwater (a sharp corner at the discharge to improve impeller performance) inside the volute which can cause solids to build up and clog the discharge. The Omnivore does not have a cutwater,
Leveling floor drains
New leveling floor drains and cleanouts feature patent pending pitch and height adjustment to reduce installation time and improve drainage quality. The innovative cast iron drain
Press fittings for steel pipe
FASTLOCK, a complete line of malleable iron press fittings for Schedule 10–40 black and galvanized steel pipe, installs quickly and easily with press jaws. No need for threading dies, pipe sealants or pipe wrenches. Connect without wrenches, so they reduce stress on joists and hangers during installation. Available in 1/2" – 2". IAPMO and NSF 61-4 certified for use with water, HVAC and compressed air.
CIMBERIO VALVE e Circle 45 on reader reply
(Z415-BZ) and cleanout (Z1400-BZ) enable contractors to align the strainer or cover to the finished floor after the pour. Reduces costs associated with repairing improperly set drains and can eliminate water pooling near the drain.
ZURN SPECIFICATION DRAINAGE GROUP
e Circle 46 on reader reply
setting the toilet. Raised knobs on the underside of the foot prevent movement after setting. Bolts are machined to facilitate a clean break- off at the desired level, eliminating the need to saw the bolt at the proper length.
CLEAN-FIT PRODUCTS e Circle 47 on reader reply
but instead has a smooth, wide-open discharge. Extensive testing has proven this to allow slurry to flow freely out of the volute, eliminating all clogging.
Proven performance With literally tens of thousands of
Liberty grinders now installed and operating all across North America, the Omnivore®
be a leader in performance and quality. In one particularly unique application, the Omnivore®
grinder
was known to have saved a school’s very unusual tradition in Ohio. The high school’s football team celebrated their victories by flushing their gym socks down the toilets after each winning game. Unfortunately, this caused the existing grinder pump to jam and thus required the school’s maintenance team to pull the pump to unjam it. Eventually, this lead to the school banning this time honored tradition due to maintenance costs. That is, until they saw an actual Omnivore®
grinder demonstration at
an industry trade show. They installed the Liberty grinder with patented V-Slice®
cutter technology
and with no jamming problems to date, the tradition continues! Information provided by Liberty Pumps. For more info,
www.libertypumps.com.;
E-Z closet bolts
Blue Monster™ Advantage™ closet bolts are sold as kits and simplify toilet installation. Unique broached tip design allows installers to tell the direction of the bolt’s foot while
series has proven to
phc february 2011
www.phcnews.com
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