Pitbull Steel and Stainless Steel 4"
Submersible Pumps

Pitbull Models S4C & S4S 4” Submersible Pumps

The models S4C (steel) and S4S (316SS) are capable of pumping a wide variety of debris, solids and sludges, solvents and chemicals. Outfitted with CIPC full port check valves, these 4” units can pump a 3.75” diameter solid at low to medium flows and/or high heads. This makes the S4’s capable of handling some truly large, difficult solids. Whether long and fibrous or large and abrasive, solids easily pass through the S4’s large diameter flow path. The AP200 pneumatic panel is supplied with the pump and is fully automatic.

Applications for these PITBULL pumps are almost limitless. Wood yard sumps, coal handling sumps, ash sumps, machining chips, packing plant waste, raw sewage, battery sludge, tank farm sumps, slop oil, lime slurry, sand/silt; the list of excellent applications is extensive.

They are also available with a flow inducement option to help pull in bridging solids or viscous mixtures (great for cleaning sumps with heavy, settled solids)..

Standard units:
#S4C = a steel submersible pump with steel checks and nitrile seats.
#S4S = a 316SS submersible pump with 316SS checks and nitrile seats.

Optional examples:
#S4C/U/FI =a steel submersible pump with urethane seats and flow inducement option.
#S4S/V = a 316SS submersible pump with viton seats.

A complete pump contains: pump, inlet and discharge check valves, an AP200 control panel and 15’ of nitrile/polyester braided airlines (3)

Description of options:
‘FI’ flow inducement. This is an air powered, vacuum generator mounted to the exhaust valve of the control panel. It is operated by a manual ball valve: ‘open’ generates full suction force; with the valve ‘closed’ the pump runs as a standard, gravity fed unit

Valve seat selection:
Nitrile -Good all-purpose elastomer. Medium chemical, oil and solvent resistance, good strength, use to 170°F.
Viton  -Excellent resistance to oxidizers and solvents. Medium strength, use to 250°F.
Teflon  -Best chemical resistance of all. Inert to acids, bases and solvents. Lower cycle life, non-elastomeric, use to 300°F.
Urethane -Best resistance to abrasion. Toughest of   the elastomers, with mild chemical resistance, use to 150°F.
EDPM -Good head and acid/base resistance. 
Tougher than viton but poor solvent resistance, use to 300°F.

AIR CONSUMPTION CHART Headè êFlow 10 ft 20 ft 40 ft 60 ft 80 ft 100 ft 140 ft 180 ft 220 ft 10 gpm 2 2.4 3.2 4.1 4.9 5.8 7.5 9.3 11 20 gpm 3.8 4.7 6.4 8.1 9.9 11.6 15.1 18.5 22 30 gpm 5.7 7 9.6 12.2 14.8 17.4 22.6 27.8 33 40 gpm 7.6 9.4 12.8 16.3 19.7 23.2 30.1 37.1 44 60 gpm 11.4 14 19.2 24.4 29.6 34.8 45.2 55.6 66 80 gpm 15.2 18.7 25.6 32.6 39.5 46.4 60.3 74.1 88 100 gpm 19 23.4 32 40.7 49.4 58 75.3 92.7 110 140 gpm 26.6 32.7 44.8 57 69.1 81.2 105.5 129.7 154 Example: 80 gpm @ 20 ft TDH requires 18.7 SCFM

Commonly Asked Installation/Application Questions
How much air will it actually use?
The Pitbull matches  your incoming flow rate. So when the inflow drops to 
half, the air consumption is cut in half too. Actual air  consumption is usually much less than shown unless inflow is constant.

Where is the control panel mounted?
Place within 15’ radius of the airlines, above the pump. Up to 20’ extra lines can be ordered (consult CIPC if more is required).

Can the airlines be hard-piped? 
Yes they can, but the ID’s of our standard lines must be matched.

Can the piping be reduced?
Smaller piping causes higher head and velocity, and the pump may pass things the piping can’t. Try to avoid dropping more than one  pipe size.