The Monitor residential line covers the complete domestic and rural well head: well caps that seal and protect the casing, cap cable seals and snorkel vents that keep the well breathing and flood-safe, pitless adapters and pitless units that make the sanitary below-frost service connection, tank tees and pipe fittings that tie the system to the pressure tank, and at-the-well controls and pressure switches that run it. For older and off-grid systems, Monitor still builds cast-iron hand pumps, drinking fountain pumps, cylinders, flanges, and pump rods, and frost-proof yard hydrants.

Monitor water-passage products are made in the USA, certified to NSF/ANSI 61 and 372 for potable-water contact and lead-free content, and conform to Water Systems Council PAS-97 (2017). Manufacturing is ISO 9001:2015 certified, and many products are available AIS / BABA compliant by request for projects with domestic-content requirements. Watermain Supply pairs the hardware with engineering-led selection so the cap, adapter, pitless unit, or hydrant that ships is matched to your casing size, bury depth, and duty.

Building a municipal or industrial well instead? See our Monitor Pitless & Booster Systems page for high-capacity pitless units and pitless booster stations, and our Baker Water Systems overview for the full Baker line.

A well cap seals the top of the casing against surface water, insects, and debris while giving the vent and pump cable a protected path in and out. Monitor builds the full range — simple ventilated caps for breathing wells, two-piece Turtle and Premium Watertight caps that seal the casing with an O-ring or compression gasket, a hinged locking cap for tamper resistance, lightweight aluminum caps, and a threaded jet pump cap.

Cast-iron caps are gray iron with a green oven-dried finish and stainless hardware; watertight models conform to Water Systems Council PAS-97 (2017). Select by measured casing outside diameter — from 3 in jet casings up to 7-5/8 in — and by whether you need a vented or a sealed, watertight closure.

In low-lying areas where spring rain and flooding can submerge the well head, the Monitor Snorkel Well Vent raises the vent opening on a length of 1-1/4 in NPT pipe and, used with a Premium Watertight cap and cap cable seals, keeps the vent sealed against up to 20 ft of standing water.

Buy the vent on its own to add to an existing watertight cap, or as a complete snorkel vent and cap kit sized to your casing. Certified for 10 State Code, Michigan, and Wisconsin.

A tank tee is the manifold between the pump discharge and the pressure tank, carrying the ports for the pressure switch, gauge, relief valve, and drain. Monitor Break-A-Way tank tees are machined from lead-free red brass with Type L copper tube and stainless lock screws, in 1 in and 1-1/4 in sizes with several port configurations and end connections.

The Pump Control Tank Tee is the flexible option — it can be located anywhere in the piping so the switch and gauge move above the floor, and it adapts to almost any 1 in discharge tank. All conform to NSF/ANSI 372. Choose the pipe size, port configuration, and end connection to match your tank and switch.

For deep-well jet systems that run concentric piping, Monitor makes the fittings that terminate and route the pipe near the pump. The Concentric Seal Cross ends the concentric run with two built-in tappings that eliminate at least one large tee, and the Concentric Ball Elbow raises the pipe terminal to a set elevation above the floor.

Select by pressure-pipe size and, for the seal cross, the suction-pipe seal size.

These are the working parts of a hand-pump system. The cylinder is the all-brass, leather-plunger assembly that goes down the well below the water table; the pump flange stabilizes the pump stand on the casing, in standard, sealed, and vermin-resistant offset styles; and the pump rod (sucker rod) is the mechanical link between the pump lever and the plunger.

Cylinders are threaded 1-1/4 in NPT and conform to NSF/ANSI 372. Size the cylinder to your flow and depth, the flange to your casing inside diameter, and order enough pump rod to set the cylinder 15 ft to 20 ft below water plus a coupling.

An at-the-well control kit places the pressure switch and controls inside the well casing, so an entire automatic water system can be installed at the well head with minimal wire and piping. Monitor offers plug-in kits for submersible and for reciprocating-plus-submersible pumps, and a one-size screw-in kit, each available with an all-weather pressure switch or without.

Kits are sized to the pitless-unit bury depth and rated to 120 psi maximum; they conform to NSF/ANSI 372. A pressure relief valve is recommended on all installations, and the matching control fluid is stocked.

The hardware that gets a pitless unit and drop pipe into the well correctly. Welding nipples and pitless connectors adapt threaded and unthreaded casings to the unit; swagged nipples step the casing up to a larger pitless size; and the pipe holder and pipe elevators support and lift steel drop pipe safely during pump installation and removal.

Select by well and pipe size to match your pitless unit and drop pipe.

Monitor equipment completes and protects private and shared water wells for homes, cabins, farms, and ranches; supplies livestock and irrigation water; serves parks, campgrounds, and roadside stops with drinking fountain pumps and yard hydrants; and backs up powered systems with off-grid and emergency hand pumps. Whether you’re drilling a new well, replacing a failed cap or pitless unit, adding a frost-proof hydrant, or restoring a classic hand pump, the Monitor line covers the well head end to end.