PENETRATIONS

Leak-proof penetrations require specialized fittings. We stock a range of fittings to connect pipes to molded plastic filters or vaults, and to pass pipes through rubber liners.

3" liner fitting

liner penetration
fitting

BLACK LINER PENETRATION FITTINGS: PondTechnology Liner Penetration Fittings provide the ideal means to pass a pipe through a pond liner. The liner is securely clamped between a disc on the interior and a flanged base on the exterior. Two raised sealing rings on the base provide a watertight connection without using a sealant, but if desired a bead of silicone caulk can be applied in the cavity between the rings. The ring is secured to the base with heavy-duty stainless-steel screws threaded into sealed screw pockets. Both the disc and base are made of thick black ABS, and the base has stiffening ribs. Pipe sockets are molded into the base so flexible or rigid PVC pipe can be directly glued to one or both sides. Standard sizes are 2" and 3". We also offer black adapters to convert the sockets to female threads.

bulkhead
fitting

BLACK BULKHEAD FITTINGS: Bulkhead fittings are two-part assemblies used to make penetrations in rigid plastic tanks, skimmers, and filters. The threaded male part, which has a flanged base with a sealing gasket, is inserted through a hole drilled in the tank. The female part, basically a very large threaded nut, is screwed onto the male part with a strap wrench, compressing the gasket against the tank to make a watertight seal. Bulkhead fittings have internal threads that accept adapters from either side: male by socket adapters are used to connect to rigid or flex pipe, and male by barb adapters are used to connect to corrugated hose. We stock bulkheads in 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 3", and 4" pipe sizes.

ring gasket

BLACK RING GASKETS: Ring gaskets, often called by the tradename Uniseals, offer an alternative to bulkhead fittings for penetrations through rigid plastic tanks, skimmers, and filters. When inserted through an accurately drilled hole, a pipe pushed through the gasket presses tightly against the edges of the hole to provide a watertight seal. We stock ring gaskets in 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 3", 4", and 6" pipe sizes.

BLACK BOTTOM DRAINS: PondTechnology Bottom Drains offer the ideal means to draw solids-laden water from the bottom of ponds. Water enters under a large anti-vortex dome and flows through a 4" side outlet in the base. The dome height is set by cuttinng the dome support column. Our drains are injection molded for reliability and feature flange stiffeners with sealed screw pockets for superior rigidity and watertightness. They should be set in concrete, compacted sand, or compacted crushed stone. Lay the rubber liner over the drain, cut out the drain opening, apply caulk between the rubber liner and the flange, and screw the clamping ring through the rubber into the screw pockets in the flange.

bottom drain

cross-section of bottom drain

PRICING: Call or email for pricing.

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