AMT 1609-002-00 Molded Buna-N Flapper Valve

AMT 1609-002-00 Molded Buna-N Flapper Valve

The AMT 1609-002-00 is the genuine molded Buna-N flapper valve used in AMT sewage pumps. A flapper valve is the simplest kind of check valve there is — a moulded rubber flap that swings open when the pump pushes liquid one way and drops shut the instant flow tries to reverse. No spring, no linkage, nothing to seize. Its simplicity is exactly why it is used on liquids full of solids and stringy material that would jam a mechanical check valve solid.

Because it is rubber and it slams shut thousands of times a day, it is a wear part with a predictable life. What you look for is a flap that has gone stiff and glazed, one that has developed a crack or a tear at the hinge, or one that has taken a permanent curl and no longer lies flat on its seat. Any of those and the valve stops sealing on the return stroke, which shows up as lost prime, reduced discharge, backflow into the sump, or a pump that cycles far more than it should.

The flap is moulded in Buna-N (nitrile), the standard compound for sewage and wastewater duty: flexible enough to seal against a mildly imperfect seat, tough enough to resist abrasion from grit, and resistant to the oils and mild chemistries that end up in a sump. This valve is listed for the AMT 393A-95 and 393B-95 sewage pumps. Confirm the part number against your parts breakdown before ordering, as AMT uses several flapper sizes across its range.

Key Features

• Genuine AMT (Gorman-Rupp) service part — moulded to the original pattern
• Buna-N (nitrile) construction for abrasion resistance and flexibility in sewage duty
• One-piece moulded flap — no spring or linkage to seize, jam or corrode
• Handles solids and stringy material that would foul a mechanical check valve
• Direct replacement — no trimming or fitting required

Applications

• AMT 393A-95 sewage pumps
• AMT 393B-95 sewage pumps
• Preventing backflow and loss of prime on the return stroke
• Replacing a flap that has gone stiff, cracked, torn or curled
• Marine, dockside, sump, sewage and wastewater service

Specifications

• Brand: AMT (Gorman-Rupp)
• Manufacturer Part Number: 1609-002-00
• Part Type: Flapper valve (check valve)
• Material: Buna-N (nitrile), moulded
• Service Note: Wear item — replace when stiff, cracked, torn or curled
• Condition: New