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2" FlushLock Locking Well Vapor Extraction Plug SCH 40
The Koby 2" FlushLock Vapor Extraction Locking Well Plug (FL2VE) sits flush with the well casing top — the right choice when above-grade caps are not permitted in paved areas,...
$ 62.42
4" FlushLock Locking Well Vapor Extraction Plug SCH 40
The Koby 4" FlushLock Vapor Extraction Locking Well Plug (FL4VE) sits flush with the well casing top — the right choice when above-grade caps are not permitted in paved areas,...
$ 73.44
6.5" Torquer Locking Well Plug
The Koby 6.5" Torquer Locking Well Plug (T6.5) seals monitoring well casings from the inside using an internal expansion design — no metal parts means no corrosion or rust contamination....
$ 73.44
6" Torquer Locking Well Vapor Extraction Plug SCH 40
The Koby 6" Torquer Vapor Extraction Plug (T6VE) enables vapor and groundwater sampling through a vented port without removing the plug — preserving well integrity and preventing cross-contamination. Internal expansion...
$ 73.44About Koby Environmental
Koby Environmental manufactures the Torquer and FlushLock lines of locking well plugs — the hardware that gets written into remediation plans by name. Environmental consultants, Phase II ESA firms, water utilities, and remediation contractors across the country specify Koby plugs because the nylon expansion design won’t corrode in aggressive groundwater chemistry, and the liquid-tight seal holds through years of field exposure and freeze-thaw cycling.
Product Lines
Torquer — Wing-nut expansion plug. Accepts padlocks and lockout tags for chain-of-custody. Available in standard and vapor extraction configurations. Sizes from ½” to 8”, SCH 40 and SCH 80.
FlushLock — Sits flush with the well casing. Proprietary key required for removal. For paved areas, parking lots, and roadways where above-grade hardware is a trip hazard. 2” and 4”, SCH 40 and SCH 80.
J-Plug & H-Plug — Key-controlled locking plugs with unique access mechanisms for enhanced tamper security. Available in 2” and 4”.
Accessories — FlushLock keys, H-Plug wing keys, and safety lockout tag kits.
Volume Orders
We regularly supply orders of 50–200+ plugs for multi-well remediation sites and monitoring networks. Call (866) 514-3684 for volume pricing and mixed-size orders.
FAQ
What’s the difference between Torquer and FlushLock?
Torquer plugs have a wing-nut that you turn to expand the seal, and they extend above the casing. FlushLock plugs sit flush with the top of the pipe and require a proprietary key for removal — designed for wells in paved areas where an above-grade plug would be a hazard.
Are Koby plugs compatible with all PVC well casings?
Koby plugs are available in both SCH 40 and SCH 80 to match the internal diameter of your specific casing. A SCH 40 plug will not seal correctly in SCH 80 pipe. Confirm your casing schedule before ordering.
Why nylon instead of metal?
Nylon won’t corrode in aggressive groundwater chemistry. Metal expansion plugs can rust, seize, or contaminate samples. Koby’s all-nylon design is inert in the well environment and maintains a reliable seal over years of exposure.
Do you carry the FlushLock key?
Yes. The FlushLock key is sold separately and is required to install and remove FlushLock plugs. It’s the same key for all FlushLock sizes.
