Customer Service
1-877-810-4116
To visit our CT sample showroom, please call 1-877-810-4116 to schedule an appointment. Store pickups are available at our CT warehouse shipping dock.
Purchase $1,000 of Aluminum or Galvanized Steel commercial fittings and receive a 25% discount on Aluminum and Galvanized Steel pipes. Discount will be applied during checkout.
KK18 Internal Coupling
An internal spigot providing a flush joint between two pipes of the same diameter. Not as strong as KK14 and must not be used where a direct tensile load is applied. This fitting can only be used with Schedule 40 steel pipe. Danger: KK18 fitting must not be used as a load bearing joint.
| Part | Weight | A | D | E |
| 18-6 | 0.57 lbs. | 6 | 2.99 in. | 0.79 in. |
| 18-7 | 0.84 lbs. | 7 | 2.99 in. | 0.79 in. |
| 18-8 | 1.19 lbs. | 8 | 3.74 in. | 0.79 in. |
Material/Finish
Pipe Size
SKU
Model
Description
Price
Qty
Unit
Galvanized Steel
1"
KK18-6
Please Call for Availability
18-6
Internal Coupling Galvanized Steel 1" IPS (1.38" ID)
1-1/4"
KK18-7
Please Call for Availability
18-7
Internal Coupling Galvanized Steel 1-1/4" IPS (1.72" ID)
1-1/2"
KK18-8
Ships within 24-48 hours
Local pickup available
18-8
Internal Coupling Galvanized Steel 1-1/2" IPS (1.94" ID)
