Plugs and Caps

American Standard Plugs

Plugs | Ductile Iron Push-On Restrained Plugs | Push-On Plug Assembly Instructions | Caps | Back to Top

16"-54"* Fastite Plugs		48"-64" Lok-Ring Plugs

4"-12" Flex-Ring Plugs		14"-24" Flex-Ring Plugs		30"-42" Flex-Ring Plugs

ADIP Table No. 4-13

Notes:
+ Higher pressure ratings are available on special applications. Check AMERICAN.
++ 16"-24" Flex-Ring Plug are rated 350 psi.
*All 4"-20" Fastite or Push-On plugs are furnished with internal set-screw restraint. See Table No. 4-13 for descriptions and ratings.
Fast-Grip® gaskets should not be used with Fastite plugs if disassembly would ever be required.
Standard Fastite Plugs 30"-54" are satisfactory for tapping up through 2" NPT. For larger taps in these sizes and for all size taps on 24" size, plugs are furnished with special boss, when specified. Except as noted below, taps are furnished only when specified.
Steel eyebolts with 1" or 1-1/2" NPT male pipe threads can be obtained from AMERICAN to be threaded into these standard tapped holes to aid in the non-destructive plug removal (pulling or jacking) operations.
14"-64" Lok-Ring and Flex-Ring plugs have one 1" (14"-24" sizes) or one 1-1/2" (30"-64" sizes) boss and tap (plugged) at invert and lifting eyes 180° from the boss. These taps facilitate testing and disassembly. If a different size or location of taps is required, it must be specified.
See General Notes.

ADIP Table No. 4-14

Notes:
The Fastite Restrained Plug provides positive locking against joint separation and allows for future removal. This plug is also useful as a test plug.
Fastite Conductive gaskets should not be used with Fastite Restrained Plugs.
See General Notes.
If desired, a 2" NPT tap can be ordered in 6"-20" plugs. A 1" tap can be supplied in 4" plugs.

Push-On Plug Assembly Instructions

The pictures illustrating these instructions are of small-diameter, restrained Fastite or Push-On plug assembly; however, other sizes and other push-on-type joint plugs may be assembled/disassembled with similar principles. In the case of various restrained joint plug designs, it is generally necessary to lock the plugs in accordance with the respective joint assembly instructions when restraint is desired, and also to appropriately unlock same if/when it is desired to remove them.

1. Clean the pipe socket of any foreign matter and insert the gasket. Lubricate the end of the plug and inside surface of gasket with a thin film of lubricant. A non-soluble lubricant, such as Fastite underwater lubricant, may be used to facilitate removal of the plug after testing.
2. Place the tapered end of the plug in contact with the gasket in the pipe. Push the plug "home" into the pipe socket with a bar, lever, or jack, as required.
3. Larger sizes are easily assembled by placing another pipe against the plug and pushing or pulling the plug "home" using standard Fastite assembly tools or methods.
4. Firmly install the locking means if needed for restraint in the case of small-diameter Push-On or Fastite Restrained Plugs, tighten all cap screws inside the plug, and the assembly is then complete.

To remove the plug, release any locking mechanism present in accordance with normal joint disassembly instructions. (In the case of Push-On or Fastite Restrained plugs, back out the cap screws.) Then, pull or jack the plug out of the socket. In the case of small-diameter, Push-On or Fastite Restrained plugs, the plug can often be pried out with bars placed between the pipe bell and the cast lugs on the plug.

ADIP Table No. 4-15

Notes:
+Higher pressure ratings are available on special applications. Check AMERICAN.
**16"-24" Flex-Ring Caps are rated 350 psi.
Standard Fastite Caps 30"-64" are satisfactory for tapping up through 2" NPT. For larger taps in these sizes and for all size taps on 16"-24" sizes, caps are furnished with special boss, when specified. Except as noted below, taps are furnished only when specified.
16"-64" Lok-Ring or Flex-Ring caps have one 1" (14"-24" sizes) or one 1 1/2" (30"-64" sizes) boss and tap (plugged) at invert and lifting eyes 180° from the boss. These taps facilitate testing or disassembly. If different size or location of taps is required, it must be specified.
See General Notes.