Support for vertical (riser) pipes, preventing movement and ensuring proper alignment in plumbing, HVAC and fire systems.
What the riser clamp does on a fire line, and how to specify it.
The riser clamp is for the vertical pipe, the riser. It grips the pipe at a fixed point and stops it moving or shifting out of alignment as the run climbs. A riser carries the line between floors and between the pump room and the branches above, so holding it true at each support is what keeps the whole vertical run straight and the connections under it from taking sideways load.
The same clamp work that holds a riser in a fire system holds it in plumbing and HVAC, which is why it is a general item in the range. On a fire line the marked versions carry the fire rating, so specify the marked clamp where the design requires it.
Carbon steel, electro-galvanized, with hot-dip galvanizing available on request for the harsher locations. The marked riser clamp is rated to 343 degrees C (650 F) and is FM Approved and UL Listed for fire protection service.
Send the line with the rest of the assembly rather than as a single part. State the size against the pipe outside diameter it serves, the finish, and the count. Pair it with the matching threaded rod, nuts, washers and anchors from the same range, and flag whether the design needs the fire-rated, FM/UL marked version, so the support arrives with the pipe instead of chasing it later.
Yes. The marked riser clamp is FM Approved and UL Listed, rated to 343 degrees C (650 F).
Yes, hot-dip galvanizing is available on request for the riser clamp; the standard finish is electro-galvanized.
It holds the riser at a fixed point, preventing movement and keeping the vertical run aligned.
Selection guides and field notes on fire protection pipe, fittings and supports.
A fire sprinkler system can be perfect on the design paper and still fail in the field if the pipe is not held up properly. The pipe, the fittings, the valve, a…
Read →2026-09-30Pipe hanger spacing is the quiet part of a fire line spec. The hangers are there, the pipe is up, and nobody thinks about the interval again until the line star…
Read →2026-10-01An earthquake does not care about your sprinkler system. It shakes the building, the building moves, and the pipe moves with it. If the pipe swings far enough, …
Read →2026-10-03Nobody photographs the hangers on a fire line. Everybody inspects them. I have stood on site while an inspector ran a finger down the support schedule, then wal…
Read →2026-10-12An earthquake does not break a sprinkler pipe. It moves the building around the pipe. The joint that lets the pipe move a little, and the brace that stops it moving too much, are the two halves of the same system.
Read →Send your bill of materials or drawing — we confirm spec, cert and lead time, then ship the full package.
