Overview
Temporary job-site placeholders for water meters, in five sizes.
MTW Spacer Tubes are durable job-site placeholders for new construction. A Spacer Tube bridges the gap in the piping where the water meter will go, so the line keeps the correct meter lay length and thread alignment and water keeps flowing until the permanent water meter is installed.
They're made of polymer and come in five sizes, from 1" to 2.5" NPSM threads and lay lengths from 4.50" to 15.25".
Spacer Tubes are for temporary installation only. Remove the Spacer Tube and install the water meter before long-term service begins.
Spacer Tubes and the ST201
These Spacer Tubes don't replace the ST201 Spacer Tube. The ST201 is for hot water applications. These Spacer Tubes replace MTW's earlier NPT-thread spacer tubes and have NPSM threads instead.
Specifications
General
| Material | Polymer |
|---|---|
| Thread type | NPSM, both ends |
| Use | Temporary installation only; remove before long-term service begins |
Temperature
| Recommended operating temperature | 120°F (49°C) |
|---|---|
| Maximum temperature | 140°F (60°C), intermittent use only |
| High temperatures | Not for permanent or continuous high-temperature environments |
Sizes
| Part number | MTW ST0450 | MTW ST0750 | MTW ST1075 | MTW ST 2" x 12 5/8" | MTW ST 2.50 x 15.25 |
|---|---|---|---|---|---|
| Overall length (A) | 4.50" | 7.50" | 10.75" | 12.63" | 15.25" |
| Pipe thread (B) | 1" NPSM | 1" NPSM | 1.25" NPSM | 2" NPSM | 2.5" NPSM |
| Inside diameter (C) | 0.95" | 0.95" | 1.25" | 1.95" | 2.35" |
FAQ
General
On new construction sites, a Spacer Tube holds the water meter's place in the piping before the permanent meter is installed. It keeps the correct meter lay length and thread alignment, and lets water flow through the line until the meter goes in.
There are five sizes:
- MTW ST0450: 4.50" long, 1" NPSM thread
- MTW ST0750: 7.50" long, 1" NPSM thread
- MTW ST1075: 10.75" long, 1.25" NPSM thread
- MTW ST 2" x 12 5/8": 12.63" long, 2" NPSM thread
- MTW ST 2.50 x 15.25: 15.25" long, 2.5" NPSM thread
The inside diameter of each size is in the Specifications.
They're for different jobs, and these Spacer Tubes don't replace the ST201 Spacer Tube. The ST201 is for hot water applications. These Spacer Tubes replace MTW's earlier NPT-thread spacer tubes and have NPSM threads instead.
Installation
No. Spacer Tubes are for temporary installation only. Remove the Spacer Tube and install the water meter before long-term service begins.
The recommended operating temperature is 120°F (49°C), with 140°F (60°C) as the maximum in intermittent use. Don't use Spacer Tubes in permanent or continuous high-temperature environments. For hot water applications, use the ST201 Spacer Tube.