Victaulic Catalog
IPS Carbon Steel Pipe
Hole Cut Products
Hole Cut Piping System
Developed by Victaulic to provide a fast, easy mid-pipe outlet without welding.

The bolted mechanical branch connection concept was developed by Victaulic to provide a fast, easy mid-pipe
outlet without welding. A hole is first cut or drilled in the pipe to receive the outlet. Positioning in the hole is
enhanced witheither a locating collar (Styles 920, 921 and 929) or a toe and heel (Styles 923 and 924) and
provides a smoothoutlet area for maximum flow characteristics.
The gasket is molded to conform to the pipe O.D. and is of pressure responsive design. Gasket seal is further
enhanced by pressure or vacuum in the line.
Styles 920,921 and 929 are ideal for a variety of branch connections. Styles 923 and 924 provide a weldless
connection for a variety of gauges, drains and thermometers.
NOTE: Victaulic female threaded products are designed to accommodate standard ANSI male pipe threads only.
Use of male threaded products employing special features such as, probes, dry pendant sprinkler heads, etc.,
should be checked with the Victaulic product with which they are to be used to verify that they are, in fact,
suitable. Failure to verify suitability in advance may result in difficulties in assembly or leakage.
Victaulic hole cut products must be installed on the true centerline of the pipe. Vic Hole Cutting Tools are
recommended for preparing pipe to receive all Victaulic hole cut products.
Request 11.01.
Styles 920 & 921
Mechanical-T
Bolted Branch Outlet
![]() Style 920 | ![]() Style 921 | ![]() Style 920 Cross |
Victaulic Mechanical-T Outlet provides a direct branch connection at any location a hole can be cut in pipe. The
hole is cut oversize to receive a "holefinder" locating collar which secures the outlet in position permanently. A
pressure responsive gasket seals on the pipe O.D.
Cross-type connections can be achieved with Style 920 Mechanical-T by utilizing two upper housings of the
same size, with the same or differing branch size connections.
All sizes of Style 921 are rated at 300 PSI (2065 kPa) on steel pipe. Contact Victaulic for recommendations on
others types of pipe. Style 921 is not recommended for use on PVC plastic pipe.
Style 920 Mechanical-T Outlet is available with grooved or female threaded outlet. Specify choice on order. Units
are supplied painted with plated bolts. Galvanized housings are available, supplied with plated bolts.
All sizes of Style 920 are rated at 500 PSI (3450 kPa) working pressure on steel pipe. Style 920 may also be used
on high density polyethylene or polybutylene (HDP) pipe. Pressure ratings on HDP are dependent on the pipe
rating.Contact Victaulic for ratings on other pipe. Style 920 is not recommended for use on PVC plastic pipe.
Style 921 Mechanical-T Outlet is supplied with a female threaded outlet only, painted housing and a plated "U"
shaped bolt which serves as the lower housing. Because of this design, Style 921 is not recommended for use as
across connection. Galvanized housings are available.
Standard piping practices dictate that the Mechanical-T Style 920 and/or Style 921 must be installed so that the
main and branch connections are a true 90° angle when permanently attached to the pipeline surface.
Request 11.02.
Styles 920 & 921
Mechanical-T
Bolted Branch Outlet
Performance

| Nom. Outlet Size Inches/mm | Cv | Pipe Branch | Nom. Outlet Size Inches/mm | Cv | Pipe Branch | ||
| Grvd. Feet/m | Female Thd. Feet/m | Grvd. Feet/m | Female Thd. Feet/m | ||||
| 1/2 15 | 17 69 | - - | 2.0 0.6 | 2 50 | 100 379 | 9.0 2.7 | 10.5 3.2 |
| 3/4 20 | 21 79 | - - | 4.0 1.2 | 2 1/2 65 | 135 511 | 11.0 3.4 | 12.5 3.8 |
| 1 25 | 25 95 | - - | 5.0 1.5 | 3 80 | 200 757 | 13.5 4.1 | 15.5 4.7 |
| 1 1/4 32 | 45 170 | 5.5 1.7 | 6.0 1.8 | 4 100 | 400 1514 | 20.0 6.1 | 22.0 6.7 |
| 1 1/2 40 | 60 222 | 7.0 2.1 | 8.0 2.4 | ||||
Values for flow of water +60°F (+16°C) for 1 PSI (6.9 kPa) pressure drop in Gallons per Minute (Liters per Minute).