The FlexHead® Dry Pendent System, DPS-UHO-1, product provides a flexible connection for cold storage and freezer applications.

The FlexHead® product, DPS-UHO-1, provides the fire sprinkler contractor a system that is quick and economical to install saving time and money. Perfect for either new installs, or repairs to existing hard pipe applications, this system is designed for wet sprinkler systems and is installed with a dry pendant sprinkler head. The FlexHead® UHO-1 system is FM approved to accommodate multiple dry pendant sprinkler manufacturers including Reliable Sprinkler, Tyco, Globe Sprinkler, and Viking.

In a typical cold storage/freezer installation the dry pendant sprinkler head is fixed and stationary, if there is any movement on top of the cooler/freezer (maintenance workers) the seal between the cooler/freezer and the dry pendant sprinkler head can be broken potentially damaging the dry pendant sprinkler head by allowing ice buildup on the sprinkler head rendering it inoperable. With the FlexHead® DPS-UHO-1 system the dry pendant sprinkler moves and flexes with the structure while the seal stays intact protecting the integrity of the dry pendant sprinkler head.

The fire sprinkler system installers are no longer restricted to the fixed lengths of black steel pipe during the final connection to the freezer but now have the option of installing a flexible stainless steel hose that is available in up to 6′ in length.

Besides offering a quick and efficient installation, the FlexHead® DPS-UHO-1 system allows the fire sprinkler system installer the option of ordering the most cost effective length of dry pendant sprinklers which reduces inventory costs for the sprinkler contractor, speeds installation, increases productivity, and saves money!

Friction Loss Data

FlexHead Model #Outlet Size
in (cm)
Assembly Length
Ft (m)
Max #
90-Deg Bends
(7 in. Bending Radius) FM
F (C)
Maximum Rated Pressure
psi (kPa)
Max Equivalent
Length of Schedule 40,
Nominal 1 in
Diameter Pipe
Ft (M)
1 in. nominal diameter flexible metal hose for providing a connection with Dry Pendent Sprinkler with freezer bracket assembly for automatic sprinklers in cold storage applications. Approval is limited for use with 20XX-DPS-UHO1 manufactured by FlexHead Industries Inc.
The Model UHO-1 Open Hub is a one piece universal open hub and will be attached to the top of the ceiling by two Fab-Lok Fasteners.
For Reliable, Tyco, Viking, and Globe dry pendent data see manufactures website and/or FM approval guide.
FlexHead products are intended for use in hydraulically designed wet, pre-action, deluge or dry pipe sprinkler per NFPA 13, 13R, and 13D guidelines.
The hydraulic loss of FlexHead should be included in the hydraulic design calculations the same as a valve or fitting.
Intended for use for direct connection to Fire Sprinklers and has limited flexibility.
These models are Approved for use in use in cold storage application (freezer, cold chamber) and combine an Approved flexible sprinkler hose and an Approved Dry Pendent sprinkler. UHO-1 is required to connect the flexible sprinkler hose to the dry sprinkler.
5.6 K8.0 K11.2 K
2024-DPS-UH011 (2.54)2 (0.6)1300º (148º)175 (1205)18.4 (5.6)7.7 (2.3)7.6 (2.3)
2036-DPS-UH011 (2.54)3 (0.9)2300º (148º)175 (1205)26.6 (8.1)11.5 (3.5)11.5 (3.5)
2048-DPS-UH011 (2.54)4 (1.2)3300º (148º)175 (1205)30.3 (9.2)15.3 (4.6)15.4 (4.7)
2060-DPS-UH011 (2.54)5 (1.5)4300º (148º)175 (1205)35.8 (10.9)19.1 (5.8)19.3 (5.9)
2072-DPS-UH011 (2.54)6 (1.8)4300º (148º)175 (1205)45.6 (13.9)23 (7.0)23.2 (7.1)


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