Industrial/Duct Model Sprinkler Connections
Ductwork Specifications

New Ductwork Installation

FlexHead Model 1036, sprinkler assemblies in acid and solvent exhaust ducts, is manufactured by FlexHead Industries and approved by Factory Mutual Research. Each FlexHead assembly unit consists of 1' IPS flexible stainless-steel hose, a two-part mounting block, and EPDM gasket, a 165°/212° F brass, wax-coated sprinkler head and an assembly of two 4 mil polybags.

The unit is supplied and installed as per manufacturer's recommendations by the HVAC contractor as part of the fiberglass duct systems. The ductwork manufacturer installs the bottom mounting blocks in the factory in accordance to manufacture guidelines. The HVAC contractor is responsible for verifying the integrity of the bond between the mounting block and the duct. The HVAC contractor is also responsible for the installations of the FlexHead connections to the mounting block.

The fire protection contractor is responsible for final connection and fill and test of the FlexHead connection to sprinkler sub-main via a 1' IPS union supplied by the fire protection contractor in accordance to NFPA guidelines.

Retrofit Existing Ductwork

Sprinkler assemblies in acid and solvent exhaust ducts, FlexHead Model 1036, is manufactured by FlexHead Industries and approved by Factory Mutual Research. Each FlexHead assembly unit consists of 1' IPS flexible stainless-steel hose, a two-part fiberglass mounting block, and EPDM gasket, a 165°/212° F brass, wax coated sprinkler head and an assembly of two 4 mil polybags.

The unit is supplied and installed as per manufacturer's recommendations by the HVAC contractor as part of the fiberglass duct systems. The bottom mounting blocks are installed in the factory in accordance to manufacture guidelines. The HVAC contractor is responsible for verifying the integrity of the bond between the mounting block and the duct. The HVAC contractor is also responsible for the installations of the FlexHead connections to the mounting block.

The fire protection contractor is responsible for final connection and fill and test of FlexHead connections to sprinkler sub-main via a 1' IPS union supplied by the fire protection contractor in accordance to NFPA guidelines.