BERMAD
Fire Protection
Strainers
FP-60F-D/DV
Design Engineer Guide
The BERMAD FP-60F-D/DV Basket strainers are for use in firewater supply and are capable of preventing the entrance
of solids that might block or clog fire protection nozzles or other sensitve devices.
Install the FP-60F-D/DV strainer upstream of the sprinkler valve, deluge valve, pressure control valve or any other
debris sensitive system device.
The Strainer must be located where there is adequate clearance for removal of the basket screen assembly to enable
easy extraction and inspection of the strainer basket.
Install the strainer such that there will be adequate drainage for the release of water when opening the strainer for
service and for the dirty water exhausted during the cleaning of the strainer screen using the flushing valve.
The flushing drain connection should be typically fitted with an appropriately sized normally closed valve and drain piping.
Where a flushing valve is to be employed, the FP-60F-D/DV Basket Strainer sizes 3" to 12" are recommended to be installed
in a horizontal position with the strainer cover and flushing valve to the side. To facilitate flushing for 14" and 16" sizes
installation is recommended to be vertical.
The strainers shall be installed and maintained in compliance with the NFPA-25 standard in the addition to the instructions
given by the authorities having jurisdiction.
The NFPA-11 standard requires that a listed strainer with a screen area to pipe cross section area ratio of 10:1 shall be used with
foam proportioners or foam generators, and should be installed in the water pipeline upstream of the water control valve.
The NFPA 13, 15 and 16 standards stipulate that a Listed Strainer shall be provided in the main pipeline of all systems
utilizing nozzles with waterways less than
3
⁄
8
" (9.5 mm) and for any system where the water is likely to contain obstructive
material. Strainers shall be capable of removing from the water all solids of sufficient size to obstruct the nozzles.
Engineer Specifications
The Fire Line Strainer shall be a basket type strainer UL listed.
The strainer shall be with high flow capacity and low pressure loss.
The strainer shall include a flushing valve capable of quickly and efficiently cleaning the strainer screen without removing
the strainer cover, or closing system pressure.
The strainer body and cover shall be ductile iron ASTM A536 65-45-12 with anti-corrosion Fusion Bonded High Build
Epoxy RAL 3002 coating internally and externally, all other wetted parts shall be stainless steel 316.
The screen shall be inline removable basket type, made of stainless steel 316 with screen holes diameter of 3.2 mm
(
1
/
8
"), meeting the requirements of the NFPA codes and standards. The Strainer basket screen area shall be at least 10:1
compared to the cross-sectional area of the pipeline.
Strainer maintenance, inspection or service shall be carried out in-line and without disassembly of the strainer body
from the pipeline. The Strainer shall be supplied pre-assembled with stainless steel bolting and hydraulically tested by
a factory certified by the ISO-9001 standard.
Cross Section Showing Inline Fushing of the Filter Screen
