MEDIUM VELOCITY WATER SPRAY NOZZLE

MAXIMUM WORKING PRESSURE 12 Bar (175 PSI)

END CONNECTION ½” BSPT (½” NPT OPTIONAL)

INCLUDED WATER SPRAY ANGLE FOR EACH K-FACTOR 160°, 140°, 120°, 110°,100°, 90°, 80° & 65°

FINISH:- MV-A & MV-AS Natural Brass finish, Nickel-Chrome plated, Electroless Nickel plated, Epoxy powder coated. MV-B, MV-BS & MV-E Natural finish

APPROVALS UL Listed, FM Approved & LRS-Lloyd’s Register Approved Blow-off Plug- FM Approved For Approval data refer Table-II

The HD® Medium Velocity Water Spray Nozzles
are open type (non-automatic) nozzles, designed
for directional spray application in fixed fire
protection system.
Medium velocity water spray nozzle has an
external deflector, which discharges water in a
directional cone shaped pattern of small droplet size.
The water is uniformly distributed over the surface to
be protected.
MV Nozzles are effectively designed to apply water
to exposed vertical, horizontal, curved and irregular
shaped surfaces to allow cooling to prevent
excessive absorption of heat from external fire
and avoid structural damage or spread of fire. In some
application nozzles may be installed to control or
extinguish the fire depending on water design density
as per applicable codes. The nozzle is used in deluge
water spray system for special hazard fire protection
application.
As the design and intent of specific water spray system
may vary considerably, MV nozzle is made available in
several combinations of orifice sizes (K-factors) and
spray angles.
The minimum desirable pressure to achieve a
reasonable spray pattern is 1.4 Kg./Sq.cm. The water
distribution pattern as shown in the graph in following
pages is at an average pressure of 2.0 Kg/Sq.cm. The
change in pressure between 1.4 to 3.5 Kg./sq.cm.
does not affect considerable change in spray angle.
The spray pattern shown is with indoor application.
System designer must consider wind velocity while
designing the system for outdoor application. Field
obstruction if any affecting the spray pattern of the
nozzle must also be considered. The nozzle may be
oriented to any position as deemed necessary to
cover the hazard.