18
Shield - High Velocity Water Spray Nozzle
Fire Fighting & Building Service Products
Shie
ld/2
005
Shi
eld
rese
rves
the
right
to c
hang
e th
e co
nten
ts w
ithou
t not
ice.
Model : SDHV-A Without strainer: SDHV-AS with strainer
TECHNICAL DATA:
RATED WORKING : 12.3 Kg./Sq.Cm. (175 PSI)PRESSURE
MAXIMUM EFFECTIVE : 3.5 TO 10.5 Kg./Sq.Cm.WORKING PRESSURE (50 to 150 PSI)
END CONNECTION : 3/4" BSPT(3/4" NPT OPTIONAL)
MATERIAL : Housing & Scroll-Brass IS : 291
INCLUDED WATER : SPRAY K-FACTOR SPRAY ANGLE AND ANGLE METRIC (US)K-FACTOR 75º 22 (1.54)
80º 18 (1.26)90º 32 (2.24)100º 26 (1.82)
WEIGHT : 0.170 Kg. (approximately)
FINISH : Brass Finish Nickel Chrome Plated (optional)
APPROVALS : UL Listed and TAC approved
ORDERING Specify K-Factor; spray INFORMATION angle and finish.
MAINTENANCEThe spray nozzle must be handled with due care. Forbest results, the nozzle should be stored in theoriginal packing in which it has been shipped. It isadvised to ship the nozzle in the same package infuture transit. Nozzle which is visibly damagedshould not be installed. Use Teflon tape or soft threadsealant on the male thread of the nozzle. It isrecommended that the water spray system beinspected by an authorised technical personnel. Thenozzle must be checked for corrosion, external andinternal obstruction, blockage if any. The nozzleshould be cleared or replaced if required. The systemmust be operated with optimum water flow at leastthree times in a year or as per the provision ofNFPA/TAC or local authority having jurisdiction. Theowner is solely responsible for maintaining thewaterspray system and components therein, so that itperforms properly in actual condition.
Shield High Velocity Water Spray Nozzles are internalswirl plate type open nozzles designed for use in fixedwater spray or deluge system for the fire protectionapplication.
These nozzles produce solid, uniform and dense coreof high velocity water spray to effect fire control.Nozzles are normally used to cool the surface as wellas for extinguishment. Nozzles are typically used forDeluge protection of special hazards such as oil filledtransformers, switch-gear, chemical process equip-ments, conveyor system and flammable liquid storageareas..
The minimum desirable pressure to achieve a reason-able spray pattern is 3.5 Kg./sq.cm. (50psi). The waterdistribution pattern as shown in the graph in followingpages giving maximum effective axial distance fromthe nozzle. The spray pattern shown is with indoorapplication. The system designer must consider windvelocity while designing the system for out door appli-cation. Field obstruction if any affecting the spray pat-tern of the nozzle must be considered. The nozzle maybe oriented in any position which is deemed necessaryto cover the hazard.
19
Shield - High Velocity Water Spray Nozzle
Fire Fighting & Building Service Products
Shie
ld/2
005
Shi
eld
rese
rves
the
right
to c
hang
e th
e co
nten
ts w
ithou
t not
ice.
20
Shield - High Velocity Water Spray Nozzle
Fire Fighting & Building Service Products
Shie
ld/2
005
Shi
eld
rese
rves
the
right
to c
hang
e th
e co
nten
ts w
ithou
t not
ice.
21
Shield - High velocity Water Spray Nozzle
Fire Fighting & Building Service Products
Shie
ld/2
005
Shi
eld
rese
rves
the
right
to c
hang
e th
e co
nten
ts w
ithou
t not
ice.
The equipment presented in this bulletin is to be installed in accordance with the latest publication standards of NFPA,TAC or other similar organisations and also with the provision of government codes or ordinances wherever applica-ble.
The information provided by us are to the best of our knowledge and belief, and are general guidelines only. Site han-dling and installation control is beyond our reach. Hence we give no guarantee for result and take no liability for dam-ages, loss or penalties whatsoever, resulting from our suggestion, information, recommendation or damages due to ourproduct.
Product development is a continuous programme and hence the right to modify any specification without priornotice is reserved with the company.
Recommended
