Technical
151
Dixon Fire 2014
US: 877.712.6179 Canada: 800.786.9697 • dixonvalve.com
Technical
P
Thread Information
$EEreviation
System Name
&
ompatiEility
Seal
0
ethod
BSPP
British Standard Pipe Parallel
0
ale BSPP with )emale BSPP
)
emale BSPP with 0ale BSPP
)
emale BSPP with 0ale BSPTr
:
asher
:
asher
:
asher
BSPTr
British Standard Pipe Taper
0
ale BSPTr with )emale BSPTr
0
ale BSPTr with )emale BSPP
)
emale BSPTr with 0ale BSPTr
Female BSPTr not compatible with Male
BSPP
Thread
:
asher
Thread
CHT
$merican Standard )ire Hose Thread
(1"
National Hose Thread is &hemical
Hose Thread also Nnown as Booster
Hose Thread)
1" 0
ale NH (NST) with 1" )emale NH (NST)
1")
emale NH (NST) with 1" 0ale NH (NST)
1"
Thread is used on Eoth ¾" hose and 1"
hose
Not compatible with other systems
:
asher
:
asher
GHT
Garden Hose Thread
0
ale GHT with )emale GHT
)
emale GHT with 0ale GHT
Thread is same for all size hose
Not compatible with other systems
:
asher
:
asher
IPS
,
ron Pipe Straight Thread
Generic Name for Straight Pipe Thread
See NPSH for compatiEility
:
asher
IPT
,
ron Pipe Thread
Generic Name for $ll Pipe Thread
More information required
NH
or
NST
$merican Standard )ire Hose &oupling
Thread
(
National Hose thread also Nnown as
National Standard Thread)
0
ale NH (NST) with )emale NH (NST)
)
emale NH (NST) with 0ale NH (NST)
Not compatible with other systems
Thread pitch and diameters of fire threads
may vary according to local and municipal
regulations
:
asher
:
asher
NPT
$merican Standard Taper Pipe Thread
(
National Pipe Tapered)
0
ale NPT with )emale NPT
0
ale NPT with )emale NPT)
0
ale NPT with )emale NPS0
0
ale NPT with )emale NPSH
)
emale NPT with 0ale NPT
)
emale NPT with 0ale NPT)
)
emale NPT not compatiEle with 0ale NPS0
or 0ale NPSH
Thread
Thread
:
asher
:
asher
Thread
Thread
NPTF
$merican Standard Taper Pipe )uel
'
ryseal Thread (National Pipe Tapered
)
ine)
0
ale NPT) with )emale NPT)
0
ale NPT) with )emale NPT
0
ale NPT) with )emale NPS0
0
ale NPT) with )emale NPSH
)
emale NPT) with 0ale NPT)
)
emale NPT) with 0ale NPT
Female NPTF with Male NPSM or NPSH
Note: NPTF with NPTF threads do not
require sealant for the initial use. After that,
sealant is required.
Thread
Thread
:
asher
:
asher
Thread
Thread
Not &ompatiEle
NPSH
$merican Standard Straight Pipe for
Hose &ouplings (National Pipe Straight
Hose)
0
ale NPSH with )emale NPSH
)
emale NPSH with 0ale NPSH
)
emale NPSH with 0ale NPT
)
emale NPSH with 0ale NPT)
)
emale NPSH with 0ale NPS0
:
asher
:
asher
:
asher
:
asher
:
asher
NPSM
$merican Standard Straight 0echanical
-
oints (National Pipe Straight
0
echanical)
0
ale NPS0 with )emale NPS0
0
ale NPS0 with )emale NPSH
)
emale NPS0 with 0ale NPS0
)
emale NPS0 with 0ale NPT
)
emale NPS0 with 0ale NPT)
Seal can Ee either
mechanical or washer
0
ating fittings must Ee
of same type
SIPT
Straight ,ron Pipe Thread
Generic name for Straight Pipe Thread
:
asher
TIPT
Tapered ,ron Pipe Thread
Generic name for Tapered Pipe Thread
Thread