MAR 2018 GFV-305 (Formerly H-3) Page 3 of 11
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Valve
Size
Nominal Installation Dimensions Inches (mm)
A
END TO END
B C D E F G H J K L M N P
4"
(DN100)
17.6
(447.7)
11
(279)
13.25
(336.5)
12
(304)
9.0
(228.6)
11.0
(279.4)
12.0
(304.8)
5
(127)
16
(406)
7.125
(181)
8
(203)
8.625
(219)
11.0
(279.4)
12
(304)
6"
(DN150)
19.75
(501.6)
10
(254)
14.5
(368.3)
13
(330)
9.0
(228.6)
12
(304)
13
(330)
4.4
(111)
16
(406)
8.5
(216)
8
(203)
9.75
(247.6)
11.0
(279.4)
13
(330)
FIGURE 3:DRY ACTUATION TRIM DIMENSIONS
uid delivery times with higher air pressure. This is
meant to be general guidance, and should be in no
way taken as a guarantee of uid delivery time. All
systems and congurations are different and there are
always exceptions to the rule.
GDPA-LP
The Model GDPA-LP is only recommended for system
supply pressures up to 250 psi (17.2 Bar). The GDPA-
LP is factory painted green to identify the low pressure
version. The Model GDPA is the standard pressure ac-
tuator, while the GDPA-LP can be utilized for low sys-
tem air pressures. The types of systems where the
use of the GDPA-LP has the potential to be benecial
to system performance are: Dry Systems, and Double
Interlock Electric/Pneumatic Systems. There is little to
no advantage to utilizing the GDPA-LP in Single Inter-
lock Dry Pilot, or Deluge Dry Pilot Systems, as the pilot
lines generally have a very small volume and the valve
trips very quickly no matter the pilot line pressure.
If you have any questions on the application of the
GDPA vs the GDPA-LP contact Globe Sprinkler Tech-
nical Services.
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