Install Instructions

GASTITE DIVISION, TITEFLEX CORPORATION / 1116 Vaughn Parkway / Portland, TN 37148
800.662.0208 / www.gastite.com / [e-mail]
17
SECTION 3: SYSTEM CONFIGURATION / JANUARY 2019
3.1.4 DETERMINING SYSTEM LAYOUT
A) SERIES SYSTEMS
A series layout (Fig 3-1) is the most common
arrangement utilized for rigid pipe systems for low
pressure. ese usually consist of a main run (header)
with tees branching off to each appliance. In a
traditional series system, the service pressure down
stream of the meter is typically less than 1/2 PSI.
B) PARALLEL SYSTEMS
In a parallel system (Fig. 3-2) a main run from the
meter supplies a central distribution manifold. e
appliances are serviced by individual runs from the
manifold. e manifold station is best located close
to the greatest load, typically the boiler or furnace.
C) DUAL PRESSURE SYSTEM
A dual pressure system (Fig. 3-3, 3-4) incorporates
two operating pressures downstream from the meter.
e first pressure, set by the service regulator at the
meter, is usually 2 PSI but can be higher or lower
depending on code restrictions and gas company
policy. is part of the system is sized separately and
ends at the pounds-to-inches regulator inlet. Tables
4-7, 4-8 and 4-9 show maximum loads vs. inlet
pressures to the regulator.
e second pressure, at the outlet of the pounds-to-
inches regulator, is under 1/2 PSI; usually 8"WC
for natural gas and 11"WC for propane regulators
supplied by Gastite®. Generally, a parallel system
requires a higher total footage of smaller diameter
tubing and fewer fittings compared to a series layout.
Fig. 3-1
Fig. 3-2
Fig. 3-3
Fig. 3-4