Types 749B and R130
5
this is by cracking the container valve open for a short
time to blow out the dirt. Apply pipe compound to the
male threads of the pipe.
A relief valve is required downstream of all the
regulators (except Types 64SR or HSRL) used on
final-stage service. Both the Types 64SR and HSRL
final-stage regulators have an internal relief valve. The
internal relief valve opens when downstream pressure
reaches approximately 125% to 250% above the set
point for the Type 64SR or 200% to 300% above the
setpoint for the Type HSRL.
!
WARNING
Be sure that the changeover manifold
regulator assembly is supplying the
correct pressure to the appliance.
Failure to provide the correct pressure
to the appliance can result in personal
injury from fire and or explosion or
damage downstream equipment.
Figure 3.
Assembly Drawing
5
3
1
8
5
4
A
A
VIEW A-A
SUPPLY
T80219
749B Series (Type 64 Manifold Regulators)
CHANGEOVER REGULATOR SPRING
RESERVE OUTLET PRESSURE STANDARD
SETTING AND RANGE
APPROXIMATE SUPPLY
PRESSURE ABOVE RESERVE SETTING
Zinc
1D7515
6 psi / 0.41 bar
Adjustable Range
3 to 11 psi / 0.21 to 0.76 bar
9 psi / 0.62 bar
Blue
1D6659
5 psi / 0.35 bar
Adjustable Range
5 to 15 psi / 0.35 to 1.0 bar
20 psi / 1.4 bar
R130 Series (Type 67C Manifold Regulators)
Blue
T14058
30 psi / 2.1 bar
Adjustable Range
5 to 40 psi / 0.35 to 2.8 bar
14 psi / 0.97 bar
Table 1.
Manifold Spring Rates