9
Note: Before actioning any maintenance programme observe the 'Safety
information' in Section 1.
Referring to these Installation and Maintenance Instructions, name-plate and
Technical Information Sheet, check that the product is suitable for the intended
installation.
3.1 Supply
DP17, DP17G and DP27G (Fig. 1)
These are supplied ready for fitting and have a variable rate conical pressure spring suitable
for a downstream pressure of 0.2 - 17 bar (3 - 247 psi).
DP17Y (Fig. 1)
The DP17Y is supplied as the DP17, but has a lower rate pressure adjustment spring for a
downstream pressure range of 0.2 - 3 bar (3 - 44 psi).
Pressure adjustment spring
Internal pressure control
pipe assembly
Pressure setting adjustment screw
Lock-nut
Alternative recommended
downstream pressure control
pipe connection (refer to
Section 3.8, page 14)
Fig. 1 DP17, DP17G and DP17Y
3. Installation
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