Emerson Digital Controller Valves 788 DVC Manuale delle Istruzioni Scaricare il pdf (Pagina 37)

DANIEL MODEL 788DVC DIGITAL CONTROL VALVES DEC 2012

DISASSEMBLY AND REASSEMBLY 5-7

5.4.2 To upgrade existing valves having the original “AP” option (received prior to September

1992), the following parts have been supplied as a separate kit:

- washers (29)

- Stat-O-Seals (30)

- one gasket (31)

- three O-rings (replaces existing O-rings (3) and (4) of the same part numbers.)

Reference Figure 7-1 for complete valve part numbers.

5.4.3 To upgrade existing “AP” units supplied prior to September, 1992:

a. Follow procedures described in Section 5-1 for general disassembly and Section 5-2

for Aggressive Products Cylinder disassembly.

b. Replace O-rings and install gasket, Stat-O-Seal and washers as required (reference

Figure 7-1).

c. Complete cylinder assembly by installing piston and all component parts through the

top of the cylinder housing.

Do not attempt to install the piston through the seat area. Attempts to assemble through the

seat area will destroy the spring-loaded Teflon cup-seals.

d. Secure cylinder assembly to cylinder heads using hand pressure or arbor press for

ease of installation.

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Emerson Digital Controller Valves 788 DVC Manuale delle Istruzioni Pagina 37