Dover WILDEN A1 Series, Инженерия, эксплуатация и обслуживание, Страница: 18 / 28

WILDEN PUMP & ENGINEERING, LLC
16
WIL-10040-E-02
Step 1. Figure 1
Gently remove the adhesive covering from
the back of the Teflon
® tape. Ensure that
the adhesive strip remains attached to the
Teflon
® tape.
Step 2. Figure 2
Starting at any point, place the Teflon ®
tape in the center of the diaphragm bead
and press lightly on the tape to ensure
that the adhesive holds it in place during
assembly. Do not stretch the tape during
placement.
Step 3. Figure 3
The ends of the tape should overlap
approximately 12.7 mm (
1 ⁄
2
”) (Figure 3) .
Proceed to install the Teflon ® tape on the
remaining diaphragm.
A1 PVDF pumps come standard with expanded Teflon ® Gasket
Kits (P/N 01-9501-99) for all sealing surfaces. A1 Poly pumps
come standard with expanded Teflon
® Gasket Kits (P/N 01-9500-
99) for diaphragm bead only. Carefully prepare sealing surfaces
by removing all debris and foreign matter from diaphragm bead
and all mating surfaces. If necessary, smooth or deburr all seal-
ing surfaces. Mating surfaces must be properly aligned in order
to ensure positive sealing characteristics.
SECTION 8C
GASKET KIT INSTALLATION
Step 4. Figure 4
Carefully remove the protective covering from the back of the
Teflon
® gasket attached to tape. (Figure 4)
Step 5. Figure 5
Install the valve ball, valve seat and O-ring. (Figure 5)
Step 6. Figure 6
Center the gasket so that it evenly covers the O-ring and seat
areas.
(Figure 6)
Step 7. Figure 7
Gently apply pressure to gasket to ensure the adhesive main-
tains a positive seal to stay in place during pump assembly.
(Figure 7)