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Please read the warning and caution
statements on pg 2 prior to installation.
Installation & Maintenance
INSTALLATION
1. Remove the valve from carton or packing skid.
2. The protective rust proof coating on the internal parts of steel or cast iron valves should be re-
moved by brushing out with any standard petroleum solvent (Varsol, Kerosene), and air dry. Insure
internal parts operate freely.
3. Stainless Steel or Bronze valves need only to be wiped clean and installed.
4. In horizontal flow installation, the hinge pin must be vertical.
5. Insert the valve between two companion flanges of the same series as the valve and place gaskets
on flange faces. The arrow on the valve or name plate indicating direction of flow should coincide
with line flow. Install studs through companion flanges and tighten, using standard industry prac-
tice.
6. In liquid service we recommend valve be installed at least five (5) pipe diameters downstream
from a pump discharge and/or other pipe fittings for maximum service life. Consult factory.
MAINTENANCE
Make sure the valve is not under pressure before starting any maintenance.
Disassembly** (Refer to assembly drawing on next page.)
1. Lay valve down with the downstream side of the valve upward.
2. Remove stop pin retainers (6) and hinge pin retainers (7).
3. Remove stop pin (3), being careful with the short hooked spring legs on valves 6” and larger.
4. Remove hinge pin (4) out of the body (1) while holding spring(s) firmly as some are preloaded and
may snap out. Observe caution.
5. Remove springs (5), plates (2), and bearings (8), (9), and (10).
CAUTION
!
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