Enerpac V-66F - Manual (Page 2)

2
WARNING: BE SURE SETUP IS STABLE BEFORE
LIFTING LOAD. Cylinders should be placed on a flat
surface that can support the load. Where applicable, use a
cylinder base for added stability. Do not weld or otherwise
modify the cylinder to attach a base or other support.
Avoid situations where loads are not directly centered on
the cylinder plunger. Off-center loads produce
considerable strain on cylinders and plungers. In addition,
the load may slip or fall, causing potentially dangerous results.
Distribute the load evenly across the entire saddle
surface. Always use a saddle to protect the plunger.
IMPORTANT: Hydraulic equipment must only be serviced
by a qualified hydraulic technician. For repair service,
contact the Authorized ENERPAC Service Center in your
area. To protect your warranty, use only ENERPAC oil.
WARNING: Immediately replace worn or damaged parts by
genuine ENERPAC parts. Standard grade parts will break
causing personal injury and property damage. ENERPAC
parts are designed to fit properly and withstand high loads.
3.0 DESCRIPTION
V-82, V182 and V8F Two-Way Manual Needle Valve
V-82 and V182
Designed to operate at 10,000 psi [700 bar]
from either port this valve can be used as a
shut-off valve or metering valve in hydraulic
circuits.
V-8F
The V-8F valve operates only as a metering valve and features
increased metering capability for control of cylinder speed during
load lowering.
CAUTION: V-8F valves are not designed for use a shut-
off valves.
V-66 and V-66NV Two-way Manual Flow Control
Check Valve
V-66 and V-66NV
When this valve is opened, flow is free in both
directions. When this valve is closed, flow is
checked from the cylinder. The cylinder port
is marked CYL. The V-66 and V-66NV valve
can also be used to hold a load in case
system pressure is lost.
V-66F
With careful monitoring of system operation, this valve can be
used as a flow control and metering valve for applications
requiring slow lowering of loads.
4.0 INSTALLATION
1. For most applications, including load holding, install the valve so
that the load pressure acts against the seat, not the valve stem
seals. This will increase safety and protect the life of the valve.
Install V-82, V-182, and V-8F valves so that the direction of
flow is the same as the direction of the arrow on the side of
the valve. Install V-66, V-66NV and V-66F valves so that the
fitting from the check ball port is plumbed directly into the
cylinder port.
2. Use correct fittings. V-82 and V-8F valves have 3/8“ NPT
male fittings. V-66, V-66NV and V66F valves have 3/8” NPT
male fitting attached. V-182 valves have 1/4“ NPT fittings.
3. Use 11/2 wraps of teflon tape (or similar thread sealant) on
fittings, leaving the first complete thread free of tape or
sealant to prevent sealant from entering the hydraulic system.
Tighten fittings securely.
CAUTION: Connections should be snug and leak-free.
Overtightening connections promotes thread failure and
may cause high pressure fittings to rupture at less than
rated capacity.
WARNING: Shut-off and safety valves should be close-
coupled to cylinders. NEVER allow pressurized hoses in
a load-holding circuit.
4. Tighten handle to close valve. Loosen handle to open valve.
NOTE: V-8F and V-66F valves have knurled knobs rather than
handles.
WARNING: Turn handle only as far as the stop.
Overtightening or subjecting the handle to excessive
force will weaken and strip internal spindle threads,
creating a safety hazard. Use only fingers to tighten knurled
knobs. NEVER use extension handles.
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