Dixon BAYCO 5204SFI, Инструкции по эксплуатации и обслуживанию, Страница: 4 / 10

5204SFI API Valves
4 090112 REV 3 5204SFI
These instructions and recommendations are provided to ensure
proper operation and long service life of Dixon Bayco 5204SFI API.
Parts are identified by the item number on the assembly drawing and
part list.
Maintenance and Part Replacement
Semi-Annual Inspection
Visual inspection of the valve operation can be done while the valve
is still attached to the tank. All safety precautions that apply to the
use of the valve must be followed and all the lines must be empty.
1. Visually examine 5204SFI API for worn or damaged parts, or any
other condition that may affect the operation of the valve.
2. Visually examine nose ring (21) for cavities, scratches, or other
deformation of the sealing surface.
3. Visually examine shaft (2) for significant dirt accumulation that
could cause shaft seal leakage.
4. Check that the handle (22) automatically positions at an angle to
the valve body (1) with detent end away from the stop pin (5).
5. Visually examine stop pin (5) for signs of wear and deformation.
When the handle is moved to open position, it should remain firmly
latched on the stop pin (5). If the handle cannot stay securely in the
latched open position due to stop pin (5) wear, stop pin (5) should be
replaced. Locking pliers can be used to unscrew the stop pin (5).
6. Visually examine the sight glass (20) for damage or sign of
leakage, check the sight glass for cracks. If the sight glass is cloudy,
the color of the sight glass changed, or visible cracks are seen, or
leakage can be found from the sight glass or the O-rings (19), replace
the sight glass. See the
“REPLACEMENT OF SIGHT GLASS”
section for how to replace the sight glass.
7. To check the handle performance, open and close the API valve a
few times. The handle should move unobstructed and smoothly.
8. When released from the latched (or open) position, the poppet (23)
should instantly close and center.