Semi-Annual Inspection
Visually inspect and test the valve for proper operation. This inspection can be done
without removing the API from the trailer. Before the inspection, ensure that all lines are
empty. Follow all safety procedures. If any of the following parts need to be repaired or
replaced, refer to the Annual Inspection & Maintenance section.
Annual Inspection
1. Remove API from the trailer, and inspect it at the workbench
2. Keep the API in the closed position
3. Remove the six screws and lock washers from the nose. When the nose is removed the
poppet assembly will extend less than 1/4” (6.3mm)
4. Remove o-ring from the body
5. Remove the small e-clip and slide link off of the handle shaft
6. Disassemble poppet assembly. Remove the clevis pins located at the end of the poppet
assembly by depressing the spring loaded wedge. Slide link out of the poppet shaft.
Remove poppet assembly and spring
7. Inspect and replace poppet o-ring as needed. Do not damage the poppet o-ring groove
when removing the o-ring.
Do not twist the o-ring when installing
8. Inspect the sealing surface of the nose for wear as shown in Figure 3, page 2
9. Inspect the poppet shaft for scoring or contamination. Wipe off any contamination, if
shaft is scored a 600 grit or finer polishing cloth may be used
10. Inspect inside of the poppet bearing for wear or foreign material. Wipe off any
contamination and replace bearing if necessary
11. Remove large e-clip
12. Remove handle assembly from the body
13. Remove bowtie clip and pin to disengage handle
14. Inspect quad ring and washer for wear and contamination and replace if needed
15. Inspect surface of handle shaft and inside surface of the hub and bearing for wear.
Hub should move freely over the shaft. Wipe off any contamination, polish with 600
grit or finer polishing cloth or replace as needed
16. Inspect nylon washers, o-rings, spring, and fulcrum pin for repair and replace as needed
17. For adapters that have sight glassed remove the screws and washers and inspect the
sight glass for wear or cracks. Inspect the o-ring and float ball for wear or cracks and
replace as needed
External Sealing Surface
Figure 2
API Nose Surface
Visual Inspection
1. Inspect the nose external sealing surface for dents or
gouges which could interfere with interfacing equipment
or cause leaks. See Figure 2.
2. Inspect the backside of the nose (as shown in Figure
3) for excessive wear from the loading coupler. Its hard
coated surface should be free of gouges and grooves
which could cause leaks. If gouges and grooves exist, the
adapter end should be rotated or replaced. Inspect the
inside sealing surface (as shown in figure 3) for wear.
3. Inspect stop pin for excessive wear or damage. The
handle should remain in the open position when placed
on top of the stop pin. If the valve does not remain open
because the stop pin is worn, replace the pin. The gap
between the stop pin and handle should be at least 3/16”
(4.87mm) as shown in Figure 4.
Figure 4
API Handle Gap
3/16”
(4.87 mm)
minimum
Figure 3
Backside of Adaptor End
Inside
Sealing
Surface
Coupler
Surface
Physical Inspection
1. Use the handle to open and close the API several times.
The handle should move smoothly.
2. Open the API with the handle as if unloading. Release
the handle from the latched position allowing the poppet
to slam shut. The poppet should close and center itself.
3. Open the valve by pushing on the poppet with a soft
nonmetallic tool as far off center as possible and allow the
poppet to slowly close. Repeat several times, the poppet
should center and re-seat every time.
Installation Procedure
1. Remove nuts, bolts and washers from existing API Adapter
2. Remove API Adapter and gasket. Thoroughly clean mounting flange
3. Install new gasket (P/N 9095)
4. Position new API Adapter with notch in mounting flange oriented to the top position
5. Install nuts, bolts and washers
CAUTION:
OVERSIZED MOUNTING HARDWARE COULD CAUSE DAMAGE TO THIS VALVE DURING ASSEM-
BLY. MOUNTING HARDWARE TO BE NO LONGER THAN 1-1/2 IN (38mm) LONG. SEE MANUAL
FOR ADDITIONAL DETAILS.
CAUTION:
DO NOT WELD ON OR AROUND THIS EQUIPMENT WITHOUT PROPER ELECTRICAL GROUNDING.
FAILURE TO DO SO WILL RESULT IN DAMAGE TO THE API ADAPTER.
Available 891 Repair Kits
•
891LPRK
Poppet/Link Repair Kit
•
891ORK
O-Ring Repair Kit
•
891HRK
Handle Repair Kit
•
891SRK
Handle Shaft Repair Kit
•
12489
Handle Stop Pin
•
11550
API Nose
