User Guide

3
MAINTENANCE MANUAL MODELS 805YD, 806YD 2
1
/2"- 10" (65 – 250mm)
How to Order Repair Kits
1. Locate item number and kit number in this maintenance manual.
2. Verify the size of the valve the parts are to be used for.
3. Provide full model number located on I.D. plate.
4. Record kit number.
5. A serial number (located on the I.D. plate) will assist in ordering the proper kits.
6. Contact your local FEBCO Parts Distributor.
Repair Kits
805YD, 806YD Assemblies / Kits
SYMPTOM #1 Cause: Solution:
Check fails to hold 1.0 PSID min. A. Debris on sealing surfaces Disassemble and clean
B. Leaking shutoff valve Disassemble and clean or repair
C. Damaged seat disc or seat ring Disassemble and replace
D. Damaged guide holding check open Disassemble and replace guide pin
and/or sleeve bushing
E. Weak or broken spring Disassemble and replace spring
Symptom #2 Cause: Solution:
Chatter during flow conditions. A. Worn or damaged guide Disassemble & repair or replace guide
Symptom #3 Cause: Solution:
Low flows passing through the
mainline valve (806YD only). A. Mainline check fouled Disassemble and clean
B. Meter strainer plugged Disassemble and clean
C. Damaged mainline seat disc or seat Disassemble and replace
D. Broken mainline spring Disassemble and replace
Troubleshooting Guide
Testing
All mechanical devices should be inspected on a regular basis to ensure
they are working correctly. The assembly should be tested at time of ini-
tial installation, after servicing or maintenance, and at least annually there-
after. Acceptable test procedures are published by Foundation for Cross-
Connection Control and Hydraulic Research at the University of Southern
California (USC), The American Water Works Association (AWWA), The
American Society of Sanitary Engineering (ASSE Series 5000) and the
Canadian Standards Association (CAN/CSA B64.10). Please consult the
regulatory authority in your area for more specific information.
DESCRIPTION 2
1
⁄2"3"4"6"8"10"
Model 805YD Spring Assembly
(Items: 3. 4.1, 5, 6, 7, 7.1, 7.2, 9, 11, 15, 50)
905-086 905-088 902-467 902-469 902-471 902-473
Model 805YD, 806YD Rubber Parts
(Items: 11, 14, 50)
905-059 905-060 905-061 905-062 905-063 905-064
Model 805YD, 806YD Seat Kit
(Items: 2, 2.1, 2.2, 12)
902-386YD 902-385YD 902-384YD 902-383YD 902-382YD 902-381YD
Model 805YD, 806YD Lg. Mounting Kit
(Items: 16, 17, 17.1; Both Ends)
905-036 905-037 905-038 905-039 905-040 905-041
Model 805YD, 806YD Cover Assembly
(Items: 4, 4.1, 14, Aircock (not shown)
902-497 902-498 902-499 902-500 902-501 902-502
Model 806YD Spring Assembly
(Items: 3, 4.1, 5, 6, 7, 7.1, 7.2, 9, 11, 15, 50)
– – 902-514 902-515 902-516 902-517
Model 806YD By-Pass Kit (without meter)
(Items: 301 through 313)
– 905-138 905-138 905-138 905-138
905-138