Febco 825YD Series - User Manual

INSTALLATION, OPERATION, MAINTENANCE
IOM-F-825_826
Operation and Maintenance Manual
Reduced Pressure Backflow Prevention Assemblies
Models 825Y, 825YA, 825, 825D, 825YD & 826YD
Read and understand this manual prior to installing,
operating or servicing this equipment.
TABLE OF CONTENTS
Features and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Freeze Protection Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Vandalism Protection Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Troubleshooting Procedures and Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7, 8
Field Testing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9, 10
Service Procedures Model 825Y (
3
/ 4 –2") . . . . . . . . . . . . . . . . . . . . . . . 11, 12, 13
Parts Lists and Part Numbers Model 825Y (
3
/ 4 –2") . . . . . . . . . . . . . . . . . . 14, 15
Exploded View of Model 825Y (
3
/ 4 –2") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Service Procedures Models 825, 825D and 825YD (2
1
/ 2 –3") . . . . . . . . . . 16, 17
Service Procedures Models 825, 825D and 825YD (4–10") . . . . . . . . . . . 18, 19
Parts Lists and Part Numbers Model 825 (2
1
/ 2 –10”) . . . . . . . . . . . . . . . . . 20, 21
Exploded View of Model 825 (2
1
/ 2 –10") . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Parts Lists and Part Numbers Models 825D and 825YD . . . . . . . . . . . . . . . . 22
Exploded View Models 825D and 825YD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Parts List and Exploded View of Model 825D and 825YD Check Assembly 24
Parts List and Exploded View of Model 825 and 825D Relief Valve . . . . . . . 25
Parts List and Exploded View of Model 825YD Relief Valve . . . . . . . . . . . . . 26
Parts List and Exploded View of Model 826YD Relief Valve and Bypass . . . 27
Service Procedure Relief Valve Models 825, 825D and 825YD (2
1
/ 2 –10") 28, 29
Spring Removal Tool Instructions Model 825 (2
1
/ 2 –10") . . . . . . . . . . . . . . . . . 30
Commercially Available Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . 31, 32, 33
How To Order Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Series 825Y
Series 825YA
Series 826YD

Febco 825YD Series Specifications

General

Series	825YD
Category	Water System
Type	Double Check Valve Assembly
Material	Bronze
Max Pressure	150 psi
Hydrostatic Test Pressure	300 psi
Maximum Working Temperature	140°F
Body Material	Bronze
Cover Material	Bronze
Check Valve Material	Bronze
Spring Material	Stainless Steel
Temperature Range	33°F to 140°F
Certification	AWWA
End Connections	Flanged