User Guide

7
MAINTENANCE MANUAL SERIES 850, 856, 870V & 876V 2
1
⁄2"- 10" (65 – 250mm)
Repair Parts 850 / 856
2
1
⁄2" – 10" (65 – 250mm) Double Check / Double Check Detector Assemblies
ITEM DESCRIPTION STYLE SIZE 2
1
⁄2" & 3" (65 – 80mm) 4" (100mm) 6" (150mm) 8" & 10" (200 – 250)
DISC ASSEMBLY N-Shape Part # 905182 905153 905154 905155
Items 6, 16, 17 Only
SINGLE SPRING MODULE 850 Part # 905142 905143 905144 905145
Items 5.1, 7, 8, 9, 9.1,
10, 11, 12, 12.1 856 Part # 905147 905148 905149 905150
CHECK REPLACEMENT KIT 850 Part # 905527 905534 905537 905539
Items 2.1, and 3 - 17
856 Part # 905529 905536 905538 905541
SEAT RING / ARM ASSEMBLY ALL Part # 905157 905158 905159 905160
Items 3, 3.1, 3.2, 3.4, 4, 4.1, 4.2, 5
RUBBER PARTS KIT ALL Part # 905249 905163 905164 905165
Items 2.1, 3.1, 6, 15, 26,
35, 35.1, 45, 45.1
COVER ASSEMBLY With Bulkhead Part # 905167 905168 905169 905170
Items 2, 2.1, 15 Fitting
TAPPED Part # 905376 905377 905378 905379
BULKHEAD FITTING FOR COVER* 850 Part # 905275 905277
Items 43.1, 45.1, 46.1, 47.1
856 Part # 905275 905277
BULKHEAD FITTING FOR BODY* 850 Part # 905276 905277
Items 43, 45, 46, 47
856 Part # 905277
* Bulkhead fittings are not furnished on late models. Very early productions of Series 856 may require a different bulkhead fitting. Consult your FEBCO
representative for assistance.
Second Check
First Check
Test
Cock
#3
Test
Cock
#4
Test
Cock
#1
Test
Cock
#2
Test
Cock
#2
Test
Cock
#1
#1 Inlet Shutoff Valve
#2 Outlet Shutoff Valve