User Manual

2
How to order
Locate the manufacturer and model number under the valve size column in the matrix on these two pages. It is assumed that the
valve you will be installing is a Watts 774 Sentry Series. On the first line across from the model number is the lay length of the valve
less gates. On the lines listed below is the valve being replaced. On that line is the lay length of that valve. The column to the right
is the length of the spool needed to “make up” the difference between the valve being replaced and the lay length of the “Sentry
Series.” Below the spool length is the ordering code for that spool.
Retrofit Spool Pieces for Various Lengths • Cast Iron Watts Products vs Watts Sentry Series
WATTS ACTUAL SPOOL ACTUAL SPOOL ACTUAL SPOOL ACTUAL SPOOL ACTUAL SPOOL ACTUAL SPOOL
MODEL 2
1
⁄2"† LENGTH NEEDED 3"† LENGTH NEEDED 4"† LENGTH NEEDED 6"† LENGTH NEEDED 8"† LENGTH NEEDED 10"† LENGTH NEEDED
774 22" - 22" - 22" - 27
1
⁄2" - 29
1
⁄2" - 29
1
⁄2" -
709/LF709 24" 1
7
⁄8" 24" 1
7
⁄8" 34" 11
7
⁄8" 42
1
⁄2" 14
7
⁄8" 52" 22
3
⁄8" 64" 34
3
⁄8"
774DCDA 22" - 22" - 22" - 27
1
⁄2" - 29
1
⁄2" - 29
1
⁄2" -
709DCDA - - 24" 1
7
⁄8" 34" 11
7
⁄8" 41
1
⁄2" 13
7
⁄8" 52" 22
3
⁄8" 64" 34
3
⁄8"
994 22" - 22" - 22" - 27
1
⁄2" - 29
1
⁄2" - 29
1
⁄2" -
909/LF909 26
1
⁄8" 4" 26
1
⁄8" 4" 37" 14
7
⁄8" 44
1
⁄2" 16
7
⁄8" 55
1
⁄4" 25
5
⁄8" 67
3
⁄8" 37
3
⁄4"
994RPDA 22" - 22" - 22" - 27
1
⁄2" - - - - -
909RPDA 26
1
⁄8" 4" 26
1
⁄8" 4" 37" 14
7
⁄8" 44
1
⁄2" 16
7
⁄8" 55
1
⁄4" - 67
3
⁄8" -
†Size and length of valve being replaced.
For Example: when replacing a Watts 4" 709 with a Watts 4" 774 you would need a spool that is 11
7
⁄8" long.
The slight decrease in the spools length is to accommodate the flange gasket, approximately
1
⁄8".
Spool Length from chart: 11
7
⁄8" Subtract Lengths: 12" Ordering code: 0107020
Example:
WATTS MODEL: 709 WATTS MODEL: 774
Line Size Lay Length: Line Size Lay Length:
4" 34" 4" 22"