HVAC Hydronics & Backflow - 5-79
WATTS
REDUCED PRESSURE ZONE BACKFLOW PREVENTERS
Series 909, LF909 3/4 " - 2 "
*
To prevent shaft damage assemble as shown:
If cover will not press against body, assembly is
crooked and tightening bolts will bend shaft. Do not
force the cover into place as damage may result
from misalignment.
Figure 1:
To assemble the relief assembly have a
screwdriver ready.
Figure 2:
Figure 3:
Depress the relief valve assembly, carefully
guiding it against the two pound spring load.
When properly aligned, the position is in the
cylinder bore. Insert the screwdriver as
shown.
Relief valve kits:
Sizes 3/4 " , 1 "
Piston
Disc assembly
Piston
o-ring
Relief valve
assembly
The relief valve assemblies held encapsulated
by the screwdriver. You should now have both
hands free to bolt down the cover. Insert and
snug two bolts 180˚ apart to hold the cover.
Finish inserting the remaining bolts and snug
up evenly alternating until secure. Remove
the screwdriver.
RV o-ring
Cat. #
EDP #
Relief Valve Kits:
24934
Kit #
* 0794059 RK 909 VT
24935* 0794060 RD 909 VT
Cover
Diaphragm
Sizes 11/4 " , 2 "
Cover
Stem
Seat
Seat
o-ring
(2) Piston
o-ring
Body
Relief valve
assembly
Seat
Rubber Parts for Relief Valve:
24936
* 0887131 RK 909 RV
24937* 0887141 RK 909 RV
3/4 " - 1 "
11/4 " - 2 "
Kit consist of: diaphragm, disc assembly, seat o-ring, RV o-ring, 2 piston
o-rings and lubricant.
Seat Kits for Relief Valve:
24938
* 0887372 RK 909 SV
24939* 0887371 RK 909 SV
3/4 " - 1 "
11/4 " - 2 "
Kit consist of: seat, seat o-rings and lubricant.
Size
3/4 " - 1 "
11/4 " - 2 "
Kit consist of: relief valve assembly, seat, seat o-ring, 2 piston o-rings and
lubricant.
Stem
Piston
Diaphragm
Seat
o-ring
(2) RV o-ring
Disc assembly
REVISION 12/10/14
5-79
https://www.markspp.com/Catalog/Detail/23036
https://www.markspp.com/Catalog/Detail/23037
https://www.markspp.com/Catalog/Detail/23038
https://www.markspp.com/Catalog/Detail/23039
https://www.markspp.com/Catalog/Detail/23040
https://www.markspp.com/Catalog/Detail/23041
HVAC Hydronics & Backflow
Table of Contents for the Digital Edition of HVAC Hydronics & Backflow
HVAC Hydronics & Backflow - Section5-cover
HVAC Hydronics & Backflow - Cover 2
HVAC Hydronics & Backflow - Section5
HVAC Hydronics & Backflow - Section5a
HVAC Hydronics & Backflow - 5-l
HVAC Hydronics & Backflow - 5-ll
HVAC Hydronics & Backflow - 5-1
HVAC Hydronics & Backflow - 5-2
HVAC Hydronics & Backflow - 5-3
HVAC Hydronics & Backflow - 5-4
HVAC Hydronics & Backflow - 5-5
HVAC Hydronics & Backflow - 5-6
HVAC Hydronics & Backflow - 5-7
HVAC Hydronics & Backflow - 5-8
HVAC Hydronics & Backflow - 5-9
HVAC Hydronics & Backflow - 5-10
HVAC Hydronics & Backflow - 5-11
HVAC Hydronics & Backflow - 5-12
HVAC Hydronics & Backflow - 5-12A
HVAC Hydronics & Backflow - 5-12B
HVAC Hydronics & Backflow - 5-12C
HVAC Hydronics & Backflow - 5-12D
HVAC Hydronics & Backflow - 5-13
HVAC Hydronics & Backflow - 5-14
HVAC Hydronics & Backflow - 5-15
HVAC Hydronics & Backflow - 5-16
HVAC Hydronics & Backflow - 5-17
HVAC Hydronics & Backflow - 5-18
HVAC Hydronics & Backflow - 5-19
HVAC Hydronics & Backflow - 5-20
HVAC Hydronics & Backflow - 5-21
HVAC Hydronics & Backflow - 5-22
HVAC Hydronics & Backflow - 5-22A
HVAC Hydronics & Backflow - 5-22B
HVAC Hydronics & Backflow - 5-23
HVAC Hydronics & Backflow - 5-24
HVAC Hydronics & Backflow - 5-24A
HVAC Hydronics & Backflow - 5-24B
HVAC Hydronics & Backflow - 5-25
HVAC Hydronics & Backflow - 5-26
HVAC Hydronics & Backflow - 5-26A
HVAC Hydronics & Backflow - 5-26B
HVAC Hydronics & Backflow - 5-27
HVAC Hydronics & Backflow - 5-28
HVAC Hydronics & Backflow - 5-29
HVAC Hydronics & Backflow - 5-30
HVAC Hydronics & Backflow - 5-31
HVAC Hydronics & Backflow - 5-32
HVAC Hydronics & Backflow - 5-33
HVAC Hydronics & Backflow - 5-34
HVAC Hydronics & Backflow - 5-34A
HVAC Hydronics & Backflow - 5-34B
HVAC Hydronics & Backflow - 5-34C
HVAC Hydronics & Backflow - 5-34D
HVAC Hydronics & Backflow - 5-34E
HVAC Hydronics & Backflow - 5-34F
HVAC Hydronics & Backflow - 5-35
HVAC Hydronics & Backflow - 5-36
HVAC Hydronics & Backflow - 5-37
HVAC Hydronics & Backflow - 5-38
HVAC Hydronics & Backflow - 5-39
HVAC Hydronics & Backflow - 5-40
HVAC Hydronics & Backflow - 5-41
HVAC Hydronics & Backflow - 5-42
HVAC Hydronics & Backflow - 5-43
HVAC Hydronics & Backflow - 5-44
HVAC Hydronics & Backflow - 5-45
HVAC Hydronics & Backflow - 5-46
HVAC Hydronics & Backflow - 5-47
HVAC Hydronics & Backflow - 5-48
HVAC Hydronics & Backflow - 5-49
HVAC Hydronics & Backflow - 5-50
HVAC Hydronics & Backflow - 5-51
HVAC Hydronics & Backflow - 5-52
HVAC Hydronics & Backflow - 5-53
HVAC Hydronics & Backflow - 5-54
HVAC Hydronics & Backflow - 5-55
HVAC Hydronics & Backflow - 5-56
HVAC Hydronics & Backflow - 5-57
HVAC Hydronics & Backflow - 5-58
HVAC Hydronics & Backflow - 5-59
HVAC Hydronics & Backflow - 5-60
HVAC Hydronics & Backflow - 5-61
HVAC Hydronics & Backflow - 5-62
HVAC Hydronics & Backflow - 5-63
HVAC Hydronics & Backflow - 5-64
HVAC Hydronics & Backflow - 5-65
HVAC Hydronics & Backflow - 5-66
HVAC Hydronics & Backflow - 5-66A
HVAC Hydronics & Backflow - 5-66B
HVAC Hydronics & Backflow - 5-66C
HVAC Hydronics & Backflow - 5-66D
HVAC Hydronics & Backflow - 5-66E
HVAC Hydronics & Backflow - 5-66F
HVAC Hydronics & Backflow - 5-66G
HVAC Hydronics & Backflow - 5-67
HVAC Hydronics & Backflow - 5-68
HVAC Hydronics & Backflow - 5-69
HVAC Hydronics & Backflow - 5-70
HVAC Hydronics & Backflow - 5-71
HVAC Hydronics & Backflow - 5-72
HVAC Hydronics & Backflow - 5-73
HVAC Hydronics & Backflow - 5-74
HVAC Hydronics & Backflow - 5-75
HVAC Hydronics & Backflow - 5-76
HVAC Hydronics & Backflow - 5-77
HVAC Hydronics & Backflow - 5-78
HVAC Hydronics & Backflow - 5-79
HVAC Hydronics & Backflow - 5-80
HVAC Hydronics & Backflow - 5-81
HVAC Hydronics & Backflow - 5-82
HVAC Hydronics & Backflow - 5-83
HVAC Hydronics & Backflow - 5-84
HVAC Hydronics & Backflow - 5-85
HVAC Hydronics & Backflow - 5-86
HVAC Hydronics & Backflow - 5-87
HVAC Hydronics & Backflow - 5-88
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section1
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section2
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section3
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section4
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section5
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section6
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section7
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section8
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section9
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section10
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section11
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section12
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section13
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section14
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section15
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section16
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section17
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section18
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section19
https://www.nxtbook.com/nxtbooks/marksplumbing/edition_h_section20
https://www.nxtbookmedia.com