User Guide
33
MAINTENANCE MANUAL MODELS 825Y, 825YA, 825, 825D, 825YD & 826YD
MAINTENANCE MANUAL MODELS 825Y, 825YA, 825, 825D, 825YD & 826YD
Commercial Parts for Main Valve - Model 825D & 825YD (2
1
/2–10")
  Item DESC. Material SIZE  SIZE SIZE  SIZE SIZE SIZE 
 No.      2
1
/2" 3" 4" 6" 8" 10" 
 2D  Screw  ST STL 
1
⁄4-20 x 
1
⁄2 
1
⁄4-20 x 
1
⁄2 
5
⁄16-18 x 
3
⁄4 
5
⁄16-18 x 
3
⁄4 
5
⁄16-18 x 
3
⁄4 
5
⁄16-18 x 
3
⁄4
      (6)  (6)  (6)  (6)  (6)  (6) 
 7A  Screw  ST STL     
3
⁄8-16 x 1 
3
⁄8-16 x 1 
3
⁄8-16 x 1 
3
⁄8-16 x 1
          (2)  (2)  (2)  (2)
 12  O-ring  BUNA-N  568-237  568-242  568-253  568-263  568-272  568-274
      3
3
⁄8 x 3
5
⁄8 x 
1
⁄8  4 x 4
1
⁄4 x 
1
⁄8 5
3
⁄8 x 5
5
⁄8 x 
1
⁄8 7
1
⁄4 x 7
1
⁄2 x 
1
⁄8 9
1
⁄2 x 9
3
⁄4 x 
1
⁄8 10 10
1
⁄4 x 
1
⁄8
      (2)  (2)  (2)  (2)  (2)  (2)
 13  Cap-  ST STL 
7
⁄16-14 x 1 
7
⁄16-14 x 1 
1
⁄2-13 x 1
1
⁄4 
5
⁄8-11 x 1
1
⁄2 
3
⁄4-10 x 1
1
⁄2 
3
⁄4-10 x 1
3
⁄4
  Screw    (16)  (16)  (16)  (16)  (16)  (16) 
 14  O-ring  BUNA-N  568-346  568-354  568-365  568-374  568-379  568-381
      4
1
⁄8 x 4
1
⁄2 x 
3
⁄16 5
1
⁄8 x 5
1
⁄2 x 
3
⁄16  7 x 7
3
⁄8 x 
3
⁄16 9
1
⁄4 x 9
5
⁄8 x 
3
⁄16  11 x 11
3
⁄8 x 
3
⁄16  12 x 12
3
⁄8 x 
3
⁄16
      (2)  (2)  (2)  (2)  (2)  (2)
 15  Lock-Nut  ST STL 
1
⁄2-20 
1
⁄2-20 
3
⁄4-16 
3
⁄4-16 
7
⁄8-14 
7
⁄8-14
      (15)  (15)  (15)  (15)  (15)  (15)
 17  Bolt &  STEEL 
5
⁄8-11 x 2
1
⁄4 
5
⁄8-11 x 2
1
⁄2 
5
⁄8-11 x 2
3
⁄4 
3
⁄4-10 x 3 
3
⁄4-10 x 3
1
⁄4 
7
⁄8-9 x 3
1
⁄2
  Nut    (12)  (12)  (24)  (24)  (24)  (36)
 40  Test  BRASS 
1
⁄2" IPS 
1
⁄2" IPS 
1
⁄2" IPS 
3
⁄4" IPS 
3
⁄4" IPS 
3
⁄4" IPS
  Cocks    (4)  (4)  (4)  (4)  (4)  (4)
 41  Nipple    571-181-44  571-181-44  571-181-44  571-181-55  571-181-55 781-181-55
        Size (3)  Size (3)  Size (3)  Size (3)  Size (3)  Size (3)
 41A  Nipple    571-181-43  781-181-43  781-181-43  571-181-53  781-181-53  781-181-53
        Size (2)  Size (2)  Size (2)  Size (2)  Size (2)  Size (2)
 41B  Tee    571-131-42  781-131-42  781-131-42  571-131-52  781-131-52  781-131-52
      Size  Size  Size  Size  Size  Size
 43  Tube Fit.    571-231-23  571-231-23  571-231-23  571-231-23  571-231-23 571-231-23
  90º    Size  Size  Size  Size  Size  Size
 43A  Tube Fit.    571-211-23  571-211-23  571-211-23  571-211-23  571-211-23  571-211-23
      Size  Size  Size  Size  Size  Size
 51  O-ring  BUNA-N  568-014  568-014  568-116  568-116  568-118  568-118
1
⁄2 x 
5
⁄8 x 
1
⁄16 
1
⁄2 x 
5
⁄8 x 
1
⁄16 
5
⁄8 x 
3
⁄4 x 
1
⁄16 
5
⁄8 x 
3
⁄4 x 
1
⁄16 
3
⁄4 x 
7
⁄8 x 
1
⁄16 
3
⁄4 x 
7
⁄8 x 
1
⁄16
      (2)  (2)  (2)  (2)  (2)  (2)
These parts are commercially available through most hardware distributors or retailers. Gate valves, testcocks, flange gaskets, etc., are also commercially 
available, but not listed.
*  Denotes parts only used on valves manufactured prior to 1981.










