1128 Safety Relief Valve



Parts:

Select Key No. Cat. No. No. Per Unit 1128 No. Per Unit S1128 No. Per Unit S1128 Food Grade No. Per Unit HP1128 Description Quantity
6U170600 1 Valve Assy w/Nitrile O-Rings
6U170601 1 SS Valve Assy w/Nitrile O-Rings
5U170602 1 SS Valve Assy w/EPR Food Grade O-Rings
5W277900 1 HP Valve Assy w/Neoprene O-Rings
1 4U171000 1 1 Upper Housing - Steel
1 4U171001 1 1 Upper Housing - Stainless
2 4U170800 1 Lower Housing - Steel
2 4U170801 1 Lower Housing - Stainless
2 5U773900 1 Lower Housing - Stainless, Food Grade
2 5U773903 1 Lower Housing - Stainless, Food Grade
3 2U171800 1 1 1 Retainer - Stainless
3 2U171801 1 Retainer - Stainless, Food Grade
4 3U171900 1 1 Valve Cover - Steel
4 3U171901 1 1 Valve Cover - Stainless
5 50092878 1 1 1 Spring - Stainless
5 2W277400 1 Spring - Stainless
6 2U171400 1 1 1 1 Follower - Stainless
7 2U171500 1 1 1 1 Guide - Stainless
8 2U171600 1 1 1 1 Adjusting Screw - Stainless
9 90002629 1 1 1 1 Jam Nut - Stainless
10 3U171100 1 1 1 Stem - Stainless
10 3U171101 1 Stem - Stainless, Food Grade
11 3U171700 1 1 1 O-Ring Retainer - Stainless
11 3U171701 1 O-Ring Retainer - Stainless, Food Grade
12 2U171300 1 1 1 Plug - Stainless
12 2U171301 1 Plug - Stainless, Food Grade
13 50092874 2 2 2 2 Bolt-Seal - Stainless (Type 304)
14 50092877 3 3 3 3 Bolt-Seal - Stainless (Type 304)
15 90004303 3 3 3 3 Lock Washer
16 50093301 2 2 2 2 Lead Seal
17 50092846 2.5 FT 2.5 FT 2.5 FT 2.5 FT Wire Seal
18 91000001 1 1 1 1 Tag
19 90038699 1 1 1 1 O-Ring - Nitrile
19 91000014 1 1 1 1 O-Ring - EPR Food Grade
19 91001384 1 1 1 1 O-Ring - Viton A
19 90038769 1 1 1 1 O-Ring - Neoprene
20 90038700 1 1 1 1 O-Ring - Nitrile
20 91000015 1 1 1 1 O-Ring - EPR Food Grade
20 91001385 1 1 1 1 O-Ring - Viton A
20 90038770 1 1 1 1 O-Ring - Neoprene
21 90038768 1 1 1 1 O-Ring - Nitrile
22 50092847 1 1 1 1 Shaft Seal - Teflon
23 90004462 4 Lock Washer - Stainless (Type 410)
24 2U775700 2 Strip - Stainless
25 90035048 4 Cap Screw - Stainless
26 2U775800 1 Perforated Plate - Stainless (Type 304)
27 2U773600 1 Wire Cloth - Stainless (Type 304)
28 2U775900 1 Cloth Retainer - Stainless
29 2L054800 1 Bee Screen Kit
APPLICATION MATERIAL
30 90035095 2 2 2 2 Bolt - Seal
31 90002659 2 2 2 2 Nut - Seal
32 50094546 1 1 1 1 Seal
33 90038882 1 1 1 1 Gasket - Viton A
34 90002212 2 2 2 2 Nut
35 90001227 2 2 2 2 Bolt
19 O-ring- Please select from the table
20 O-ring- Please select from the table
  • Type | STDP* | AAR Rated SCFM
  • 1128 | 75 lb. | 1358 @ 85 PSIG
  • S1128 | 75 lb. | 1358 @ 85 PSIG
  • HP1128| 150 lb. | 1924 @ 161 PSIG
  • *Start to Discharge Pressure
  • Nitrile 70 is standard for items 19 and 20.
  • Other O-Ring and Gasket materials available.
  • Material for stainless parts is type 316 unless otherwise noted.
  • 4 equally spaced 0.87" dia. holes on a 6.25" bolt circle.
  • 4.00" ID x 4.75" OD seat tongue - AAR Appendix E.
  • Valves can be supplied with either Tongue & Groove or Flat Face.
  • Items 30 and 31 to be installed diagonally opposite.
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