Cast Steel Bolted Bonnet Gate Valves

 

Materials of Construction


Cast Steel Bolted Bonnet Gate Valves - Components and Materials of Construction
  Part Name Material
54 Handwheel Nut Carbon Steel
50 Handwheel Malleable or Ductile Iron
31 Yoke sleeve Bronze
56 Yoke sleeve Jam Nut Carbon Steel
5 Grease Fitting Carbon Steel
77 Yoke (See Note H) See notes
16a Eyebolt Nut Carbon Steel
36 Gland Flange Carbon Steel
52 Eyebolt Carbon Steel
35 Gland 300 Series SS
49 Eyebolt Pin Carbon Steel


  Trim Parts
32 Bonnet Stem Bushing
70 Stem (400 Series SS or 17-4 PH SS)
71 Wedge (See Note 1)
11 Seat Ring (See Note 1)
See below for balance
  • Note 1: Wedge and seat ring may either be solid facing material or a base material equal to or better than the body/bonnet material with facing as shown.
  • Note 2: The above table lists typical materials of construction. Actual material will meet customer requirements.



  Part Name Carbon Steel LCB LC3 WC6 WC9
46 Packing (G) Graphitic Graphitic Graphitic Graphitic Graphitic
30 Bonnet ASTM A216 Gr WCB ASTM A352 Gr LCB ASTM A352 Gr LC3 ASTM A217 Gr WC6 ASTM A217 Gr WC9
55 Bonnet Gasket          
  Class 150 (E) Mild Steel Corr. 304 SS Corr. 304 SS Corr. 304 SS Corr. 304 SS
  Class 300 and up Steel (F) 304 SS (F) 304 SS (F) 304 SS (F) 304 SS (F)
16b Bonnet Stud Nuts ASTM A194 Gr 2H ASTM A194 Gr 7 ASTM A194 Gr 7 ASTM A194 Gr 2H ASTM A194 Gr 2H
98 Bonnet Studs ASTM A193 Gr B7 ASTM A320 Gr L7 ASTM A320 Gr L7 ASTM A193 Gr B7 (B) ASTM A193 Gr B7 (B)
10 Body ASTM A216 Gr WCB ASTM A352 Gr LCB ASTM A352 Gr LC3 ASTM A217 Gr WC6 ASTM A217 Gr WC9
  Part Name C5 C12 CA6NM CF8C CF8M
46 Packing (H) Graphitic Graphitic Graphitic Graphitic Graphitic
30 Bonnet ASTM A217 Gr C5 ASTM A217 Gr C12 ASTM A487 Gr CA6NM ASTM A351 Gr CF8C ASTM A351 Gr CF8M
55 Bonnet Gasket          
  Class 150 (E) Corr. 304 SS Corr. 304 SS Corr 304 SS Corr. 347 SS Corr. 316 SS
  Class 300 and up 304 SS (F) 304 SS (F) 304 SS (F) 347 SS (F) 316 SS (F)
16b Bonnet Stud Nuts ASTM A194 Gr 2H (C) ASTM A194 Gr 2H (C) ASTM A194 Gr 2H ASTM A194 Gr 2H (D) ASTM A194 Gr 2H (I)
98 Bonnet Studs ASTM A193 Gr B7 (C) ASTM A193 Gr B7 (C) ASTM A193 Gr B7 ASTM A193 Gr B7 (D) ASTM A193 Gr B7 (I)
10 Body ASTM A217 Gr C5 ASTM A217 Gr C12 ASTM A487 Gr CA6NM ASTM A351 Gr CF8C ASTM A351 Gr CF8M
  • (A) Limits std. const. to +1000°F (538°C). Special const. for maximum temperature between +1000°F (538°C) and +1100°F (593°C) available on application.
  • (B) Limits std. const. to +1000°F (538°C). Special const. for maximum temperature between +1000°F (538°C) and +1200°F (649°C) available on application.
  • (C) Limits std. const. to temperature between -20°F (-29°C) and +1000°F (538°C). Special const. for temperature between +1000°F (538°C) and +1200°F (649°C) available on application.
  • (D) Limits std. const. to temperature between -20°F (-29°C) and +1000°F (538°C). Special const. for lower temperature or temperature between +1000°F (538°C) and +1200°F (649°C) available on application.
  • (E) 1½”, 2” & 3” Class 150 valves use a spiral wound graphite gasket the same size as Class 300 valves.
  • (F) Spiral wound construction.
  • (G) For services over 850°F (454°C) CNI recommends special high temperature packing. Please consult factory when ordering.
  • (H) Integral yoke illustrated, on larger sizes, the yoke may be separate from the bonnet.
  • (I) Limits std. const. to temp. between -20o F. and 1,000o F. Special construction for lower temp. or temp. between 1000o F. and 1,200o F available on application.

THE RIGHT IS RESERVED TO CHANGE OR MODIFY PRODUCT DESIGN OR CONSTRUCTION WITHOUT PRIOR NOTICE AND WITHOUT INCURRING ANY OBLIGATION TO MAKE SUCH CHANGES AND MODIFICATIONS ON PRODUCTS PREVIOUSLY OR SUBSEQUENTLY SOLD.


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