Technical Specifications

12 | GE Energy
19
Ref.
No.
Temperature Range -29°C
232°C
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PTFE Packing
304 St. St. ASTM A479 TY 304
304 St. St. ASTM A479 TY 304
316 St. St. ASTM A479 TY 316 (HRC 22 Max.)
316 St. St. ASTM A479 TY 316 with Hardfaced Seat
(HRC 22 Max.)
15
316 St. St. ASTM A479 TY 316 (HRC 22 Max.)
316 St. St. ASTM A479 TY 316 with Hardfaced Seat
(HRC 22 Max.)
16 Upper Seat Ring
Lower Seat Ring
17
Packing
18
Lantern Ring (Optional)
Packing Follower
Temperature Range
-20°F 450°F
Materials of Construction
NACE Materials Construction
Ref.
No.
Description Standard and Optional Materials
(1)
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1) Materials and processes in accordance with the requirements of NACE specification MR0103, 2003.
Applications requiring compliance to MR0175, 2003 Rev. or ISO 15156 would require engineering review.
2) ASTM A638 Gr 660 will be substituted in applications when required due to the differential pressure.
3) Materials designated for these parts conform to NACE Class III (unexposed) bolting requirements.
4) Materials designated for these parts conform to NACE Class I or Class II (exposed) bolting requirement.
5) Zinc plating is mandatory for St. Steel construction only.
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