Gate Valve Trim Chart

SERVICE CONDITIONSTrimBodyBonnetGateSeatStenBSR
General / Non CorrosiveAAA487 4D/413041304130413041301018
General / Slightly CorrosiveBBA487 4D/41304130410SS410SS17-4SS316SS
General, Moderately Corrosive, CO2CCCA6NM / 410SS410SS410SS410SS17-4SS316SS
Sour, Non-CorrosiveDD-NLA487 4D/413041304130413041301018 ZINC
Sour, Non-CorrosiveDD-0,5A487 4D/413041304130413017-4SS1018 ZINC
Sour, Slightly CorrosiveEE-0,5A487 4D/41304130410SS410SS17-4SS316SS
Sour Highly Corrosive, MOD Abrasive, CO2EE-1,5A487 4D/41304130410SS410SS410SS316SS
Sour Highly Corrosive, CO2, High AbrasiveEE-NLA487 4D/41304130410SS410SSNITRONIC 50*1316SS
Sour, Moderately Corrosive, H2SFF-0,5CA6NM / 410SS410SS410SS410SS17-4SS316SS
Sour, Highly Corrosive, CO2 and H2SFF-1,5CA6NM / 410SS410SS410SS410SS410SS316SS
Sour, Highly Corrosive, CO2 and H2SFF-NLCA6NM / 410SS410SS410SS410SSNITRONIC 50*1316SS
High Corrosion Extreme ServiceHH-NL *34130 w/625 Inlay4130 w/625 InlayINCONEL 718 *2INCONEL 718 *2INCONEL 718 *2316SS

NOTES:

  1. INCONEL 718 IS AVAILABLE AS AN UPGRADE.
  2. INCONEL 718 IS ONLY “NL” FOR TEMPERATURES K THRU U. INCONEL 725 CAN BE USED UP TO TEMP X.
  3. CRA MATERIAL IS NOT AVAILABLE FOR TEMP Y SERVICE.
  4. STANDARD TRIM PARTS ARE QPQ NITRIDED.
  5. TUNGSTEN CARBIDE, HVOF, HARDFACED GATES AND SEATS ARE AVAILABLE FOR ANY TRIM UPON REQUEST.
TRIM CODEAPI SPEC.6A RETAINED FLUID RATING MATERIAL CLASSEXPLANATION
T-21AASTANDARD TRIM
For essentially noncorrosive liquids or gases. Typical examples are crude
and refined oils, natural or refined gases and processed hydrocarbons.
Typical uses are wellheads, manifolds, flowlines and other similar
installations requiring a through conduit valve. The temperature limitations
are 0 degrees to 250 degrees F.
T-22BBSTAINLESS TRIM
For substantially the same service as T-21 but where the corrosion
resistance of 13 Chrome Stainless Steel internal parts are desirable. Also
usable for mildly corrosive fluids and gases when limited corrosion of the
internal body surfaces can be tolerated. The temperature limitations are
0 degrees to 250 degrees F. Recommended when partial pressure of CO2
is greater than 30.
T-23CCFULL STAINLESS TRIM
For any liquid or gaseous product for which the resistance of the 13
Chrome Stainless is adequate. Also used where the resistance of Stainless
Steel is desirable from the standpoint of product purity. The temperature
limitations are 0 degrees to 250 degrees F. Recommended when partial
pressure of CO2 is greater than 30.
T-24EESOUR GAS AND OIL
Primarily for sour gas and oil where resistance to Hydrogen Sulfide
embrittlement is required. Also suitable for other chemicals, products or
hydrocarbons when H2S is present. May be used when CO2 is present in
smaller amount than H2S. The temperature limitations are 0 degrees to
250 degrees F.
T-26FFSTAINLESS SOUR GAS AND OIL TRIM
Primarily for sour gas and oil when the CO2 content exceeds the H2S
content. It is intended to provide resistance to the metal loss type of
corrosion usually associated with CO2 plus resistance to Hydrogen Sulfide
embrittlement. The temperature limitations are 0 degrees to 250 degrees F.
T-27WATERFLOOD (UNINHIBITED)
Primarily for use in untreated or uninhibited brackish saline water typically
associated with oilfield waterflood projects and/or disposal wells in which
the internal plastic coating of the body surfaces provides resistance to salt
water corrosion. The internal parts are also resistant to Sulfide
embrittlement and corrosion. The temperature limitations are 0 degrees
to 250 degrees F.
T-36AALOW TEMPERATURE - STANDARD TRIM - GENERAL OILFIELD
For essentially noncorrosive liquids or gases. Typical examples are crude
and refined oils, natural or refined gases and processed hydrocarbons.
Typical uses are wellheads, manifolds, flowlines and other similar
installations requiring a through conduit valve. The temperature limitations
are -50 degrees to 180 degrees F.
T-37EELOW TEMPERATURE -SOUR GAS AND OIL
Primarily for sour gas and oil where resistance to Hydrogen Sulfide
embrittlement is required. Also suitable for other chemicals, products or
hydrocarbons when H2S is present. May be used when CO2 is present in
smaller amount than H2S. The temperature limitations are -50 degrees to
180 degrees F.