Valveworks USA Products

Valves & Components
Valves and Componets
Wellhead Components
Wellhead Componets
Specialty Products
Specialty Products

Material selections should consider temperature, corrosion and abrasion

Material trims "DD" & above require NACE MR-01-75 material specifications, heat treat and physical properties

Nitride-Salt Bath-QPQ-Quench Polish Quench-provides superior rust, abrasion and galling prevention

Hardfacing HVOF Tungsten Carbide offers superior bonding density and does not alter the original pre-hardface properties of the base material with zero post heat treat required.

ENDURO-BOND™ is available for CS Body and Bonnet as a substitute for stainless steel

MATERIAL DESCRIPTION

  • A487 4D: Cast Carbon Steel (TEMPS K THRU Y)
  • 4130 CS: Forged, NQT (TEMPS K THRU Y)
  • 410SS: QDT (TEMPS P THRU Y)
  • 17-4SS: HH1150 (TEMPS K THRU Y)
  • INCONEL 718 API 6A 718 (CORROSION RESISTANT ALLOY)
  • 316SS Solution annealed used for critical service application

As specified in NACE MR-01-75:2009

4.2.3 Material Class Ratings

  1. General
    Equipment shall be designed with materials, including metallics, which meet requirements set forth in Table 4.3. Table 4.3 does not define either the present or future wellhead environment, but provides materials classes for increasing levels of severity of service conditions and corrosivity.

    Provided the mechanical properties can be met, stainless steels may be used in place of carbon and low alloy steels and also corrosion resistant alloys may be used in place of stainless steels.
  2. Material Classes
    Choosing material classes is the ulitmate responsibility of the user. In making these selections, the user should consider the various environmental factors and production variables listed in Appendix A.

Table 4.2 - Temperature Rating

Temperature Classification Operating Range
  °C °F
Min. Max. Min. Max.
K -60 82 -75 180
L -46 82 -50 180
N -46 60 -50 140
P -29 82 -20 180
S -18 60 0 140
T -18 82 0 180
U -18 121 0 250
V 2 121 35 250

 

Table 4.3 - Material Requirements

  Minimum Material Requirements
     
Material Class Body, Bonnet, End and Outlet Connection Pressure Controlling Parts, Stems and Mandrell Hangers
AA-General Service Carbon or low alloy steel Carbon or low alloy steel
BB-General Service Carbon or low alloy steel Stainless steel
CC-General Service Stainless steel Stainless steel
DD-Sour Servicea Carbon or low alloy steelb Carbon or low alloy steelb
EE-Sour Servicea Carbon or low alloy steelb Stainless steelb
FF-Sour Servicea Stainless steelb Stainless steelb
HH-Sour Servicea CRAb CRAb
  • aAs defined by NACE Standard MR0175.
  • bIn compliance with NACE Standard MR0175.

VALVEWORKS USA CERTIFIES THAT ALL PARTS MEET OR EXCEED INDUSTRY STANDARDS, NACE MR01-75.

VALVEWORKS USA STOCKS PARTS FOR EVERY TRIM, EVERY SERVICE, EVERY SIZE