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National Board and ASME Accepted Testing Laboratories


Please contact the applicable facility for confirmation of their ability to test a particular valve. Also, please note that valves usually cannot be tested at both the maximum pressure and maximum capacity limits simultaneously.

For a list of Authorized Observers at a specific facility, please contact the facility directly.

Name/Address Fluids      Pressure   Size       Capacity
Anderson Greenwood Crosby
901 Co. Rd. 473
El Campo, TX 77437
281.274.4400
 
Nitrogen
Water
 
1000 psi
1000 psi
 
8"
4"
 
10-70000 scfm
5-2000 gpm
 
BS&B Safety Systems. LLC
7455 East 46th Street
Tulsa, OK 74145
918.622.5950
 
Air 275 psi 4" 2000 scfm
Continental Disc Corp.
3160 West Heartland Drive
Liberty, MO 64068
816.792.1500
 
Air
Air
Water
 
200 psi
650 psi
650 psi
 
4"
4"
4"
 
7200 scfm
6000 scfm
900 gpm
 
Dresser, LLC
12970 Normandy Blvd
Jacksonville, FL 32221
904.570.3150
 
Nitrogen
Water
 
700 psi
500 psi
 
4"
3"
 
4700 scfm
500 gpm
 
Farris Engineering
10195 Brecksville Road
Brecksville, OH 44141
440.838.7690
 
Air
Air
Water
Water
 
880 psi
500 psi
600 psi
700 psi
 
4"
6"
4"
4"
 
8000 scfm
8000 scfm
165 gpm
1059 gpm
 
Fike Corporation
704 SW 10th Street
Blue Springs, MO 64015
816.655.4615
 
Nitrogen 285 psi 4" 7000 scfm
Framatome GmbH
Technical Center - Components Qualification
Seligenstaedter, Strasse 100
Karlstein am Main
Germany 63791
+49.9131.900.69318
Steam
 
2600 psi (18 MPa)
 
2"
 
63,000 pph (8 kg/sec)
 
Leser GmbH & Company, KG
Wendenstrasse 133 - 135
D-20537 Hamburg, Germany
+49.40.25165-100
Air
Water
 
1450 psi
610 psi
 
16"
16"
 
24964 scfm
1057 gpm
 
Oseco, Inc.
1701 West Tacoma Street
Broken Arrow, OK 74012
918.258.5626
Air 700 psi 4" 12000 scfm
The National Board of Boiler 
& Pressure Vessel Inspectors

7437 Pingue Drive
Worthington, OH 43085
614.888.8320
 
Steam
Nitrogen
Nitrogen
Nitrogen
Water
 
500 psi
580 psi
1100 psi
2025 psi
500 psi
 
4"
6"
4"
3"
4"
 
12000 pph
13000 scfm
15000 scfm
5000 scfm
550 gpm
 
Updated: 12/07/23