Noz-Chek Valves


Ordering Number System

  24"     NC     30      S      M      F    
Valve Size   Style   Pressure Class   Body & Trim   Seal   End Connection   Modification Number

Description: 24" Style NC, ASME Class 300, Carbon Steel Body, Buna-N Seal,
Raised Face Flanges (No Modifications)

Valve Size - Nominal valve sizes are expressed in inches


Ordering Letter Body Style Size Range
NC Integral Body,
Standard Pattern
2" - 60"
(50 mm - 1500 mm)
NCS Integral Body,
Short Body Pattern
8" - 60"
(400­ mm - 1500 mm)


Operating temperature for general guidance only

Code Letter Seal Material Operating Temp.
°C °F
M Buna-N -57 to 120 -70 to 250
V Viton-B® -40 to 204 -40 to 400
P Metal -257 to 537 -450 to 1000
Z EPDM* -57 to 120 -70 to 250

Viton® is a registered trademark of DuPont Performance Elastomers L.L.C. Metal seats may be furnished as integral, or special overlay materials are available.

Flange Series

No. Class
15 150
30 300
60 600
90 900
150 1500
250 2500
450 4500

Standard Body & Disc Materials

Code Body Disc
S ASTM A 216 GR WCB carbon steel alloy steel
C ASTM A 351 GR CF8M 316 stainless steel stainless steel
E ASTM A 217 GR CA15 410 stainless steel 11-13 chrome
GC ASTM A 352 GR LCC low temp. carbon steel alloy steel
DZ ASTM A890 GR 4A duplex stainless steel Duplex SS

Spring Material

Material Maximum Recommended Operating Temperatures
°C °F
316 Stainless Steel 120 250
Inconel 600® 315 600
Inconel X-750® 537 1000

Inconel® is a registered trademark of Special Metals Corporation. For temperatures up to 600°F (315°C), Inconel will be furnished as standard.
For service temperatures above 600ºF (315ºC)., Inconel X-750 springs will be specified. Other alloy spring materials are available to meet specific requirements.

End Connections

Ordering Letter Connections
F Flanged-Raised Faced
X Flanged-Flat Faced
G Grayloc® End
P Flanged Smooth Finish
R Flanged Ring Joint
W Butt Weld

Grayloc® is a registered trademark of Oceaneering International, Inc.


A modification number is assigned when non-standard features, material mixes or documentation are ordered.

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