PN40

PN40

A PN40 flange has a fixed nominal pressure rating of 40 bar (approximately 580 psi).

Unlike the ASME/ASA system, the PN system uses a single pressure class designation that assumes the maximum pressure is at ambient temperature (around 20°C).

The maximum working pressure for a PN40 flange generally decreases if the temperature rises significantly.
 
Maximum Working Pressure for PN40 Flanges
 
Temperature RangePN40 Max Pressure (bar)
Up to 20°C (Ambient) 40 bar
Above 20°C (e.g., 100°C) Pressure derates based on material

For common materials:
  • Steel (Carbon or Stainless): The 40 bar rating is typically maintained across a wide temperature range if the material allows for it.

No detailed specifications are available for this product.

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Code Description Price Quantity
FL020WNRF-PN40 20MM NB WELD NCK RF FLG EN1092-1 PN10-40 A105 STD WGT
Out of Stock
£54.50 (exc VAT) per EACH
£65.40 (inc VAT)
-
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FL025WNRF-PN40X 25MM NB WELD NCK RF FLG PN40 X/S WALL
Out of Stock
£103.50 (exc VAT) per EACH
£124.20 (inc VAT)
-
+
FL032WNRF-PN40 32MM NB WELD NCK RF FLG BS 4504 111 PN25/40 DIN
Out of Stock
£34.20 (exc VAT) per EACH
£41.04 (inc VAT)
-
+
FL032WNRF-PN40A 32MM NB RF WELD NECK FLG STD WGT PN16/25/40 (A105)
Out of Stock
£81.40 (exc VAT) per EACH
£97.68 (inc VAT)
-
+
FL040RFWN-PN40X 40MM NB WELD NCK RF FLG BS 4504 111 PN40 X/STRG
Out of Stock
£82.00 (exc VAT) per EACH
£98.40 (inc VAT)
-
+
FL050WNRF-PN40B 50MM NB WELD NCK RF FLG EN1092-1 PN25-40
1 In Stock for despatch
£41.00 (exc VAT) per EACH
£49.20 (inc VAT)
-
+
FL050WNRF-PN40S 50MM NB WELD NCK RF FLG EN1092-1 PN25-40 *STD WT*
4 In Stock for despatch
£135.00 (exc VAT) per EACH
£162.00 (inc VAT)
-
+
FL065WNRF-PN40 65MM NB WELD NCK RF FLG EN1092-1 PN25-40 DIN THK
5 In Stock for despatch
£58.20 (exc VAT) per EACH
£69.84 (inc VAT)
-
+
FL065WNRF-PN40A 65MM NB PN25-40 RF WELD NECK FLG A105 (STD WGT)**
6 In Stock for despatch
£127.50 (exc VAT) per EACH
£153.00 (inc VAT)
-
+
FL080WNRF-PN40 80MM NB WELD NCK RF FLG EN1092-1 PN25-40 STD WGT
1 In Stock for despatch
£163.60 (exc VAT) per EACH
£196.32 (inc VAT)
-
+
FL100RFWN-PN40 100MM WELD NCK RF FLG EN1092-1 PN25-40
Out of Stock
£221.80 (exc VAT) per EACH
£266.16 (inc VAT)
-
+
FL125WNRF-PN40 125 MM NB WELD NCK RF FLG EN1092-1 PN25-40
2 In Stock for despatch
£367.70 (exc VAT) per EACH
£441.24 (inc VAT)
-
+
FL150WNRF-PN40 150 MM NB WELD NCK RF FLG EN1092-1 "PN25-40"
1 In Stock for despatch
£290.00 (exc VAT) per EACH
£348.00 (inc VAT)
-
+
FL150WNRF-PN40S 150MM WELDNECK FLG EN1092 PN25/40 STD WT A105
Out of Stock
£290.00 (exc VAT) per EACH
£348.00 (inc VAT)
-
+
FL200WNRF-PN40 200 MM NB WELD NCK RF FLG EN1092-1 PN40
Out of Stock
£660.00 (exc VAT) per EACH
£792.00 (inc VAT)
-
+
FL300WNRF-PN40 300 MM NB WELD NCK RF FLG EN1092-1 PN40
Out of Stock
£920.80 (exc VAT) per EACH
£1,104.96 (inc VAT)
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