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
FL050FFBL-PN40 50MM NB MS FF BLIND FLG BS 4504 105 PN25/40
2 In Stock for despatch
£52.60 (exc VAT) per EACH
£63.12 (inc VAT)
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FL065FFBL-PN40 65MM NB MS FF BLIND FLG BS 4504 105 PN25/40
8 In Stock for despatch
£73.10 (exc VAT) per EACH
£87.72 (inc VAT)
-
+
FL080FFBL-PN40 80MM NB MS FF BLIND FLG EN1092-1 PN25-40
4 In Stock for despatch
£117.60 (exc VAT) per EACH
£141.12 (inc VAT)
-
+
FL100FFBL-PN40 100MM NB MS FF BLIND FLG EN1092-1 PN25-40
7 In Stock for despatch
£96.30 (exc VAT) per EACH
£115.56 (inc VAT)
-
+
FL125FFBL-PN40 125MM NB MS FF BLIND FLG EN1092-1 PN25-40
1 In Stock for despatch
£180.00 (exc VAT) per EACH
£216.00 (inc VAT)
-
+
FL150FFBL-PN40 150MM NB MS FF BLIND FLG EN1092-1 "PN25-40"
Out of Stock
£274.20 (exc VAT) per EACH
£329.04 (inc VAT)
-
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FL200FFBL-PN40 200MM NB MS FF BLIND FLG EN1092-1 "PN40" FLANGE
Out of Stock
£415.00 (exc VAT) per EACH
£498.00 (inc VAT)
-
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FL250FFBL-PN40 250MM NB MS FF BLIND FLG EN1092-1 "PN40"
Out of Stock
£576.20 (exc VAT) per EACH
£691.44 (inc VAT)
-
+
FL300FFBL-PN40 300MM NB MS FF BLIND FLG EN1092-1 "PN40"
Out of Stock
£715.00 (exc VAT) per EACH
£858.00 (inc VAT)
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