Untitled - COMEVAL

Unival® BUTTERFLY VALVES
Engineering Data
Data Sheets Manual
Pressure / Temperature Chart according to EN 1092-1/2
The following graphs represent the Temperature / Pressure relation for all metal seated valves, strainers and other flow control
products made out in the following pressure retaining shell materials:
-Cast Iron EN-GJL-250
-Ductile Iron EN-GJL-400
-Carbon Steel 1.0619+N
-Stainless Steel 1.4408
-And for Design Pressures up to PN 40.
All products with resilient seat or other components are subject to temperature restrictions governed by these resilient materials.
PN 25 / PN 40
PN 16 / PN 25
PN 6 / PN 16
bar
40
35
30
25
20
16
15
10
6
5
GS-C25 N
up to 400ºC
GGG-40.3
up to 350ºC
GG-25
up to 300ºC
40
6
21
16
(1)Graphic section. Valve metal/metal sealing, construction DIN for pressure ratings
PN6-40.Cast iron construction material GG25, spheroidal casting GGG40.3, carbon
steel GSC25N and stainless steel casting 1.4408.
35
20
ºC
-10 120 250 350
0 100 200 300 400
22
13
32
28
5 5
17
16 13
24
15
16
10
40
35
30
25
20
21
15
10
5
40
PN 40
PN 25
PN 16
bar
35
40
Stainless steel G-X6 Cr Ni Mo 1810
Temp. range. -60ºC up to +400ºC
40
35
30
32,5
30
25
20
16
15
10
6
5
25
16
-60 -40 -20 0 20 50 150
100 200
20
13
28,5
17,5
Data subject to change without prior notice
12
25
15,5
10
23
14,5
9,5
250
25
20
21
15
13 10
8,5
5
ºC
300
400
(1) For valves with elastic closing plugs or PTFE
Notes: Check maximum recommended temperatures for elastomers as defi ned by each product’s specifi cation (see fi le).
(2) In those cases where there might occur some minor deviation or discrepency between the specifi c chart curves represented in each data sheet and the ones
seen herein, generally, the product version should take precedence.
6