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Design and principle of operation
Table 3-1: Technical data · All pressures in bar (gauge)
Nominal size
Standard
K
coefficient
Special version
VS
Flanged body
Standard
X
value
Fz
Flanged body
Types 45-2 and 45-4
Pressure rating
Types 45-1 and 45-3
Max. permissible differential pressure ∆p
across the regulator
Max. permissible temperature
Pressure above adjusted differential
pressure set point at which internal excess
pressure limiter responds (Type 45-3 and
Type 45-4)
Conformity
Type 45-2 and Type 45-
Differential
4: continuously adjustable
pressure set
Type 45-1 and Type 45-3:
point ranges
fixed set point
Diaphragm and seals made of FKM; PN 25 version only
1)
For PN 16 version
2)
Additional version: regulator with flanged body made of spheroidal graphite iron (EN-GJS-400-18-LT)
3)
For Type 45-4 only
4)
Table 3-2: Materials · Material numbers according to DIN EN
Types 45-1, 45-2, 45-3 and 45-4 Regulators
Housing
Seat
PN 25
Plug
PN 16
PN 25
Diaphragm case
PN 16
Valve springs
Operating diaphragm
Seals
Additional version in DN 32, 40 and 50: valve with flanged body made of spheroidal graphite iron
1)
Special version in PN 25, e.g. for mineral oils: FKM
2)
3-6
DN 15
4.0
0.4 · 1.0 · 2.5
0.6
PN 16 · PN 25
20 bar/10 bar
Liquids: 150 °C/130 °C
0.1 to 0.5 bar
0.5 to 2.0 bar · 1.0 to 4.0 bar · 2.4 to 6.3 bar · 6.0 to 10.5 bar
0.1 bar · 0.2 bar · 0.3 bar · 0.4 bar · 0.5 bar
CC499K (red brass Rg 5) · Spheroidal graphite iron EN-GJS-400-18-LT
Brass, resistant to dezincification, with EPDM soft seal
Brass, resistant to dezincification and plastic with EPDM soft seal
CC499K (red brass, Rg 5)
EPDM with fabric reinforcement
DN 20
DN 25
DN 32
6.3
8.0
–
–
PN 25
2)
· Air and nitrogen: 150 °C
2)
0.5 bar
·
· 0.1 to 1.0 bar
4)
Stainless steel 1.4305
DC 01
Stainless steel 1.4310
EPDM
2)
DN 40
DN 50
3)
3)
12.5
16
20
–
12.5
20
25
0.55
0.45
0.45
0.40
PN 25
16 bar
1)
0.2 to 1.0 bar
1)
2)
2)
EB 3124 EN
3)
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