Überströmventile gehören zu der Gruppe der Regelarmaturen. Sie werden in Systemen gebraucht, um ein Medium schnell in großen Mengen umzuleiten. Eingesetzt werden Überströmventile in Rohrleitungssystemen mit unterschiedlichen Volumenströmen, um einen schlagenden oder steigenden Druck auszugleichen.
Angular shape, spring-loaded. Completely closed oiltight and gastight upper part,
adjustable under operating conditions without medium escaping to the outside.
Type 418 tGFO NBR: seat NBR, o-ring: NBR, temperature: max. 130°C
Type 418 tGFO FKM: seat FKM, o-ring: EPDM, temperature: max. 200°C
Type 418 tGFO PTFE: seat PTFE, o-ring: FKM, temperature: max. 225°C
Ranges of adjustment: 0,2 - 1,2 bar / 1,2 - 3,0 bar / 2,0 - 12,0 bar / 12,0 - 30,0 bar
Straightway form, spring-loaded. Completely closed gastight upper part,
adjustable under operating conditions without medium escaping to the outside, body: 1.4408
Type 430 mGFO EPDM: seat EPDM, temperature: max. 95°C
Type 430 mGFO FKM: seat FKM, temperature: max. 200°C
Ranges of adjustment: 0,5 - 2 bar / 1,5 - 6 bar / 5,5 – 10 bar
With flange connection, body: 1.4408, PN 40, manometer connection G 1/4"
Type 431 mGFO EPDM: seat EPDM, temperature: max. 95°C
Type 431 mGFO FKM: seat FKM, temperature: max. 200°C
Ranges of adjustment: 0,5 - 2 bar / 1,5 - 6 bar / 5,5 – 10 bar, DN 65-80: 1-6 bar
Angular shape, spring-loaded. Completely closed, oiltight and gastight upper part, also suitable
as overflow valve in the event of back pressure. Setting can be sealed.
Type 618 tGFO: Standard with Perbunan gasket. For liquids and gaseous media,
Medium temperature up to 130 °C (optional with PTFE-seal for max. 225°C)
Set pressure: 0,5 - 2,5 bar / 2,0 - 12,0 bar / 12,0 - 20,0 bar
Straightway form, spring-loaded. Completely closed gastight upper part,
adjustable under operating conditions without medium escaping to the outside, body: red brass
Type 630 mGFO EPDM: seat EPDM, temperature: max. 95°C
Type 630 mGFO FKM: seat FKM, temperature: max. 200°C
Ranges of adjustment: 0,5 - 2 bar / 1,5 - 6 bar / 5,5 – 10 bar
With flange connection, body: red brass, PN 40, manometer connection G 1/4"
Type 631 mGFO EPDM: seat EPDM, temperature: max. 95°C
Type 631 mGFO FKM: seat FKM, temperature: max. 200°C
Ranges of adjustment: 0,5 - 2 bar / 1,5 - 6 bar / 5,5 – 10 bar, DN 65-80: 1-6 bar
In straight through form with diaphragm actuator, diaphragm: NBR,
operating mode: the valve opens when the upstream pressure rises
body: 0.7043, PN 16
body: 1.0619, PN 40
in straight through form, spring controlled,
operating mode: the valve opens when the upstream pressure rises
Fig. 12.753: body: GG-25, PN 16
Fig. 22.753: body: GGG-40.3, PN 16
Fig. 32.753: body: 1.0619+N, PN 16
Fig. 52.753: body: 1.4408, PN 16
In straight through form with diaphragm actuator, diaphragm: NBR, max. 100°C or EPDM, max. 110°C,
operating mode: the valve opens when the upstream pressure rises
Fig. 12.705: body: GG-25, PN 16
Fig. 22.705: body: GGG-40.3, PN 16
Fig. 23.705: body: GGG-40.3, PN 25
Fig. 34.705: body: 1.0619+N, PN 25
Fig. 35.705: body: 1.0619+N, PN 40
