Gestra RK86

DISCO non-return valves RK 86

Product range Type
Nominal pressure
BB 11 G / 21 G
PN 6
12 G / 22 G
PN 10
14 G / 24 G
PN 16
BB 12 C / 22 C
PN 10
14 C / 24 C
PN 16
15 C / 25 C
PN 25
16 C / 26 C
PN 40
17 C
PN 63
18 C
PN 100
19 C
PN 160
BB 12 A / 22 A
PN 10
14 A / 24 A
PN 16
15 A / 25 A
PN 25
16 A / 26 A
PN 40
17 A
PN 63
18 A
PN 100
19 A
PN 160
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
2"
2 1/2"
3"
4"
5"
6"
8"
10"
12"
14"
16"
18"
20"
24"
28"
Body of grey cast iron (GG-25) Dual plate of SG iron (GGG-40)
EPDM gasket –10 to +150°C Body C 22.8 Dual plate 1.4006 –10 to +450°C
Body and dual plate of austenitic steel (1.4404) –200 to +500°C
Body of cast steel (GS-C 25) Dual plate of cast steel (GS-C 25) –10 to +450°C
Body of austenitic cast steel (1.4408) Dual plate of austenitic cast steel (1.4408)
–200 to +550°C
Available on request
BB valves with anti-corrosion lining
BB 11 G / 21 G
PN 6
12 G / 22 G
PN 10
14 G / 24 G
PN 16
11 G / 21 G
PN 6
12 G / 22 G
PN 10
14 G / 24 G
PN 16
Body of grey cast iron with hard-rubber lining Dual plates and other internals of bronze or austenitic steel
–10 to +90°C Body of grey cast iron with plastic lining Dual plates and other internals of bronze or austenitic steel
–10 to +90°C
All products available as DIN/EN or
ASME range.
Nominal sizes 800, 900 and 1000 in grey cast iron on request.
Optional items Anti-corrosion linings Special springs for very low opening
pressures Springs for reduced closing times Dampers for solving waterhammer
problems Hard-faced seat Purging plug Gaskets of EPDM, FPM, NBR and PTFE
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