Overflow protections type GSW 57 (DN15 – DN50)

Overflow protections type GSW 57 (DN15 – DN50)

Catalog sheet: 6.2.2

Overflow protections are automatic safety devices that block the gas flow in the pipeline if the set maximum value of maximum gas flow is exceeded. To recovery operation after closure of the flow is carried out automatically after the cause of the closure is removed.

Type DN V gas
(m3/h)
V air
(m3/h)
d 1 d 2 L (mm) SW Colour coding Catalogue No.
GSW 57 15 2,5 2 R½" Rp½" 52 27 yellow GSW5715025AI
GSW 57 20 1,6 1,3 R¾" Rp¾" 52 32 white GSW5720016AI
GSW 57 20 2,5 2 R¾" Rp¾" 52 32 yellow GSW5720025AI
GSW 57 20 4 3,2 R¾" Rp¾" 52 32 brown GSW5720040AI
GSW 57 25 2,5 2 R1" Rp1" 54 41 yellow GSW5725025AI
GSW 57 25 4 3,2 R1" Rp1" 54 41 brown GSW5725040AI
GSW 57 25 6 4,8 R1" Rp1" 54 41 green GSW5725060AI
GSW 57 32 10 8 R1¼" Rp1¼" 67 50 red GSW5732100AI
GSW 57 40 16 8 R1½" Rp1½" 76 60 orange GSW5740160AI
GSW 57 50 16 12,8 R2" Rp2" 80 70 orange GSW5750160AI


For pipelines:
DN15 – DN 50
Medium:
All types of gases according to EN 437 and DVGW AB G 260/1
Operating pressure:
15 – 100 mbar
Operating temperature:
-20ºC up to +60ºC
Closing flow:
925ºC
Flow rate for closure:
2.5–16 m3/h (colour coded)
Pressure loss:
<0,5 mbar
Automatic recovery after closure:
<30l/h při 100 mbar
Indication of gas flow direction:
Arrow on fitting body