Caleffi 519 22mm - 519002 GLW Ecopas full flow differential bypass Valve
Product no: 519002 GLW
22mm Comp - Series 519 Ecopas Full Flow Differential Bypass Valve
(Independently tested to meet British Gas specifications) - 519002GLW
Size: 22mm compression x compression
Differential bypass valve for use on heating systems where control is by zone or thermostatic radiator valves.
Fitted between flow and return permitting circulation through boiler and helps prevent unnecessary cycling of boiler
Independently tested t meet British Gas specifications.
Compression joints for use on copper pipes
Used in a system with variable flow rates
Simple to install, with only two joints to fix.
Can be fitted in any orientation
Approvals: WRAS
This 519 differential bypass valve uses a stainless steel compression spring to exert a pre-determined force onto the disc.
The force is adjustable via the control knob to set the required differential pressure between 1 to 6 metre head, which corresponds to 10 - 60 kPa. The setting is then locked using the locking screw, which is on the side of the control knob. This prevents unauthorised adjustment.
Details:
Body: Brass
Disc: Brass
Disc Face: EPDM
'O' rings: EPDM
Temperature range: 0 - 110 °C
Maximum working pressure: 10 bar
Medium: water, glycol solution
Maximum percentage of glycol: 30%
Setting range: 1 - 6 metre head/10 to 10 kPa
