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Genie Counter Balance Valve
Part number:36188GT 36188
Description: Genie 2000 PSI Counterbalance Valve (Genie 36188, 36188GT)
VALVE,COUNTERBAL.CACA-LHN@2000, Genie Parts
3:1 Pilot Ratio, Vented Counterbalance Valve - Atmospherically Referenced
Used For Genie S-60 S-65 S-80 S-85 TMZ-34/19 TMZ-50/30

Specifications
​Length (mm)130
Width (mm)50
Height (mm)50
Weight (kg)0.4
FAQ
What happens to the counterbalance valve if I have backpressure in my system?
Backpressure at port 2 (inlet) may adversely effect the operation of a three port counterbalance valve as it directly opposes pilot pressure. When backpressure exceeds pilot pressure, it adds to the setting of the valve at a rate of 1 plus the pilot ratio times the backpressure, i.e. with 200 psi (14bar) back pressure at port 2 on a 3:1 counterbalance valve, the setting would increase by 800 psi (55 bar). In effect, backpressure drives the counterbalance valve closed. Using vented counterbalance valves typically will correct this problem.
How do I decide which pilot ratio to select?
The vast majority of counterbalance applications are satisfied with a 3:1 pilot ratio. Lower pilot ratios will increase system stability and higher ratios will be more efficient. 10:1 pilot ratio valves generally should be avoided.
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