The Erie™ Modulating PopT op™ Series valve actuator
assemblies are designed for closed hydronic heating
and cooling systems. The Modulating PopTop is used
to control fluid flow in fan coil units, VAV reheat, unit
ventilators, AHUs and radiant applications.
The Modulating PopTop Proportional (P) type is
compatible with any 0 to 10 Vdc or 4 to 20 mA signal
with jumper selectable operating range and action
resulting in precise positioning. The floating (T) type is
compatible with any 24 Vac three-wire signal when
three minute time-out logic resides in the valve actuator
or system controller.
The Modulating PopTop valve assemblies allow the
actuator to be snapped onto, or off from, the valve
body. The actuator can be mounted after the valve
body has been installed into the system without the
need for linkages or calibration.
Available in standard (non-spring return) and spring
return modulating actuators. The two-way spring return
modulating actuators are provided in either normally
open or normally closed operation. The three-way
valves are available in normally closed operation only.
Valve body reversal provides normally open flow for
three-way valve bodies.
Erie VM PopTop Series
Modulating Valves
Floating "T" & Proportional "P"
Standard and Spring Return Modulating Valves
General Instructions
Features
• Magnetic clutch to maxi mize the life of the motor and
Shipping & Storage, -40 to 158°F (-40 to 70°C)
Operating, 35 to 125°F (2 to 52°C).
Fluid, 32 to 200× F (0× to 93× C) (not steam rated).
Humidity: 5 to 95% RH, non-condensing.
Seat Leakage: ANSI class IV (0.01%)
Shipping Weight: 1.9 lbs (860 g), actuator and valve body.
Location: NEMA Type 1.
Agency Listings (Actuator Only):
UL873: Underwriters Laboratories (File #E9429 Category Tempera tu re Indicating and
Regulating Equipment) Class 2.
CUL: UL Listed for use in Canada by Underwriters Laboratory. Canadian Standards C22.2
No. 24.
European Community: CE Approved.
Australia: This product meets the requirements to bear the C-Tick Mark according to the
terms specified by the Communications Authority under the Radio Communications Act of
1992.
T ab le-1 Flow Coefficients & Maximum Close-Off Differential Pressu r e.
Valve
Size in.
Connection Type
Flow Coefficient
Cv (kv)
Non-Spring
Operating Mode
(Driven Close)
Maximum Close-Off DP, PSI (kPa)
Spring Return
Operating Mode
(Driven Closed)
Spring Return
Power Failure Mode*
(Spring Close) PSID
1/2NPT, SW, SAE, Rp1.0 (0.9)50 (344)50 (344)50 (344)
1/2NPT, SW, SAE, R p
2.0 (1.8)50 (344)50 (344)20 (138)
3/4NPT, SW, Rp
1/2NPT, SW, SAE, R p
4.0 (3.5)35 (241)35 (241)20 (138)3/4NPT, SW, SAE, R p
1SW
3/4NPT, SW, Rp7.5 (6.5)35 (241)35 (241)15 (103)
1SW, Rp
8.0 (6.9)35 (241)35 (241)15 (103)
1-1/4SW
*If valve is driven closed before a power failure, the "operating mode" close- off pressures apply.
Valve Body Legend