Data Sheet for Product

MVL661… Modulating Refrigerant Valves Technical Instructions
Valves with Magnetic Actuator Document Number 155-400
May 11, 2016
Page 9
Electrical connections
Cable entry glands 3 × ø × 17 mm (for M16)
Min. wire size 20 AWG (0.75 mm
2)
Max. cable length See Connection Type
Functional data of valve
Nominal pressure 232 psi (PN 16)
Permissible Operating pressure
1)
max. 652 psi (45 bar)
Max. differential pressure pmax 363 psi (25 bar)
1-1/4-inch (DN32): 29 psi (2 bar)
Valve characteristic (stroke vs. C
V
or k
V
) Linear (to VDI/VDE2173)
Leakage rate (internally across seat) Max. 0.002% C
V
(K
V
) or
Max. 1 NI/h gas at p = 58 psi (4 bar)
Shut/off function, like solenoid
normally closed (NC) function
External seal Hermetically sealed (fully welded, no
static or dynamic seals)
Permissible media Commonly used safety refrigerants
(R22, R134a, R227ea, R404A,
R407C, R410A, R422D, and so on)
and R744 (CO
2
)
Not suitable for flammable
refrigerants
2
Not suitable for ammonia (R717).
For refrigerants belonging to Fluid
group 1, please contact your local
Siemens representative.
Media temperature -40°F to 248°F (-40°C to 120°C),
Max. 284°F (140°C) for 10 min.
Stroke resolution H/H100 1:1000 (H = Stroke)
Hysteresis Typically 3%
Mode of operation Modulating
Position when de-energized Control path A → AB closed
Orientation: Upright to horizontal
Materials
Valve body and parts Steel/CrNi steel
Seat/piston CrNi steel/brass
Sealing disk PTFE
Pipe connections
Sleeves Internally soldered, CrNi steel
Ambient conditions
Temperature
Operation -13°F to 131°F (-25°C to 55°C)
Transport -13°F to 158°F (-25°C to 70°C)
Storage 23°F to 113°F (-5°C to 45°C)
Humidity
Operation 10 to 100% rh
Transport < 95% rh
Storage 5 to 95%
Miscellaneous
Weight See Figure 13.
Dimensions See Figure 13.