Brochure

27
VALVES Snap Zone
™
Valve
Specifications
Model Number Part Number Description
Dimensions, in inches (mm)
Shipping
Weight,
lbs (kg)
D X Y Z
SZV-050S-4WE 109500 ½” SWT Zone Valve, 4 Wire 1.59 (40.3) 3.48 (88.5) 3.55 (90.2) 4.24 (107.7) 1.4 (0.6)
SZV-075S-4WE 109501 ¾” SWT Zone Valve, 4 Wire 2.02 (51.3) 4.28 (108.7) 3.55 (90.2) 4.42 (112.5) 1.4 (0.6)
SZV-100S-4WE 109502 1” SWT Zone Valve, 4 Wire 2.24 (56.9) 4.28 (108.7) 3.55 (90.2) 4.52 (114.9) 1.4 (0.6)
SZV-050N-4WE 109506 ½” NPT Zone Valve, 4 Wire 1.59 (40.3) 3.58 (91.0) 3.55 (90.2) 4.24 (107.7) 1.4 (0.6)
SZV-075N-4WE 109507 ¾” NPT Zone Valve, 4 Wire 2.02 (51.3) 4.18 (106.1) 3.55 (90.2) 4.42 (112.5) 1.4 (0.6)
SZV-100N-4WE 109508 1” NPT Zone Valve, 4 Wire 2.24 (56.9) 4.44 (112.7) 3.55 (90.2) 4.52 (114.9) 1.4 (0.6)
SZV-050S-000 109512 ½” Sweat Body 1.59 (40.3) 3.48 (88.5) – – 1.0 (0.4)
SZV-075S-000 109513 ¾” Sweat Body 2.02 (51.3) 4.28 (108.7) – – 1.0 (0.4)
SZV-100S-000 109514 1” Sweat Body 2.24 (56.9) 4.28 (108.7) – – 1.0 (0.4)
SZV-050N-000 109515 ½” NPT Body 1.59 (40.3) 3.58 (91.0) – – 1.0 (0.4)
SZV-075N-000 109516 ¾” NPT Body 2.02 (51.3) 4.18 (106.1) – – 1.0 (0.4)
SZV-100N-000 109517 1” NPT Body 2.24 (56.9) 4.44 (112.7) – – 1.0 (0.4)
SZV-000-4WE 109518 4 Wire Actuator w/ES – 0.4 (0.2)
Description
Snap Zone valves are precision engineered four wire thermoelectrically operated valves
designed for heating and cooling systems. The valve opens and closes based upon the
voltages applied to the actuator. Use the Bell & Gossett Snap Zone Valves to speed
installation time and reduce callback times to customers. The actuator can be installed
or removed at any angle on the adapter ring. The compact design and universality in the
actuator mounting position allows for easy installation in the most difcult positions.
Operating Data
Maximum Operating Temperature: 212°F (100°C)
Minimum Operating Temperature: 32°F (0°C)
Maximum Operating Pressure: 240 PSI
Maximum Differential Closeoff: 60 PSI
Open/Close Speed: 3 min.
Electrical Rating: 24V 60Hz
Power Consumption: 1.8W, 75mA (6 per 40VA)
End Switch Rating: 1.0A @ 24VAC
Materials of Construction
Body: Forged Brass
Bonnet/Packing Box: Brass
Plunger Assembly: Brass, EPDM Seals
Stem: Stainless Steel
Union Nuts: Brass
Tailpieces: Brass
O-Rings: EPDM
Actuator: Polyamide Housing
Cable: PVC
Model Number Naming Convention
SZV Snap Zone Valve
050 Body Size
050 = 0.500”
075 = 0.750”
100 – 1.000”
N Connection Type
S = Sweat Body
N = FNPT Threaded
4W Actuator Type
4W = 4 Wire
E End Switch
E = Endswitch
Snap Zone Size 1/2” 3/4” 1”
Cv 1.8 2.8 2.8
Cv Ratings