NVCS SERIES
NVCS screwed end control valve is mainly use in the HVAC system to regulate the flow of water and steam in response to the demand of a controller.
PRODUCT FEATURE
Complete range from DN 15 to DN 50
2 Way and 3 Way Mixing or Diverting
Forged brass body
Low leakage factor of up to 0.05%
High close-off pressure actuator satisfies demanding requirements of high-rise buildings and high pressure pumping systems
PN 16 or 232 PSI system operating pressure
Actuator can be factory or field installed
Equal percentage flow characteristic
TECHNICAL SPECIFICATION
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HY-DF-SF05-24S(T) |
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VALVE BODY PRESSURE RATING |
232 psig (PN16 or 1,600 kPa) Meets requirements of ANSI B16.15,Class 250 |
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FLUID / AMBIENT TEMPERATURE LIMIT |
2 to 120°C water at an Ambient temperature of 40°C 2 to 180°C water / steam at an Ambient temperature of 40°C (With Cooling Fin) |
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SHIPPING & STORAGE TEMPERATURE LIMIT |
-40 to 70°C (-40 to 158°F) |
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BODY SIZE |
See TABLE 1: VALVE CODE NUMBER DESIGNATION |
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SERVICE |
Chilled, Hot Water and Steam, up to 50% Glycol Solutions |
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POWER SUPPLY |
24AC or 230 VAC ±10%, 50Hz |
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SEAT LEAKAGE |
0.05% |
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PIPE CONNECTION |
BSP |
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MAXIMUM CLOSE OFF PRESSURE |
See TABLE 3: FLOW RATE, KV FACTOR AND MAXIMUM CLOSE-OFF PRESSURE (KPA) 2-WAY AND 3-WAY ELECTRICALLY ACTUATED VALVE |
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BODY MATERIAL |
Brass |
Body |
Forged Brass |
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Stem |
Stainless Steel |
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Seat |
Stainless Steel |
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Seal |
PTFE |
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VALVE STROKE |
Brass |
DN 15 to 50 |
Max 20 mm |
TABLE 1: VALVE CODE NUMBER DESIGNATION
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VALVE BODY TYPE |
VB = NVCS Screwed Valve Body |
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CONFIGURATION |
2 = 2 - Way 3 = 3 - Way |
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VALVE SIZE |
015 = DN15 020 = DN20 025 = DN25 032 = DN32 040 = DN40 050 = DN50 |
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VALVE BODY |
B = Brass Body |
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PIPE CONNECTION |
B = BSP N = NPT |
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FLOW CHARACTERISTIC (FOR 3-WAY VALVE ONLY) |
M = Mixing (2 in, 1 out) D = Diverting (1 in, 2 out) |
To Order
Specify the code number from the Valve Code Number Selection Guide.
Repair Parts
Available repair parts for NVCS Series Valves include replacement valve bodies and replacement actuators.
No other field repairs should be attempted.
TABLE 2: DIMENSION OF VALVE BODY (mm)
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TRIM |
DN (mm) |
L |
H |
H1 |
H2 |
H3 |
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Brass |
20 |
80 |
170 |
21-31 |
15 |
40 |
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25 |
80 |
170 |
21-31 |
20 |
62 |
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32 |
120 |
186 |
21-31 |
20 |
62 |
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40 |
130 |
200 |
13-23 |
20 |
74 |
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50 |
145 |
211 |
13-23 |
20 |
77 |
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TABLE 3: FLOW RATE, KV FACTOR AND MAXIMUM CLOSE-OFF PRESSURE (KPA)2-WAY AND 3-WAY ELECTRICALLY ACTUATED VALVE |
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VALVE SIZE (mm) |
TRIM |
DN15/DN20 |
DN25 |
DN32 |
DN40 |
DN50 |
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FLOW RATE (KV) |
6.3 |
10 |
16 |
25 |
40 |
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VALVE STROKE (mm) |
Brass |
20 |
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STROKE TIME (sec) |
90 |
110 |
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MAXIMUM SHUTOFF PRESSURE (KPA) |
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MODEL F |
FORCE (N) |
DN15/DN20 |
DN25 |
DN32 |
DN40 |
DN50 |
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NAV... -- 10 |
1000 |
- |
- |
550 |
400 |
270 |
FLOW CHARACTERISTIC
APPLICATION OVERVIEW
The NVCS control valve feature Brass Body are available in 2-Way configurations with Push-Down-ToClose (PDTC - Normally open) with threaded BSP. The valve can be ordered with NENUTEC Valve Actuator NAV... and NTC controller for a complete HVAC solutions.
FAQ
Q1: What is your minimum order quantity (MOQ) for motorized valves?
MOQ depends on the model and customization requirements. For standard models, we usually support low MOQ to help new buyers start business.
Q2: What are the main types of damper actuators?
The main types include electric damper actuators, pneumatic damper actuators, spring return actuators, and non-spring return actuators. The right type depends on your HVAC project requirements and control system.
Q3. Are your damper actuators compatible with different control signals?
Yes. Our actuators support ON/OFF, floating point, modulating control (0–10V or 2–10V DC signals), making them suitable for most HVAC and building automation systems.
Q4. Can your damper actuators be used for fire and smoke dampers?
Yes. We supply actuators specifically designed for fire and smoke dampers, meeting international safety standards to ensure reliable operation during emergencies.
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