Controls & Instrumentation Product Manual - Spirax Sarco

Installation and Wiring
The valves should be installed in the horizontal line. Allow 6" for the
cover removal and 16" for complete actuator removal. These actuators
should never be mounted underneath the valve as condensation
can build up and result in a failure of the actuator. Full instructions are
supplied with the product.
Line
Volts
24 VAC Transformer
2 to 10 VDC (-)
Control Signal (+)
2 to 10 VDC (-)
Feedback Signal (+)
24 VAC Transformer
Line
Volts
4 to 20 mA (-)
Control Signal (+)
2 to 10 VDC (-)
Feedback Signal (+)
500
MFT typical 2 to 10 VDC or 4 to 20 mA wiring
Differential Pressures (psi)
Blk (1)
Red (2)
Wht (3)
Wht (5)
NVF24-MFT-US
NVF24-MFT-E-US
Blk (1)
Red (2)
Wht (3)
Wht (5)
NVF24-MFT-US
NVF24-MFT-E-US
Common -
+ Hot
Y 1 Input, 2 to 10V
U Output, 2 to 10V
Common -
+ Hot
Y 1 Input, 2 to 10V
U Output, 2 to 10V
Dimensions and Weights
Weight 4lb (1.8kg)
Dimensions See below
Note: Due to temperature capability limitations, maximum saturated steam inlet pressure is 50 psig. For reduced capacity valves, use the differential
pressures for the next valve size down.
B Series 2-Way and 3-Way Control Valves
ANSI/FCI 70-2 Class IV Shut-off (metal seated trim) for 2-way valves and Class III for 3-way valves
Model 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
NVF24-MFT-US 150 150 150 92 56 34
NVF24-MFT-E-US 150 150 150 92 56 34
NVG24-MFT-US 150 150 150 150 140 88
ANSI/FCI 70-2 Class VI Shut-off (PTFE soft-seated trim)
Model 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
NVF24-MFT-US 150 150 150 150 87 62
NVF24-MFT-E-US 150 150 150 150 87 62
NVG24-MFT-US 150 150 150 150 150 135
SPIRA-TROL L and K Series Control Valves
ANSI/FCI 70-2 Class IV Shut-off (metal seated trim)
Model 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
NVF24-MFT-US 288 206 109 91 13 -
NVF24-MFT-E-US 288 206 109 91 13 -
NVG24-MFT-US 725 661 414 327 115 72
SPIRA-TROL L and K Series Control Valves
ANSI/FCI 70-2 Class VI Shut-off (PTFE soft-seated trim)
Model 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"
NVF24-MFT-US 500 395 263 204 87 62
NVF24-MFT-E-US 500 395 263 204 87 62
NVG24-MFT-US 725 725 568 440 189 135
Spares
No spare parts are available for this actuator range
Spirax Sarco, Inc., 1150 Northpoint Blvd., Blythewood, SC 29016 • Phone: (803) 714-2000 • Fax: (803) 714-2222 TI-1-518-US 08.07
11.0" [279.4mm]
7.05" [179mm]
4.35" [110mm]
Control
Valves
Linear
Actuators
175