EP400-250+GRX-E N4
Details
Details
EP400-250+GRX-E N4 4 in. Electronic Pressure Independent Valve (ePIV), ANSI Class 250 Flanged, 330 GPM, Non-Spring Return, 24 VAC/DC, NEMA 4
Holds the set flow as system pressure changes, within its 5 to 50 psi differential pressure range, and measures flow and fluid temperature with a built-in ultrasonic flow meter. Handles chilled or hot water up to 60% glycol; does not suit cooling tower water, domestic water or steam. Has a NEMA 4 actuator housing. Has ANSI Class 250 raised-face flanges.
Key Features
- Max flow: 330 GPM
- Close-off: 310 psi
- Differential pressure range: 5 to 50 psi
- Control: 2-10 VDC, 2-10 VDC feedback
- Communication: BACnet MS/TP, Modbus RTU, MP-Bus
Product Specifications
| Manufacturer | Belimo |
|---|---|
| Model | EP400250GRXEN4 (EP400-250+GRX-E N4) |
| Valve size | 4" (100) |
| Max flow (V'nom) | 330 GPM |
| Body Pressure Rating | ANSI Class 250 |
| Nominal voltage | AC/DC 24 V |
| Nominal voltage frequency | 50/60 Hz |
| Nominal voltage range | AC 19.2 to 28.8 V / DC 21.6 to 28.8 V |
| Power consumption in operation | 5.1 W |
| Power consumption in rest position | 2.6 W |
| Transformer sizing | 9.2 VA |
| Connection supply/control | Cable 3 ft. (1 m), 6 x 0.75 mm2 |
| Conductors, cables | Power supply AC/DC 24 V: cable length <100 m |
| Electrical connection | 18 AWG plenum cable |
| Communicative control | BACnet MS/TP Modbus RTU MP-Bus |
| Operating range Y | 2 to 10 V |
| Operating range Y variable | 0.5 to 10 V |
| Operating range Y note | 4 to 20 mA w/ ZG-R01 (500 ohm, 1/4 W resistor) |
| Input impedance | 100 k ohm (0.1 mA), 500 ohm |
| Operating modes optional | VDC variable |
| Position feedback U | 2 to 10 V |
| Position feedback U note | Max. 1 mA |
| Position feedback U variable | VDC variable |
| Setting fail-safe position | FC/FO or adjustable 0 to 100% (POP rotary knob) |
| Position indication | electronic throughout 0 to 90 deg rotation |
| Running Time (Motor) | 90 s |
| Running time fail-safe | <35 s |
| Sound power level motor | 45 dB(A) |
| V'max adjustable | 25 to 100% of V'nom |
| Control accuracy | +/-5% (of 25 to 100% V'nom) |
| Control accuracy note | +/-10% (of 25 to 100% V'nom) @ Glycol 0 to 60% vol. |
| Min. controllable flow | 1% of V'nom |
| Configuration | via Belimo Assistant 2 |
| Fluid | chilled or hot water, up to 60% glycol max (open loop/steam not allowed) |
| Fluid temperature | 14 to 250 deg F (-10 to 120 deg C) |
| Close-off pressure | 310 psi |
| Differential pressure | 5 to 50 psi 1 to 50 psi, see "Flow Reduction Chart" |
| Flow characteristic | equal percentage or linear |
| Leakage rate | 0% leakage |
| Pipe connection | Flange |
| Installation orientation | upright to horizontal (in relation to the spindle) |
| Servicing | maintenance-free |
| Manual override | external push button |
| Inlet Length to Meet Specified Measurement | >= to 5 x DN (according to EN 1434-4:2022) |
| Measured values | Flow Fluid temperature in the valve unit |
| Temperature sensor | Pt1000 - EN 60751, 2-wire technology, inseparably connected integrated in flow sensor |
| Measuring accuracy absolute temperature | +/-1.1 deg F @ 50 deg F (+/-0.6 deg C @ 10 deg C) (Pt1000 EN60751 Class C) +/-1.35 deg F @ 140 deg F (+/-0.75 deg C @ 60 deg C) (Pt1000 EN60751 Class C) |
| Measuring principle | Ultrasonic flow measurement |
| Measuring accuracy flow | +/-2% |
| Min. flow measurement | 0.2% of V'nom |
| Measurement repeatability | +/-0.5% (Flow) |
| Sensor technology | Ultrasonic with glycol and temperature compensation |
| Degree of protection NEMA/UL | NEMA 4 |
| Housing | UL Enclosure Type 4 |
| Pressure equipment directive | CE according to 2014/68/EU |
| Quality Standard | ISO 9001 |
| UL 2043 Compliant | Suitable for use in air plenums per Section 300.22(C) of the NEC and Section 602 of the IMC |
| Rated impulse voltage supply | 0.8 kV |
| Ambient humidity | Max. 95% RH, non-condensing |
| Ambient temperature | -22 to 122 deg F (-30 to 50 deg C) |
| Storage temperature | -40 to 176 deg F (-40 to 80 deg C) |
| Valve body | Ductile cast iron GGG 40.3 |
| Body finish | with protective paint |
| Flow measuring pipe | Ductile cast iron - GGG 40.3 |
| Closing element | Stainless steel |
| Stem | stainless steel |
| Stem seal | EPDM (lubricated) |
| Seat | PTFE |
| Characterized disc | TEFZEL |
| O-ring | EPDM (lubricated) |
| Ball | stainless steel |
Product Resources
- EP400-250 GRX-E N4 Data Sheet (PDF)
- Installation Instructions (PDF)
- Belimo Assistant 2 (free): iPhone/iPad, Android