VG7842ET+72CHGC
Details
Details
VG7842ET+72CHGC 1/2 in. NPT 3-Way Mixing Globe Valve, 1.8 Cv, with VA7820-HGC-2 Spring Return (Stem Up) Proportional Actuator, Two Auxiliary Switches, 24 VAC
Springs back on power loss to close the inline (NC) port and open the lower (NO) port.
Takes on/off, floating, 0-10V, 2-10V, 0-20mA or 4-20mA control, chosen by switch settings.
Handles hot or chilled water up to 50% glycol to 284 deg F, or steam to 38 psi.
Key Features
- Cv: 1.8
- Trim: brass, linear flow
- Force: 180 lb
- Stroke time: 48 s
- Auxiliary switches: two SPDT
Product Specifications
| Manufacturer | Johnson Controls |
|---|---|
| Model | VG7842ET72CHGC (VG7842ET+72CHGC) |
| Valve | VG7842ET cast bronze globe valve, 3-way mixing |
| Size and connection | 1/2 in. (DN15) NPT |
| Cv | 1.8 (Kv 1.6) |
| Flow characteristic | Linear |
| Trim | Brass plug, brass seat against molded elastomeric disk; stainless steel stem; EPR packing |
| Valve stroke | 5/16 in. (8 mm) |
| Fluid temperature | 35 to 284 deg F (2 to 140 deg C) water; 38 psig saturated steam |
| Maximum allowable pressure | Water 400 psig to 150 deg F, 365 psig at 248 deg F; steam 35 psig at 284 deg F |
| Body rating | ANSI B16.15 Class 250 |
| Maximum recommended pressure drop | Water 35 psig; steam 15 psig |
| Rangeability | Greater than 100:1 |
| Leakage | 0.01% of maximum flow per ANSI/FCI 70-2, Class 4 |
| Valve ambient | 35 to 150 deg F |
| Actuator | VA7820-HGC-2 spring return (valve stem up), direct mount, brushless motor |
| Power | 24 VAC (19 to 30 VAC) at 50/60 Hz, Class 2 |
| Minimum transformer size | 11 VA |
| Control signal | 0 to 10 VDC, 2 to 10 VDC, 0 to 20 mA, or 4 to 20 mA, switch selectable; custom start 0 to 6 VDC, end 3 to 10 VDC; on/off or floating 24 VAC by switch setting; direct or reverse acting; factory set 0 to 10 VDC direct acting |
| Input impedance | Voltage 100k ohm; current 120 ohm |
| Feedback signal | 0 (2) to 10 VDC, matches input range |
| Auxiliary switches | Two SPDT, 230 VAC, 3.0 A resistive, 1/4 hp |
| Stroke time | 48 seconds (slow, factory setting) or 24 seconds (fast) for 5/16 in. stroke |
| Spring return direction | Valve stem up (actuator stem retracted) |
| Actuator force | 180 lb (800 N) minimum |
| Manual override | 5 mm Allen wrench |
| Electrical connections | 48 in. (1.2 m) UL 758 Type AWM halogen-free cable, 18 AWG |
| Mounting position | Upright or less than 90 deg from vertical for fluid to 212 deg F; stem horizontal with insulated pipe above 212 deg F |
| Actuator enclosure | NEMA 2 (IP54) |
| Cycles | 100,000 full stroke cycles |
| Actuator ambient operating | 23 to 131 deg F (-5 to 55 deg C), 10 to 90% RH noncondensing |
| Actuator dimensions | 9.6 x 4.56 x 8.35 in. (244 x 116 x 212 mm) |
| Actuator listings | UL 60730 Listed, CCN XAPX, File E194024; CE |