Magnatrol standard BRONZE SOLENOID VALVE TYPE "GR" FULL PORT
BRONZE SOLENOID VALVE TYPE "GR" FULL PORT
NORMALLY OPEN - 1" TO 3" PIPE SIZE
NO DIFFERENTIAL PRESSURE REQUIRED TO OPEN
OPERATION:
Valve closes when energized and opens when de-energized. When the coil is energized the plunger presses the poppet, closing the pilot orifice, and opens a bleed passageway to permit pressure to build above the piston and seat it. Upon de-energizing the coil, the pilot orifice is opened, relieving the pressure above the piston allowing it to leave its seat. The bottom spring allows the valve to operate at zero pressure drop.
CONSTRUCTION: (* Wetted parts)
*Valve Body - Cast Bronze, Globe Pattern - NPT ends
*Piston - Bronze
Coil Enclosure - Malleable or Cast Iron, 1/2” NPS conduit conn.
*Plunger - 430 Stainless Steel
*Pilot Valve Stem - 303 Stainless Steel
*Pilot Valve Disc Holder - Brass
*Pilot Valve Seal - Buna N (Viton available)
*Bonnet Tube - 304 Stainless Steel
*Spring - 302 Stainless Steel
*Body Seal - Buna N or Non Asbestos Gasket
*Orifice Seal - Buna N (Viton or Glass Filled Teflon available)
*AC Shading Coil - Copper
*Stem Pin - 304 Stainless Steel
Coil - Encapsulated Class B, 18” leads - (Class H available)
APPLICATION:
To control the flow of Water, Air, Gas, Solvents, Vacuum and any other fluids not reactive with construction materials and free of sediment. Buna N seating of the pilot and main orifices make the valves ideal for TIGHT SEATING, LOW PRESSURE and LOW FLOW conditions. Valve operates from zero to maximum differential pressure indicated in table. Valve must be mounted in horizontal pipe with solenoid enclosure vertical and on top.
| Pipe | Max. | Type No. | Watts | Amps | Amps Inrush | Watts | Ship |
| Size | Diff. | AC | Hold | 120-60 | DC | Wt. | |
| Inches | PSI | 120-60 | Lbs. | ||||
| 1" | 20 | † 18GR24 | 25 | 0.5 | 1.5 | 18 | 9 |
| 35 | 33GR24 | 45 | 1 | 3 | 23 | 13 | |
| 1 1/4" | 20 | † 18GR25 | 25 | 0.5 | 1.9 | 18 | 10 |
| 35 | 33GR25 | 45 | 1 | 3.2 | 23 | 14 | |
| 1 1/2" | 15 | † 18GR26 | 25 | 0.5 | 2 | 18 | 12 |
| 25 | 33GR26 | 45 | 1 | 3.8 | 23 | 16 | |
| 2" | 18 | 33GR27 | 45 | 1 | 4.2 | 23 | 21 |
| 30 | 133GR27 | 65 | 1.5 | 4.5 | 33 | 21 | |
| 2 1/2" | 25 | 43GR28 | 60 | 1.7 | 8 | 35 | 39 |
| 3 | 25 | 44GR29 | 60 | 1.7 | 8.8 | 35 | 47 |
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