Graco 77X540 Parts, Technical Data, Accessories, Part No. Description

Parts

Ref	Description	Qty
1	MANIFOLD, electric vent valve	1
2	VALVE, cartridge, 24VDC	1
3	VALVE, pressure relief, 3500 psi	1
4	SCREW, cap, socket, M8 x 1.25	3
8	O-RING	2
9	PLUG, pipe, 1/8 in. npt	1
10	PLUG, 1/4 in. npt	1

Accessories

Part No. Description

24N402 CABLE, 6 ft, vent valve, 2 pin for vent valve control

77X529 CABLE, power injector system only. Use with 77X528

77X528 CABLE, power extension, 15 ft (4.6m), use with 77X529

Parts

2

9

8

1

10

3

4

Technical Data

.

Vent Valve for Dyna-Star HP

	US	Metric
Maximum working pressure*	3500 psi	24.1 MPa, 241 bar
Inlet/Outlet Sizes
Outlet (marked “0”)	3/8 in. npt(f)
Inlet (refill - marked “1”)	3/8 in. npt(f)
Pressure Relief Valve
Factory Set Pressure	4000 psi + 250 psi	27 MPa, 275 bar + 10%
Reset Pressure	80% of set pressure
Relief Rate**	0.1 gallons/minute @3500 psi	0.4 liters/minute @24.1 MPa. 241 bar
Solenoid Valve
Flow**	Up to gpm 0.2 gallons/minute,	0.65 liters/minute
	40 in3/minute
Wetted materials	Zinc plated steel, carbon steel, aluminum, fluoroelastomer, polyurethane
Weight	4.0 lbs	1.8 kg
IP Rating	IP65K
Solenoid Coil	Resistance (DC) (Ohms) @ 68°F (20°C)	Initial Current Draw (Amps)
24 VDC	28.8	0.83

*Dyna-Star HP Pump Models are rated for 5000 psi (34.47 MPa, 344 bar) maximum working pressure, however, when a vent valve is installed on the HP Pump, the maximum working pressure must be reduced to 3500 psi (24.1 MPa, 241 bar).

**Flow capability depends on viscosity, type of fluid, temperature, etc.

332519F 5