QUICK DUMP VALVE CATALOG
Quick Dump Valve
Table of Contents
Gilmore has manufactured a caliber of excellence in producing authentic dump valves that are used to enable quick dumping of a pilot, cylinder, or circuit function volume. The dump valve vent port bypasses a restrictive control system vent circuit to protect other system components. GEN2 Quick Dump | Seat O-Ring The newly improved Gilmore Quick Dump Valve features Nitronic 60 Spool with self-centering seat geometry and O-Ring seal for quick dumping of a pilot, cylinder, or circuit function volume. Available in 1/2” NPT and 1/2” SAE configurations.
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Quick Dump Valve
Reference Sheet
3. 6.
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Figure 1: GEN2 Quick Dump Valve (Cross Section)
Gilmore’s line of GEN2 1/2” Quick Dump Valves are used to enable quick dumping of cyclinder, pilot or circuit function volume. The 1/2” Quick Dump Valve vent port will bypass a restrictive upstream control system vent circuit. 1. Field Repairable - With the addition of an O-Ring to the seat, the quick dump allows the valve to be field repairable. 2. Self Centering Seat - The need to coin each valve has been eliminated due to the addition of the blended radius seat. 3. Footprint - The new Gilmore dump valve fits the same footprint as the Gilmore legacy 1/2” Quick Dump valve. 4. Self Centering Spool - The Nitronic 60, self centering spool, allows for inproved cycle life and actuation. 5. Forward Flow - In forward flow, the supply will communicate directly with the function through the spool shift while simultaneously blocking the vent port. 6. Reverse Flow - When the function ratio is achevied, the spool shift function pressure communicates with the vent port. 7. Function Ratio - At a ratio of 1:2 of supply pressure to function pressure, the amount of pressure required for the supply pressure drops.
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GEN2 Quick Dump Valve
Technical Sheet 1/2” NPT, and 1/2” SAE Seat O-Ring
FUNCTIONAL DESIGN SPECIFICATION Maximum Allowable Working Pressure
5000 PSI
Poppet Cracking Pressure
80 +/- 20 PSI
Minimum Recommended Working Pressure
1500 PSI
Recommended Maximum Operating Flow
20 GPM Forward / 40 GPM Reverse
Acceptable Leakage Rate
4 drops per minute
Flow Coefficent (Cv)
.8 forward, 2.8 reverse
Hydrostatic Proof Pressure
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7500 PSI
Predicted Life Cycle S
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Available Configurations: 1/2” NPT, and 1/2” SAE connections In/Out
2500 Cycles
Operating Temperature Range
32 ˚F to 150 ˚F
Storage Temperature Range
32 ˚F to 150 ˚F
Acceptable Operating Fluid Types
waterbased hyd fluid
Mounting Restrictions
none
US Patent
6,779,543
Maximum Operating Depth
12,000 ft
Function Ratio
1:2
BILL OF MATERIALS
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Item Number*
Description
1
BODY, 1/2” SHUTTLE
2
ADAPTER 1/2”
A276 TP S21800 (NITRONIC 60)
3
ADAPTER, SHUTTLE 1/2”
A276 TP S21800 (NITRONIC 60)
4
BACKUP RING
ARLON 1160
5
MOUNTING PLATE
A240 TP 304
6
SPOOL, RADIUS SEAT
Continued on page 4.1
Material A276 TP 316
A276 TP S21800 (NITRONIC 60)
GEN2 Quick Dump Valve
Technical Sheet 1/2” NPT, and 1/2” SAE Seat O-Ring
BILL OF MATERIALS (CONT.) Item Number*
Description
Material
7
POPPET, 1/2” QUICK DUMP , 30° SEAT
A276 TP S21800 (NITRONIC 60)
8
SEAT, O-RING
A276 TP S21800 (NITRONIC 60)
9
SPRING COMPRESSION
10
O-RING, (ITEM* 10-12)
Part Numbers
Description
29010
Valve, Quick Dump, 1/2” NPTF, Seat O-Ring
29011
Valve, Quick Dump, 1/2” SAE, Seat O-Ring
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Available Configurations: 1/2” NPT, and 1/2” SAE connections In/Out
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**The repair kit part number will match the category part numbers with (-RK) at the end.
ELGILOY HNBR
Gilmore 1231 Lumpkin Road Houston, TX 77043 +1 713 468 8778
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