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HY28-2668-01/GC/NA,EU
GOLD CUP
®
Series - Application Manual
Piston Pumps & Motors
2.12
Parker Hannifin Corporation
Hydraulic Pump Division
Marysville, Ohio USA
Section 2
ITEM DESCRIPTION
1 Piston
pump
2 Vane
chambers
3 Rotary
servo
4
Servo and replenishing pump
5
Servo relief valve (modulated by operating pressure)
6
Replenishing relief valve
7
High pressure sequence valve
8
High pressure pilot control
9
Dual level relief valve (2)
10
Replenishing check valve (2)
PORT
CODE
CONNECTION FUNCTION
PORT SIZE OR THREAD
AG1,AG2
System gage
AG1 SAE-6 straight thread
( A-side )
AG2 SAE-8 straight thread
BG1,BG2
System gage
BG1 SAE-6 straight thread
( B-side)
BG2 SAE-8 straight thread
C
Auxiliary pumpsupply inlet
2” SAE 3000 psi 4-bolt flange
( Servo & Replen.)
DG
Case pressure gage
SAE-6 straight thread
D1,D2
Case drains
SAE-20 straight thread
G
Aux. pump (Servo & Replen.)
SAE-12 straight thread
Outlet to ext. filter
H1
Servo and Replenish
SAE-12 straignt thread
Inlet from servo filter
H2
Servo gage
SAE-6 straight thread
K
Optional-Replenishing
SAE-32 straight thread
Pump supply inlet
KG
Replenishing pressure gage
SAE-6 straight thread
FA
Control pressure gage, A side
SAE-6 straight thread
FB
Control pressure gage, B side
SAE-6 straight thread
V
Compensator vent, both sides
SAE-4 straight thread
VA
Compensator vent, A side
SAE-4 straight thread
VB
Compensator vent, B side
SAE-4 straight thread
NOMENCLATURE
(For ISO circuit Figure 2.4.1)
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