Page 125 - Parker - Quick Coupling Products

ST Series
Hydraulic Quick Couplings Straight-through Interface
High Flow Non-valved, manual sleeve

ST Series non-valved couplings provide maximum flow and
low pressure drop. The smooth, open bore allows easy
cleaning in applications where the same lines are used for
more than one media.
Features
• Steel nipples are case hardened for resistance to Brinelling

• Functionally interchanges with similar straight-through
design couplings
B Hydraulics • Material options available
• Standard Nitrile seals
• Sleeve-Lok option available

Applications:
• High pressure water
• Steam washers

• Carpet cleaners

Specifications

Body Rated Pressure (psi) Rated Pressure (psi) Rated Pressure (psi) Temperature Range Rated Flow
Size Brass Coupler/Nipple Brass Coupler/Steel Nipple 303 SS Coupler/Nipple (standard seals)
1/8 2500 2600 4200 3
1/4 5200 5500 6700 6
3/8 2700 3500 5500 12
1/2 2200 2700 3000 12
-40º to +250º F
3/4 1700 2700 3000 28
1 1200 2000 1700 50
1-1/4 1700 – – 76
1-1/2 1400 – – 100

Performance ST Series (1/8", 1/4", 3/8", 1/2") ST Series (3/4", 1", 1-1/4")
Test Fluid: Oil - 150 SUS Test Fluid: Oil - 150 SUS
12
5
10 1"
1/8" 4
Pressure Drop in PSID 6 4 3/8" 1/2" Pressure Drop in PSID 3 2 3/4" 1-1/4"
8

2 1/4" 1

0 0
0 2 4 6 8 10 12 14 16 18 0 20 40 60 80 100
Flow in USGPM Flow in USGPM

B-78 Parker Hannifin Corporation
Quick Coupling Division
Minneapolis, MN
www.parker.com/quickcouplings