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FlushPro Valve and Winterizing Kit
TM

TM
FlushPro Marine Engine Flushing and Winterizing Valve - Flush your boat engine safely and easily
Freshwater Flushing of Your Inboard is as Simple as Connecting a Garden Hose
Material: Polycarbonate, with Stainless Steel Spring
Finish: Clear
For Hose Sizes: 5/8”, 1” or 1-1/4”
Features: • Transparent body allows for visual inspection of water flow
• Durable check valve system activated by water pressure
from a garden hose
• Check valve automatically shuts off hull intake when water
pressure is applied
• Adapter supplied with FlushPro™ makes winterizing your
boat easy
• Can be used with onboard generators

Hose Size OEM
Finish “A” Dimension Retail Pkg. Bulk Pkg.
Valve 5/8 0456DP4 0456004
Valve 1 0456DP6 0456006
Valve 1-1/4 0456DP7 0456007
Valve & Kit 5/8 0457DP4 0457004
Valve & Kit 1 0457DP6 0457006 Fig. 0456
Valve & Kit 1-1/4 0457DP7 0457007

6
Small Check
“A” Dimension = Valve
5/8” Garden Hose Connection
1” or
1-1/4” Reinforcing
Body Clamp
Main Check
Valve
1-3/4”
4-3/4”
FLOW FLOW Underwater Hardware
3”
A
Sea Water 5” To
Inlet Side 7-7/8” Engine
Side

FIG. 0456 - DIFFERENTIAL PRESSURE GRAPH FlushPro Marine Engine Flushing & Winterizing Kit
TM
Kit includes:
20"
tm
19" • FlushPro Valve with Two Clamps
P 18" • Hose Fittings & Clamps
r 17"
e 16" • 7’ of Hose
s 15" • Fig. 0499 Water Inlet Fitting
s 14"
u 13"
r
12"
e
11" Fig. 0457

10"
D
9"
r
o 8"
p 7"
6"
7 Feet
5"
(Hg)
4" of Hose
3"
2"
1"
10 20 30 40 50 60 70
Flow GPM
Visit www.perko.com for installation instructions and technical drawings on most PERKO products. 87
®