Star Marine Depot stocks marine check valves. What is a check valve? Check valves may be used in fuel or water systems to help keep pumps in prime condition and to prevent back-flow in pressure systems. The unique design of our bronze in-line Graco valve types helps to reduce flow turbulence and restriction to improve pump performance.

Shop Check Valves Products

Groco 1/2 Bronze In-Line Check Valve
Star Price$15.95
Groco Check Valve Bronze In-Line 1/2"
MFG: CV50

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV50
Star Price$15.95
Groco Check Valve Bronze In-Line 3/4"
Star Price$17.95
Groco Check Valve Bronze In-Line 3/4"
MFG: CV75

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV75
Star Price$17.95
Groco Check Valve Bronze In-Line 1"
Star Price$22.95
Groco Check Valve Bronze In-Line 1"
MFG: CV100

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV100
Star Price$22.95
Groco Check Valve Bronze In-Line 1 1/4"
Star Price$38.95
Groco Check Valve Bronze In-Line 1 1/4"
MFG: CV125

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV125
Star Price$38.95
Groco Check Valve Bronze In-Line 1 1/2"
Star Price$56.95
Groco Check Valve Bronze In-Line 1 1/2"
MFG: CV150

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV150
Star Price$56.95
Groco Check Valve Bronze In-Line 2"
Star Price$85.95
Groco Check Valve Bronze In-Line 2"
MFG: CV200

CV Series in-line check valve may be used in water or fuel systems to keep pumps primed and to prevent back-flow in …

MFG: CV200
Star Price$85.95
Whale Inline Non-Return Valve 1 1/2
Star Price$14.95
Whale Inline Non-Return Valve 1 1/2
MFG: LV1215
Simple way to maintain prime in a suction or discharge line. Designed to fit in-line. Use with manual or electric pumps.
MFG: LV1215
Star Price$14.95
Whale Inline Non-Return Valve 3/4
Star Price$13.95
Whale Inline Non-Return Valve 3/4
MFG: LV1219
Simple way to maintain prime in a suction or discharge line. Designed to fit in-line. Use with manual or electric pumps.
MFG: LV1219
Star Price$13.95
Perko Flush Pro Valve-Engine Flush Check Valve
Star Price$70.95
Perko 5/8" Flush Pro Valve
MFG: 0456DP4
Flush Pro Valve - 5/8"

Finally! Fresh flushing of your inboard is as simple as connecting a garden …
MFG: 0456DP4
Star Price$70.95
Perko Check Valve-Flush Pro Valve
Star Price$69.95
Perko 1" Flush Pro Valve
MFG: 0456DP6
Flush Pro Valve - 1"

Finally! Freshwater flushing of your inboard is as simple as connecting a garden …
MFG: 0456DP6
Star Price$69.95
Perko Flush Pro Valve-Check Valve
Star Price$69.95
Perko 1-1/4" Flush Pro Valve
MFG: 0456DP7
Flush Pro Valve 1-1/4"

Finally! Freshwater flushing of your inboard is as simple as connecting a …
MFG: 0456DP7
Star Price$69.95
Perko Flush Pro Valve Check Valve Kit
Star Price$116.95
Perko 5/8" Flush Pro Valve Kit
MFG: 0457DP4

Flush Pro Valve Kit - 5/8"

Finally! Freshwater flushing of your inboard is as simple as …

MFG: 0457DP4
Star Price$116.95
Perko 1" Check Valve Flush Pro Valve Kit
Star Price$116.95
Perko 1" Flush Pro Valve Kit
MFG: 0457DP6

Flush Pro Valve Kit - 1"

Finally! Freshwater flushing of your inboard is as simple as …

MFG: 0457DP6
Star Price$116.95
Perko Check Valve Flush Pro Valve Kit 1-1/4"
Star Price$116.95
Perko 1-1/4" Check Valve Flush Pro Valve Kit
MFG: 0457DP7

Flush Pro Valve Kit - 1-1/4"

Finally! Freshwater flushing of your inboard is as simple as …

MFG: 0457DP7
Star Price$116.95