Stainless Steel Scupper Valves

Each Thru-Hull and Scupper Valve is available with a new silicone gasket and are backed by Attwood's trusted Lifetime Warranty! Why specify plastic parts when these fittings will last the life of the boat. The Scupper Flap is tough neoprene ruber with a molded V that fits into the grooved body to reduce back wash. Fastners are concealed and corrosion-proof.

Rugged Stainless Construction

Cast from certified enhanced #316 Stainless Steel allow for strength and lifetime corrosion-resistance.
We polish all visible areas to a mirror finish, then each part through a passivation for additional protection
Thick steel sidewalls withstand continual stress and hose flexing

Solid Solicone Gasket

Gasket is dimensionally stable--will not deteriorate or shrink over time
Excellent resistance to UV & weather-aging
Watertight, fool-proof, one-piece seal
Eliminates the need to form and apply sealant or caulk

Caution: Thru-Hull connectors are designed for installation above the water line only.

Lifetime Warranty

A Hose Size	B Flange	C Thread O.D.	D Thread Length	E Barb Length	F Total Length	Install. Hole Saw Size	Thread NPSM	Max Hull Thick.	Bulk Without Gasket	Bulk With Gasket	Aftermarket Packaging*
Threaded
-	1-7/8"	3"	3-1/2"	-	3-7/8"	2"	1-1/2"	3"	66565-1	66565G1	-
-	2-23/64"	3-5/8"	2-1/2"	-	2-7/8"	2-1/2"	2"	2"	66567-1	66567G1	-
Barbed
1-1/2" I.D.	1-7/8"	3"	3-1/2"	1-1/2"	5-1/2"	2"	1-1/2"	3"	66553-1	66553G1	66553-3
2" I.D.	2-23/64"	3-5/8"	2-1/2"	1-5/16"	4-1/2"	2-1/2"	2"	2"	66555-1	66555G1	-
1-1/2" I.D.	1-7/8"	3"	2-1/4"	1-1/2"	4-1/2"	2"	1-1/2"	1-3/4"	66557-1	66557G1	-

A Hose Size

B Flange

C Thread O.D.

D Thread Length

E Barb Length

F Total Length

Install. Hole Saw Size

Thread NPSM

Max Hull Thick.

Bulk Without Gasket

Bulk With Gasket

Aftermarket Packaging*

Threaded

1-7/8"

3-1/2"

3-7/8"

1-1/2"

66565-1

66565G1

2-23/64"

3-5/8"

2-1/2"

2-7/8"

2-1/2"

66567-1

66567G1

Barbed

1-1/2" I.D.

1-7/8"

3-1/2"

1-1/2"

5-1/2"

1-1/2"

66553-1

66553G1

66553-3

2" I.D.

2-23/64"

3-5/8"

2-1/2"

1-5/16"

4-1/2"

2-1/2"

66555-1

66555G1

1-1/2" I.D.

1-7/8"

2-1/4"

1-1/2"

4-1/2"

1-1/2"

1-3/4"

66557-1

66557G1

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attwood | 1016 n. monroe st. | lowell, mi 49331 | 616.897.9241 | Web Development by Bevelwise