What Marelon Is

About Marelon®

Marelon Product Overview PDF

Marelon® is a proprietary formulation of polymer composite compounds using composite reinforced polymer and additives to produce a superior marine-grade product.

For use above and below the waterline
Precision molded plumbing systems
Complete freedom from corrosion
U.L. and A.B.Y.C. approved
Forespar "93" series valves and thru-hull fittings meet all design criteria and exceed all mechanical property requirements specified by the International Standards Organization

Marelon® Comparision Chart

	U.V. Degradation	Corrosion Resistance	Abrasion Resistance	Tensil Strength**	Flexural Modulus***	*ABYC Reg.**	*U.L. Reg.**	Total Score
MARELON®	10	10	10	10 (12,330 psi)	10 (522,135 psi)	10	10	70
NYLON	6	10	5	10 (11,750 psi)	5 (400,000 psi)	0	0	36
ACETAL	5	10	6	5 (10,000 psi)	5 (400,000 psi)	0	0	31
PVC	3	10	2	3 (2,378 psi)	3 (390,000 psi)	0	0	21
POLYPROPYLENE	8	10	7	2 (4,350 psi)	2 (205,000 psi)	0	0	29
BRONZE	10	4	10	10 (37,000 psi)	10 (16,700,000 psi⁴)	10	10	64
BRASS	10	0	10	10 (45,700 psi)	10 (15,200,000 psi⁴)	0	0	40

Marelon® is a registered trademark of Forespar Products Corp.

Minimum physical properties required for approval are:
Tensile strength 10,900psi / 75mPa
Flexural modulus 505,000psi / 3,480mPa
Value by test to ASTM D638 (American Society of Testing & Materials)
Value by test to ASTM D790 (American Society of Testing & Materials)
Value is elastic modulus for metals