Forespar 253 Series Marelon Mushroom Head Thru-Hull Fitting - 1"
906026

Click Here to See More Information about Forespar Marelon Plumbing Products
Features:
- Forespar Marelon® mushroom head thru-hull with hose barb connection
- Suitable for use 6 inches or more above the waterline
- Less than 6" requires a seacock
- Marelon fittings are popular with many top quality boat builders worldwide
- Marelon® is a proprietary formulation of polymer composite compounds using composite reinforced polymer and additives to produce a superior marine-grade product
- Designed for use above and below the waterline
- Complete freedom from corrosion
- High strength
- UV Stabilized
- Will not freeze or become brittle with age or temperature extremes
- U.L. and A.B.Y.C. approved
- Marelon fittings can be installed using the same techniques and materials as bronze fittings
Specifications:
- Thread: 1"
- Hose ID: 1" (25.4 mm)
- Operating temperature: -40° to +176° Fahrenheit
- Dimensions:
- A = 2.350" (59.69 mm)
- B = .958" (24.33 mm)
- C = .295" (7.49 mm)
- D = 1.695" (43.05 mm)
- E = 1.085" (27.55 mm)
- F = .797" (20.24 mm)
- G = 1.015" (25.78 mm)
- H = 1.280" (32.51 mm)
Marelon® Comparison Chart - Click Here to See More Information about Marelon
U.V. Degradation
Corrosion Resistance
Abrasion Resistance
Tensile Strength**
Flexural Modulus***
ABYC* Reg.
U.L.* Reg.
Total Score
MARELON®
10
10
10
10 (27,000 psi)
10 (1,300,000 mPa)
10
10
70
NYLON
6
10
5
10 (12,000 psi)
4 (410,000 mPa)
0
0
35
ACETAL
5
10
6
5 (10,000 psi)
5 (450,000 mPa)
0
0
31
PVC
3
10
2
3 (5,015 psi)
3 (434,000 mPa)
0
0
21
POLYPRO-PYLENE
8
10
7
2 (4,150 psi)
2 (75,000 mPa)
10
10
29
BRONZE
10
4
10
10 (35,000 psi)
10 (15,000,000 mPa)
10
10
64
BRASS
10
0
10
10 (45,000 psi)
10 (11,000.00 mPa)
0
0
40
Marelon® is a registered trademark of Forespar Products Corp.
* Minimum Physical Properties Required for Approval are:
- Tensile Strength 10,900 psi / 75 mPa
- Flexural Modulus 500,000 psi / 3480 mPa
** Value by test to ASTM D638 (American Society of Testing & Materials)
*** Value by test to ASTM D790 (American Society of Testing & Materials)
General Note: Forespar threaded plumbing fittings (like most true marine plumbing fittings) use NPSM Threads - National Standard Free-Fitting Straight Mechanical Pipe Thread. NPT - National Pipe Threads are tapered, NPSM Threads are parallel. The two types are not designed to work together.