Forespar MF850 Marelon Ball Valves #:  24051
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Forespar MF850 Marelon Ball Valves

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Free Shipping This Item qualifies for Free Shipping on orders over $99! More Info...

Moulded from glass-reinforced Marelon with strength, lightweight and freedom from corrosion and electrolysis. With NPSM parallel pipe threads with diameters from 3/4" to 1-1/2".
More Details...   #24051
Brand:  Forespar
From:   CAD$64.95 to CAD$209.95 
MFG Part#:   905100

Forespar MF850 Marelon Ball Valves

The Forespar MF 850 series of Ball Valves are precision moulded with high strength glass-reinforced Marelon®.

Its non-corrosive proprietary formulation of polymer composite compounds uses resin and additives to produce a superior marine-grade product that will not deteriorate like traditional bronze marine plumbing parts.

Their great strength, lightweight, and complete freedom from corrosion and electrolysis make them the ideal valve for controlling inlet and outlet water requirements above and below the waterline.

Marelon®  Ball Valves use NPSM parallel thread forms that require thread compound or Teflon® tape to seal.

  • Meet and exceed all Marine U.L., ABYC and ISO standards
  • UV stabilized
  • Operating temperature range: -40° F to +176° (-40°C to +80°C)
NOTE: Industrial or household fittings typically use the NPT (National Pipe Tapered) tapered thread. The marine valves, thru-hulls, tailpipes and seacocks used in boats employ the NPSM (National Pipe Straight Mechanical) parallel thread form. Tapered industrial fittings are not intended to be joined with parallel marine fittings.

  Forespar MF850 Ball Valves

  Forespar Ball Valve Installation

  Forespar Marelon Understanding Thread Forms
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Q. Do you offer Free Shipping?
A. We have free ground shipping via UPS or Canada Post within Canada on most orders of $99 or more (pre-tax).

Q. What do you mean by most orders?
A. Some items are exempt from this offer and are indicated on the product page. Exempt items are usually bulky or heavy items such as buoys. Over 98% of the items on qualify for the free shipping offer.
To see what your shipping charge (if any) will be you can add the item(s) and quantities to the shopping cart and you will see a shipping cost calculator

Q. Where do you ship from?
A. We ship from Halifax, NS

Q. What is the delivery time?
A.  NS, NB, PE: 1 - 2 business days,
      ON, QC, NL: 2- 4 business days
      MB, SK, AB: 4-5 business days
      BC: 5-7 business days
When your order ships you will be emailed a tracking number which will give you the scheduled delivery date

Q. Do you offer Express Shipping?
A. Yes we can ship your order express. Please send an email and we will provide you with a quote (

Q. Do you require a signature on delivery?
A. We sometimes add a signature requirement especially if it is a high value package

Please Note:
Very Remote areas are exempt from Free Shipping offer. These are typically remote northern areas. Nunavut as well as many parts of the Yukon and NWT are exempt from free shipping

 1/2" Thread 
1/2" #: 24051 
MF 850 1/2" - Body Dia. 1-7/8" Body Length: 3" Length w Handle 4"
MFG Part#: #: 905100
Our Price:CAD$64.95 
Add to Cart
 3/4" Thread 
3/4" #: 24052 
MF 850 3/4"- Body Dia. 1-7/8" Body Length: 3" Length w Handle 4"
MFG Part#: #: 905101
Our Price:CAD$69.95 
Add to Cart
 1" Thread 
1" #: 24145 
MF 850 1"- Body Dia. 2-3/4" Body Length: 4-3/4" Length w Handle 5-1/2"
MFG Part#: #: 905102
Our Price:CAD$169.95 
Add to Cart
 1-1/4" Thread 
1-1/4" #: 24201 
MF 850 1-1/4"- Body Dia. 2-3/4" Body Length: 4-7/8" Length w Handle 5-3/4"
MFG Part#: #: 905103
Our Price:CAD$179.95 
Add to Cart
 1-1/2" Thread 
1-1/2" #: 24053 
MF 850 1-1/2"- Body Dia. 3-1/2" Body Length: 5" Length w Handle 7-1/2"
MFG Part#: #: 905104
Our Price:CAD$209.95 
Add to Cart
Money Back Guarantee
Guarantee You may return your purchase to us (with a return authorization number - use this form) within 30 days and we will refund the purchase price of the product. Items which are cut to order (rope, wire etc), software, chart cards and printed materials (paper charts, books) are not returnable.

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