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14-B, Blow Down Valve-Ball Type for 47,247,67,70B Water Feeders
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$175.63 each
In Stock
Get 9 Tue, Jun 16
Order by today, receive Tuesday
MANUALS (2)
This item replaces: 14-B
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Free Shipping This item ships free
Easy Returns No restocking fee for 90 days
Product Highlights
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247 Series, 47 Series, 67 Series, 70B Series
4"
Description
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McDonnell & Miller 310447 (Model 14-B) Blow Down Valve - Ball Type (for Series 47/247/67/70B Water Feeders)
A ball-type blow down valve replacement used on compatible McDonnell & Miller boiler controls/water feeders to flush ("blow down") the control and support proper low-water protection operation.
Key Features:
Compatibility & Applications:
Installation & Operation Notes:
Maintenance & Troubleshooting:
User Reviews & Q&A Summary:
A ball-type blow down valve replacement used on compatible McDonnell & Miller boiler controls/water feeders to flush ("blow down") the control and support proper low-water protection operation.
Key Features:
- Ball-type blow down valve replacement (Model 14-B / part 310447)
- Full-ported ball action valve
- PTFE (Teflon) seats for bind-free, leak-tight ball movement
- Easy-open handle designed to keep hands away from hot water and steam
- Gasket and mounting screws included
- Maximum pressure: 30 psi
Compatibility & Applications:
- Listed for use with McDonnell & Miller Series 47, 247, 67, and 70B
- Manufacturer literature references applications for Series 47, 67, and 70/70B
- Must only be used where the manufacturer specifies this exact part number: 310447 (Model 14-B)
Installation & Operation Notes:
- Installation/service is intended for qualified personnel trained in the proper application, installation, and maintenance of steam/plumbing equipment
- Manufacturer safety/servicing guidance includes:
- Wear heat-resistant gloves when handling hot equipment/operating valves
- Allow the control and surrounding equipment to cool to 80°F (27°C) and allow pressure to release to 0 psi before servicing
- When blowing down, connect a drain pipe to avoid exposure to hot water/steam discharge
- Installation instructions include steps such as cleaning the gasket surface and orienting the handle so it can move through its full 90° range of motion
- Instructions reference connecting a 3/4" NPT blow down pipe to the control outlet
Maintenance & Troubleshooting:
- Manufacturer maintenance guidance includes:
- Blow down weekly when the boiler is in operation
- Disassemble and inspect annually, including inspecting/cleaning the float chamber and equalizing piping
- Replace the blow down valve every 10 years (more often in demanding water conditions or high make-up water applications)
- Manufacturer testing guidance indicates the burner should shut off during blow down; if the control does not blow down and/or the burner does not shut off, shut down the boiler and have the system inspected by qualified personnel
User Reviews & Q&A Summary:
- Reviews commonly describe it as an exact replacement that's easy to install, and many note it performs better/easier than older spring-style blow down valves
- Replacement reasons mentioned include leakage/corrosion on an older valve and keeping the low-water cut-off/control operating without replacing the entire unit
- One reviewer reported a packaging issue (only 3 of 4 attaching screws in the sealed package) and reused an old screw
- Q&A indicates the gasket is included
Specs
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| Application: | Replacement Part |
|---|---|
| Used With: | 247 Series 47 Series 67 Series 70B Series |
| Width: | 6.75" |
| Height: | 4" |
| Max Vessel Pressure: | 30 psi |
Questions?
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Product Reviews
4.95 out of 20 reviews
100% would recommend this product
5 star
95%
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Showing 1-10 of 20 reviews
I would purchase products from Supply House
I've purchased products from Supply House in the past and will continue to when dealing with my steam boiler, traps and components, whenever the need arises. They have about everything that I've needed and I can order it on one day and receive it the next day.
Paul
Finksburg, MD
3 years ago
Verified Buyer
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Shipped next day. Nice.
Easy install. Great directions.
Jim
Bellmore N.Y.
3 years ago
Verified Buyer
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Keeps low water cut off unit going
Cheaper than replacing the whole unit, and they seem to go quite a while before giving trouble.
The only issue I had was, there was only 3 of the 4 attaching screws in the sealed package. Luckily the old screws were in good shape to use one of them.
rwill
lansing mi
4 years ago
Verified Buyer
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this valve works 100 times better than the old spring style
the replacement valve showed up exactly on the day that was stated for delivery. Installation was a breeze. The hardest part was draining down the water level in boiler in order to replace old valve, once that was done it only took a few minutes to remove old spring valve and install new ball valve. Now it is easy to blow down boiler with out struggling with the spring valve anymore.
JEFF
PA
4 years ago
Verified Buyer
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Very please with the product
Old value ball leaked due to corrosion. Was older than 10 years. New value come with detailed instructions on removal of old value and installation of new value for myself a DIYer . I also liked that screws on new value tightened with hex wrench versus slotted screws on old value.
Jeff the I rather do it myself guy
18411
4 years ago
Verified Buyer
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Perfect replacement
Perfect replacement for my steam boiler.
Caseman
Northwest IA
5 years ago
Verified Buyer
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Better that driving to local supply house
An exact replacement on my steam boilers I have several of these boilers and it's nice to be able to quickly get the part I need at a competitive price
Billy
Hampton Nh
6 years ago
Verified Buyer
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Right product, quick shipping delivery
The description of the item was accurate, the product was in perfect condition and it arrived promptly.
Jonathan
CT, USA
6 years ago
Verified Buyer
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Right product fast and easy
I need a McDonald Miller blow down valve, web site was easy and had a good description of the product the price was right and simple shipping!
Davey
Grand Rapids
6 years ago
Verified Buyer
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Right product
Right product, good description fast and right price.
Facility Guy
49507
6 years ago
Verified Buyer
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Product Q&A
1 Question1 Question
Q: picture show this comes with a gasket so I would assume it does since its not included in the description?
Asked by Rebecca 11 years ago
Add your answer
Verified Reply- Supplyhouse StaffYes gasket included.
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