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9DM2, 3/4" Brass Dual Check Valve with Intermediate Atmospheric Vent
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$179.50 each
In Stock
Get 18 Thu, Jun 25
Order by today, receive Thursday
MANUALS (2)
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Easy Returns No restocking fee for 90 days
Product Highlights
–
3/4"
Brass
175 MAX PSI
FNPT x FNPT Connection
250°F Max Temp
2-9/16"
Description
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Note: Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.
Series 9D Dual Check Valves with Intermediate Atmospheric Vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply. It consists of a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves. Series 9D is designed for continuous pressure, non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. Minimum Working Pressure: 25psi (172kPa), Maximum Working Pressure: 175psi (12.1 bar).
Features:True line-sized construction allows the check modules to open further allowing dirt and debris to pass more freely
reducing check fouling
Stainless steel internal parts
Maximum flow at low pressure drop
Furnished with union connections to facilitate removal and replacement for maintenance
Compact for economy combined with performance
Design simplicity for easy maintenance
Can be installed vertically or horizontally
Series 9D Dual Check Valves with Intermediate Atmospheric Vent prevent the reverse flow of hot or cold polluted water from entering into the potable water supply. It consists of a brass body with stainless steel internal parts, integral strainer, and two durable, tight-sealing, rubber check valves. Series 9D is designed for continuous pressure, non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. Minimum Working Pressure: 25psi (172kPa), Maximum Working Pressure: 175psi (12.1 bar).
Features:
Specs
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| Application: | Plumbing |
|---|---|
| Size: | 3/4" |
| Material: | Brass |
| Max Pressure (PSI): | 175 |
| Max Temp (F): | 250°F |
| Height: | 2-9/16" |
| Width (Inches): | 4-1/2" |
| Connection Type: | FNPT x FNPT |
| Connection Method: | Threaded |
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3/4"
175
FNPT x FNPT
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Product Reviews
5 out of 9 reviews
100% would recommend this product
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Showing 1-9 of 9 reviews
Perfect replacement
Replaced a leaking 21 year old unit that served the boiler well. New unit arrived quickly and was swapped in without issue. Supply House is my go-to for great prices and fast delivery for all my boiler and domestic water system requirement.
NTDEFEO
Hazlet Twp.
4 years ago
Verified Buyer
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I would but this product again
Use this dual check valve to prevent backflow on a pool auto-fill water supply line.
Kirk
Deerfield Beach, FL
5 years ago
Verified Buyer
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Fast and easy
Awesome
Ghost
Connecticut
7 years ago
Verified Buyer
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no
Great Service and product quality
Vlad
MA
8 years ago
Verified Buyer
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Fit perfectly
Supply House is great and I will continue to but from them.
Rtrask
Denver CO
9 years ago
Verified Buyer
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Great Value Buy
I used this as a replacement part for some old check valves. Worked like a typical "back flow preventer". Would recommend using pipe dope over the white or blue teflon tape. Tried it with the tape first, and didn't want to over tighten and crack the thin walled fittings and had a very small leak. Used pipe dope and sealed it right up.
Poper
Mankato, MN
9 years ago
Verified Buyer
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vented dual check valve1
Perfect size of old valve, very easy to replace old one,
glw
lake havasu city arizona
10 years ago
Verified Buyer
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Essential
Essential for safe operation of a boiler system connected to a potable water supply. I'm not an HVAC contractor, but I am an engineer by training and career and I've been learning about hydronic heating systems through a number of books. I noticed that my system only has a pressure reducer on the make-up supply. It definitely should have a backflow preventer as well! The so-called "professionals" who installed the system apparently didn't feel the need for this essential safety device. This is cheap insurance for your family's health.
kichigaisensei
Chicago, IL
11 years ago
Verified Buyer
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Awesome product
Awesome product. Very easy and fast to install. Would definitely by this product again and would also buy from Supply House over and over again. Got here fast and installed easy.
Big Dawg
Polson, Mt
12 years ago
Verified Buyer
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