WATTS 0858536 Asmi Cast Iron Air Separator 1/4

( Brand: Watts ), ( Item Length: 4 In ), ( Item Width: 14 In ), ( Manufacturer Part Number: 0858536 )

Review WATTS New 1/4 Inch Asmi Cast Iron Air Separator

The Watts 0858536 1/4 ASMI Cast Iron Air Separator is a high-performance, cast iron water heater accessory designed to improve the efficiency and longevity of your water heating system. This separator effectively removes air from the water supply line, preventing the formation of gas pockets that can impede the flow of water and reduce the overall heating performance.

Crafted from durable cast iron, this separator is built to withstand the rigors of continuous use in residential and commercial applications. Its robust construction ensures reliable and consistent operation, even in demanding environments. The separator is also ASMI (American Society of Mechanical Engineers) certified, which signifies that it meets the highest industry standards for quality and safety.

The Watts 0858536 1/4 ASMI Cast Iron Air Separator features a unique, self-aspirating design that automatically draws air from the water line, eliminating the need for manual air venting. This feature not only simplifies installation but also helps to maintain optimal system performance by continuously removing air as it is introduced into the water supply.

The separator is also equipped with a drain valve, making it easy to drain the accumulated water and sediment for routine maintenance. The drain valve is designed for easy operation, ensuring that you can perform this crucial task quickly and efficiently.

In summary, the Watts 0858536 1/4 ASMI Cast Iron Air Separator is an essential addition to any water heating system, providing improved efficiency, enhanced reliability, and extended system lifespan. Its robust cast iron construction, self-aspirating design, and convenient drain valve make it a top choice for homeowners and professionals alike.

Pros and Cons of Buying a Watts 0858536 1/4 ASMI Cast Iron Air Separator

The Watts 0858536 1/4 ASMI Cast Iron Air Separator is a popular choice for separating air from water in various industrial applications. Let's evaluate the potential advantages and disadvantages of investing in this product.

1. Durable construction: This cast iron air separator is known for its robustness and long-lasting performance. It can withstand high temperatures and pressures, making it suitable for heavy-duty applications.

2. Efficient air removal: The Watts 0858536 effectively separates air from water, ensuring that the water being used in industrial processes is free from air bubbles that may cause issues such as cavitation or inefficient heating.

3. Easy installation: The air separator comes with a built-in drain valve, making it easier to install and maintain. Additionally, it has a compact design that allows for easy integration into various systems.

4. ASMI certification: The product is certified by the American Society of Mechanical Engineers (ASME), which is a recognized industry organization that ensures adherence to strict quality and safety standards.

1. Weight: Due to its cast iron construction, the air separator is relatively heavy, which may pose challenges during transportation and installation.

2. Cost: Compared to other, less heavy-duty air separators, the Watts 0858536 can be more expensive due to its robust design and ASMI certification.

3. Limited capacity: This air separator has a relatively small capacity, which may not be suitable for large-scale industrial applications.

The Watts 0858536 1/4 ASMI Cast Iron Air Separator offers several advantages, such as durability, efficient air removal, easy installation, and ASMI certification. However, it also comes with some disadvantages, including its weight, cost, and limited capacity.

Considering these factors, this air separator is recommended for applications that require a heavy-duty, reliable solution for separating air from water, such as in HVAC systems, boiler feedwater systems, or other industrial processes where air contamination can negatively impact performance. If you're looking for a more cost-effective or larger capacity solution, you may want to explore other options.

Details:

part #: 0858536 prices

• $20.22-$34.99

specifications breezeprobe:

• brand: Watts
• item length: 4 In
• item width: 14 In
• manufacturer part number: 0858536

payments breezeprobe:

• wallet: Apple-pay
• other
• credit card: Mastercard

offer breezeprobe:

• started: November 4, 2025
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0

seller breezeprobe:

• rating: 99.2%
• city: Morgan, Utah
• # reviews: 7517

general breezeprobe:

• HVAC Refrigeration > HVAC Refrigeration Tools > HVAC Refrigeration: Gauges Probes
• condition: New

returns breezeprobe:

• time: 30 Days
• method: Money back
• paid by: Seller
• policy: Returns Accepted

shipping breezeprobe:

• service: USPS Ground Advantage
• carrier: USPS
• type: Fixed
• transit: 3-9 Days
• cost: $0.00
• class: Standard

Watts 0858536 Is Similar To:

• Watts 098268421798 1 Inch Pressure Vacuum Breaker Bonnet Assembly Kit 800m4-b (32.8% similar) Contains o-ring, bonnet, vent spring, hood, and screws. All parts are genuine and original to the valve. All parts are made of high quality materials. Genuine and original parts. This kit includes a bonnet, bonnet o-ring, vent spring, hood and screws. This 1 in 800M4 bonnet assembly...(September 25th, 2024)
• Usvehj 887727-pj-13 0887727 Total Repair Kit For Watts 800m4 Quart Lf800m4 1 2 Inch And 3 4 Pressure (30.6% similar) Unused, ready to use. Excellent condition...(February 28th, 2026)