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Watts AS-M1-1-1/4 Inline Air Separator - Inline Air Separators
WattsInline Air Separators

Watts AS-M1-1-1/4 Inline Air Separator

The Watts Air Separator with Cast Iron Body (MPN AS-M1-1-1/4) is an inline air separator designed for water systems. It features a 1 1/4 in Female NPT connection, horizontal orientation, and a maximum pressure of 80…

SKU 3G-OTH-71014

Also listed as: ASM1114 · AS M1 1 1 4 · AS-M1-1-1-4

Brand
Watts
Item
AS-M1-1-1/4 Inline Air Separator
Part Number
AS-M1- 1-1/4
Category
Inline Air Separators
Available to Order
Also known as:AS-M1- 1-1/4Watts
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

Watts
Manufacturer Part Number
AS-M1- 1-1/4
Type
For Water, Horizontal
Max
275°F
Max.
80 psi
Female NPT
1 1/4 in
Product Type
Air Separator

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Watts Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Watts Air Separator with Cast Iron Body (MPN AS-M1-1-1/4) is an inline air separator designed for water systems. It features a 1 1/4 in Female NPT connection, horizontal orientation, and a maximum pressure of 80 psi with a maximum temperature of 275°F.

Frequently Asked Questions

What is a Watts air separator used for?

A Watts air separator removes entrained air and micro-bubbles from hydronic heating and cooling water systems. It improves system efficiency, reduces noise, and prevents corrosion and pump cavitation in commercial and industrial closed-loop applications.

What are the specifications of the Watts AS-M1-1-1/4 air separator?

The Watts AS-M1-1-1/4 air separator has a cast iron body, 1 1/4 in female NPT connections, horizontal orientation, maximum pressure of 80 psi, and maximum temperature of 275°F. It is designed for water systems only.

Where to buy a Watts air separator worldwide?

3G Electric supplies the Watts AS-M1-1-1/4 air separator to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this and other Watts products.

How to install a Watts inline air separator?

Install the Watts air separator horizontally in the main supply line, typically at the highest point of the system or where air naturally collects. Ensure flow direction matches the arrow on the body. Use pipe sealant on NPT threads and support the cast iron body to avoid stress.

Used in

Common applications for Watts
Commercial plumbing – Watts standard capacity water pressure regulators (3/8 LF 26AB) for stabilizing incoming water pressure
Industrial steam systems – Watts 152A series steam pressure regulators for pressure reduction in process and heating lines
Cross-connection control – Watts 757 double check backflow preventers for commercial and industrial water supply protection
Boiler safety – Watts ASME Section XIII temperature and pressure relief valves for overpressure protection in heating systems
Hydronic heating – Watts CP16 pilot-operated pressure regulators for maintaining consistent pressure in steam or water loops
Water hammer mitigation – Watts LF15M2-A water hammer arrestors for absorbing surges in quick-closing valve applications
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Watts Products

3G Electric supplies Watts inline air separators. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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