We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

Image not available
ARMSTRONG INTERNATIONALThermostatic Air Vents

ARMSTRONG INTERNATIONAL Repair Part: For Steam, Cast Iron Body, 75 psi Max.

This is a thermostatic air vent from ARMSTRONG INTERNATIONAL, designed as a repair part for steam systems. It features a cast iron body with a maximum pressure rating of 75 psi and a maximum temperature of 377°F. The…

SKU 3G-OTH-70322

Brand
ARMSTRONG INTERNATIONAL
Item
Repair Part: For Steam, Cast Iron Body, 75 psi Max.
Category
Thermostatic Air Vents
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

ARMSTRONG INTERNATIONAL
Manufacturer Part Number
A9739
Product Type
Air Vent
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

This is a thermostatic air vent from ARMSTRONG INTERNATIONAL, designed as a repair part for steam systems. It features a cast iron body with a maximum pressure rating of 75 psi and a maximum temperature of 377°F. The product is identified by manufacturer part number A9739.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Armstrong International A9739 thermostatic air vent used for?

The Armstrong International A9739 is a repair part for steam systems. It is a thermostatic air vent with a cast iron body, designed to automatically release air from steam equipment, improving heat transfer and system efficiency. It is commonly used in industrial steam heating and process applications.

What are the specifications of the Armstrong A9739 air vent?

The Armstrong A9739 is a thermostatic air vent with a cast iron body. It has a maximum pressure rating of 75 psi and a maximum temperature of 377°F. The manufacturer part number is A9739, and it is designed as a repair part for steam systems. Always verify compatibility with your existing equipment.

Where to buy the Armstrong A9739 air vent worldwide?

You can source the Armstrong A9739 thermostatic air vent through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we source and deliver this repair part to your location.

How to install the Armstrong A9739 thermostatic air vent?

Install the Armstrong A9739 by first depressurizing and draining the steam system. Remove the old vent and clean the mounting surface. Apply thread sealant to the new vent's threads and tighten to the manufacturer's recommended torque. Test for leaks after system repressurization. Always follow Armstrong International's installation guidelines.

Used in

Common applications for ARMSTRONG INTERNATIONAL
Chemical processing — Armstrong International inverted-bucket steam traps (e.g., 882-050-125) for condensate removal from heat exchangers.
Food and beverage — Armstrong International corrosion-resistant steam traps (e.g., 1811-050-200) for steam tracing on sanitary lines.
Refining — Armstrong International high-pressure steam traps (e.g., 1822-100-650) for process steam mains.
Commercial HVAC — Armstrong International steam spargers (e.g., MS6-1-1/4") for hot water generation in boiler systems.
Pharmaceutical — Armstrong International stainless-steel steam traps (e.g., 1811-050-400) for clean steam applications.
Power generation — Armstrong International cast-iron steam traps (e.g., 883-075-250) for turbine drain lines.

ARMSTRONG INTERNATIONAL Products

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

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 219 psi Max., 450°F Max. (MPN 1AV-3/4"-#38). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-#38.
ARMSTRONG INTERNATIONAL
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 219 psi Max., 450°F Max. (MPN 1AV-3/4"-#38). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-#38.
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 300 psi Max., 450°F Max. (MPN 1AV-3/4"-5/64"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-5/64".
ARMSTRONG INTERNATIONAL
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 300 psi Max., 450°F Max. (MPN 1AV-3/4"-5/64"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-5/64".
Air Vent: Angle, Top Port, 3/4 in FNPT, For Steam, Stainless Steel Body, 267 psi Max., 500°F Max. (MPN 11AV-3/4"-#38). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 11AV-3/4"-#38.
ARMSTRONG INTERNATIONAL
Air Vent: Angle, Top Port, 3/4 in FNPT, For Steam, Stainless Steel Body, 267 psi Max., 500°F Max. (MPN 11AV-3/4"-#38). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 11AV-3/4"-#38.
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 146 psi Max., 450°F Max. (MPN 1AV-3/4"-1/8"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-1/8".
ARMSTRONG INTERNATIONAL
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 146 psi Max., 450°F Max. (MPN 1AV-3/4"-1/8"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-1/8".
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 173 psi Max., 450°F Max. (MPN 1AV-3/4"-7/64"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-7/64".
ARMSTRONG INTERNATIONAL
Air Vent: Angle/In-line, Top Port, 3/4 in FNPT, For Steam, Cast Iron Body, 173 psi Max., 450°F Max. (MPN 1AV-3/4"-7/64"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 1AV-3/4"-7/64".
Air Vent: Angle, Top Port, 3/4 in FNPT, For Steam, Stainless Steel Body, 178 psi Max., 500°F Max. (MPN 11AV-3/4"-1/8"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 11AV-3/4"-1/8".
ARMSTRONG INTERNATIONAL
Air Vent: Angle, Top Port, 3/4 in FNPT, For Steam, Stainless Steel Body, 178 psi Max., 500°F Max. (MPN 11AV-3/4"-1/8"). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: 11AV-3/4"-1/8".

More from ARMSTRONG INTERNATIONAL

View all ARMSTRONG INTERNATIONAL parts
ARMSTRONG INTERNATIONAL
ARMSTRONG INTERNATIONAL
Repair Part: For Steam, Cast Iron Body, 30 psi Max., 377°F Max. (MPN A5345). Key specifications — Product Type: Air Vent; Brand: ARMSTRONG INTERNATIONAL; Manufacturer Part Number: A5345.