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BELL & GOSSETT Vertical-Discharge Air Vent, 3/4 in MNPT, Brass Body, 150 psi - Vertical-Discharge Air Vents
BELL & GOSSETTVertical-Discharge Air Vents

BELL & GOSSETT Vertical-Discharge Air Vent, 3/4 in MNPT, Brass Body, 150 psi

The BELL & GOSSETT Air Vent: One Port is a vertical-discharge air vent designed for water systems. It features a 3/4 in MNPT top port and a brass body, with a maximum pressure rating of 150 psi and a maximum…

SKU 3G-OTH-70099

Brand
BELL & GOSSETT
Item
Vertical-Discharge Air Vent, 3/4 in MNPT, Brass Body, 150 psi
Part Number
78
Category
Vertical-Discharge Air Vents
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

BELL & GOSSETT
Manufacturer Part Number
78
Type
Top Port, For Water, Brass Body, Bottom
MNPT
3/4 in
Max.
150 psi
Product Type
Air Vent

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BELL & GOSSETT Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The BELL & GOSSETT Air Vent: One Port is a vertical-discharge air vent designed for water systems. It features a 3/4 in MNPT top port and a brass body, with a maximum pressure rating of 150 psi and a maximum temperature of 250°F. This model, MPN 78, is a single-port unit with a bottom connection.

Frequently Asked Questions

What is a BELL & GOSSETT Air Vent MPN 78 used for?

The BELL & GOSSETT Air Vent MPN 78 automatically releases trapped air from water systems, preventing air locks and improving system efficiency. It is commonly installed on hydronic heating and cooling loops, boiler systems, and process water lines where air removal is critical.

What are the specifications of the BELL & GOSSETT Air Vent 78?

The BELL & GOSSETT Air Vent 78 has a 3/4 in MNPT top port, brass body, and bottom connection. It is rated for water service up to 150 psi maximum pressure and 250°F maximum temperature. This single-port, vertical-discharge model is designed for reliable air venting in closed-loop systems.

Where to buy a BELL & GOSSETT Air Vent 78 worldwide?

3G Electric supplies the BELL & GOSSETT Air Vent 78 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this brass-body air vent for water systems.

How to install a BELL & GOSSETT Air Vent 78?

Install the BELL & GOSSETT Air Vent 78 at the highest point of the water system where air naturally collects. Use thread sealant on the 3/4 in MNPT connection and tighten securely. Ensure the vent is oriented vertically for proper discharge. Follow standard piping practices for pressure and temperature limits.

Used in

Common applications for BELL & GOSSETT
Steam heating systems — Bell & Gossett cast iron F&T steam traps (FT030H-5) for condensate removal in commercial buildings
Hydronic air elimination — Bell & Gossett vertical-discharge air vents (MPN 87) for water systems in HVAC applications
Steam trap maintenance — Bell & Gossett cover gaskets (MPN 405602) and repair kits (MPN 405620) for field servicing of existing traps
Low-pressure steam processes — Bell & Gossett brass offset thermostatic traps (MPN 17C-S-2-25) for condensate drainage in industrial equipment
Replacement of thermostatic elements — Bell & Gossett steam trap elements (MPN 405628) for 17C series traps in process steam lines
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BELL & GOSSETT Products

3G Electric supplies BELL & GOSSETT vertical-discharge air vents. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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