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TACOPumps Parts

TACO 400-4 Hy-Vent

TACO Pumps Parts.

SKU 3G-OTH-96331

Also listed as: 4004 · 400 4

Brand
TACO
Item
400-4 Hy-Vent
Part Number
400-4
Category
Pumps Parts
Available to Order
Also known as:400-4TACO
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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

TACO
Manufacturer Part Number
400-4

Technical Documents

No technical documents available for this product.
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TACO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

TACO Pumps Parts.

Frequently Asked Questions

What is the maintenance schedule for the TACO 400-4 Hy-Vent?

We recommend a full seal kit replacement every 500-1000 operating hours depending on application. Oil changes should be performed every 250 hours. Contact our service team for a customized maintenance plan.

Used in

Common applications for TACO
Hydronic heating systems — Taco 49-150T-2 inline air separator removes entrained air to maintain loop efficiency.
Domestic hot water recirculation — Taco HLS-1 under-sink pump reduces wait time at fixtures in residential buildings.
Chilled water cooling loops — Taco SFL-150S isolation flange allows equipment service without system drain.
Circulator pump maintenance — Taco 110-009RP motor coupler restores torque transfer in Series 110 pumps.
Water/glycol systems — Taco 49-200T-2 air separator handles 2 in NPT connections at 150 psi and 240°F.
Commercial hydronic balancing — Taco air separators and isolation flanges support efficient fluid control and serviceability.
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TACO Products

3G Electric supplies TACO pumps parts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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High pressure vent with 3/4-inch NPT connection for releasing trapped air from hydronic systems. Used in heating, cooling, and boiler applications to prevent air-lock and maintain system efficiency
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This replacement power head is designed to restore operation of zone valves in hydronic heating systems. It replaces the actuator assembly on compatible valve bodies, enabling flow control in residential and commercial HVAC applications

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Replacement seal kit for compatible TACO pumps. Contains necessary seals and gaskets for restoring pump integrity. Used in hydronic heating and cooling systems
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Replacement gasket for use in TACO pumps and related equipment. Provides a seal between mating surfaces to prevent fluid leakage. Suitable for maintenance and repair of circulating pumps in HVAC and plumbing systems
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Replacement sleeve for TACO pumps. Used to repair or maintain pump assemblies in hydronic heating and cooling systems
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This impeller and shaft assembly is a replacement component for cast-iron pumps used in hydronic heating and water circulation systems. It includes the impeller and shaft as a single unit for restoring pump performance. Suitable for commercial and industrial HVAC applications
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Bronze replacement impeller for TACO pumps used in hydronic heating and HVAC water circulation systems. The bronze construction offers corrosion resistance in water applications. Suitable for commercial and industrial pump service
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Radial ball bearing for rear mounting in pump motor assemblies. Supports the rotor shaft to maintain smooth rotation and reduce vibration in circulating and hydronic systems. Suitable for use in HVAC, plumbing, and process pump applications
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Pressure regulator for hydronic heating and cooling systems. Maintains consistent water pressure within a 10-20 psi range. 1/2-inch connection size. Used on boiler feed lines or expansion tanks to prevent pressure fluctuations
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Ball bearing front thrust component for pump assemblies. Supports axial loads and reduces friction in rotating pump shafts. Used in HVAC, hydronic heating, and fluid circulation systems to maintain pump alignment and extend equipment life

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