Taco Tank Drains & Fittings
Taco Tank Drains & Fittings
National Boiler Supply is a premier, authorized procurement distributor for high-efficiency commercial equipment. Every order ships factory-direct, completely insured, and backed by full manufacturer engineering warranties and technical field support.
| Technical Metric | Operational Threshold Data |
|---|---|
| Product Line Series | Taco Tank Drains & Fittings Matrix (Models 463 / 464 / 438) |
| Body Casting Material | Heavy Commercial-Grade Cast Bronze |
| Interface Sizes Supported | 1/2" NPT, 3/4" NPT, and 1" NPT Threaded Formats |
| Maximum Static Working Pressure | 125 PSIG (862 kPa Maximum) |
| Maximum Fluid Working Temperature | 240°F (115°C) Continuous Duty |
| Venting Extensions Included | 1x 6-inch and 1x 12-inch Copper Air Tubes |
| Valve Seal Functionality | Single-Handle Multi-Path Mechanical Overrides |
| Approved Fluid Infrastructure | Water, Closed Hydronic Glycol Combinations up to 50% |
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The Taco Comfort Solutions Tank Drains & Fittings series delivers an unyielding mechanical standard for manual air-cushion management and drainage across industrial hydronic loops. Cast from resilient, commercial-grade bronze, these components combine an isolation shut-off valve and an auxiliary tank drainage port within a single high-durability body assembly. Engineered explicitly to maintain a strict volumetric atmospheric cushion inside conventional steel compression reservoirs, they prevent system water from completely water-logging the tank shell, ensuring continuous system safety against thermal water expansion spikes.
Advanced Engineering & Architectural Advantages:
- Consolidated All-in-One Architecture: Combines a primary system line shut-off configuration and a high-flow drain valve into a unified bronze footprint, significantly reducing physical leak paths and mechanical field assembly labor times.
- Smart Gravity Flow Restriction: Built with internal baffling that slows downstream thermal gravity circulation currents between the boiler main and the compression cell, holding tank temperatures low to prevent air bubbles from dissolving back into system fluid.
- Flexible Air Venting Core: Outfitted with dual rigid copper air tube extensions that capture entrained micro-bubbles and route them cleanly into the expansion core to sustain the pressure blanket.
System Application Envelope: Universally certified for closed hydronic heating loops, water/glycol solutions up to 50% concentration, solar thermal setups, and closed commercial cooling applications.
