Legend Valve
Legend Valve 352-451 4" galvanized union bathware
Four-inch galvanized union with female NPT threads for joining bathware piping
- ColorTransparent
- Size4"
- TypePipes, Valves & Fittings
- 4" galvanized union connects pipes securely
- FNPT x FNPT threads allow direct female-to-female joining
- Galvanized coating resists corrosion in plumbing systems
- Legend Valve brand ensures reliable bathware performance
- California Prop 65 notice discloses chemical safety information
4" galvanized union for bathware plumbing
This 4-inch galvanized union connects two female NPT threads in bathware installations. It provides a removable joint that simplifies maintenance and future pipe reconfiguration. The fitting is supplied new from Legend Valve under part number 352-451.
Practical limits of threaded galvanized connections
Galvanized threads seal with tape or compound and can loosen under vibration or thermal cycling. The union design allows disassembly without cutting pipe, but the joint remains a potential leak path if not retightened after pressure testing. California Proposition 65 warnings indicate the presence of chemicals linked to cancer and reproductive harm.
Replaces fixed couplings when service access matters
Use this union instead of a solid coupling wherever the pipe run must be broken for valve replacement, fixture upgrades or seasonal draining. The jump is worth it when the cost of cutting and re-threading outweighs the union's slightly larger profile and higher initial price.
Highlights
- 4" galvanized union connects pipes securely
- FNPT x FNPT threads allow direct female-to-female joining
- Galvanized coating resists corrosion in plumbing systems
- Legend Valve brand ensures reliable bathware performance
- California Prop 65 notice discloses chemical safety information
Specifications
| Brand | LEGEND VALVE |
|---|---|
| Color | Transparent |
| Size | 4" |
| Type | Pipes, Valves & Fittings |
Questions about this item
Which size of the Legend Valve 352-451 union should I choose for a four-inch galvanized pipe system?
The 352-451 model is a 4-inch SA galvanized union with FNPT x FNPT threads, so it matches a four-inch galvanized pipe system directly.
What does the California Proposition 65 warning mean for daily use of this fitting?
The warning indicates the product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm; it is a regulatory notice, not a performance limitation.
How does the FNPT x FNPT thread standard affect installation?
Both ends use female National Pipe Taper threads, so the union connects to male-threaded galvanized pipe or nipples without adapters.
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