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Universal TXV Expansion Valve 3-5 Ton — R410A AC Metering Device
National HVAC Parts

Universal TXV Expansion Valve 3-5 Ton — R410A AC Metering Device

SKU: NHVAC-TXV-3-5T Brand: National HVAC Parts
$59.99
Market price $70.57
SAVE $10.58 (15%) vs market
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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

Universal thermostatic expansion valve (TXV) for R410A systems 3-5 tons. Sized for larger residential and light commercial systems.

  • Refrigerant: R410A
  • Tonnage: 3-5 tons
  • Connection: Sweat (braze)

Install difficulty: 5/5 — Professional installation required. EPA 608, brazing, vacuum, charging.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $99
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this TXV Valve fit my National HVAC Parts Universal TXV Expansion Valve 3-5 Ton — R410A AC Metering Device?
Yes. This is the factory-specified OEM txv valve for the National HVAC Parts Universal TXV Expansion Valve 3-5 Ton — R410A AC Metering Device. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the txv valve on my National HVAC Parts Universal TXV Expansion Valve 3-5 Ton — R410A AC Metering Device?
Requires licensed HVAC technician. Gas valve work involves gas lines that must meet local building codes. Improper installation risks dangerous gas leaks. Buy the part yourself to save 40–60% on markup, then have your technician install it.
What symptoms mean I need a new txv valve?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Will this txv valve fit brands other than National HVAC Parts? +
Cross-brand compatibility varies by part. The safest method is matching the exact OEM part number stamped on your old part. If you are unsure, email info@nationalhvacparts.com with your equipment model number and we will verify the correct replacement before you order.
Should I use OEM or aftermarket for my National HVAC Parts txv valve?
Always use OEM. Gas valves must match exact pressure ratings, port configurations, and safety certifications. Non-OEM gas valves can create safety hazards and may violate building codes.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
HVAC Parts Specialist — Online