Quick Take
When you're shopping for refrigeration valves, pumps, and line components, the first decision is figuring out which part your project actually needs. A refrigerator that's stopped making ice might need a long water supply line, a piercing valve to access sealed tubing, or a quick-connect union to simplify service. Other jobs call for a seamless copper run. The four components here span a wide price range, and each one is built for a different task, so there isn't a single always-right answer--there's a right fit for your line setup.
Listed Price Comparison
| Product | Listed Price | Price Bar | Best For |
|---|---|---|---|
| IMT14100 Refrigerator Ice Maker Water Line Tubing 1/4 Inch OD | USD 70.99 | Long ice maker supply runs and full replacements | |
| A1 Refrigerator Line Tap Access Piercing Valve fits 1/4" 5/16" 3/8" OD Tubing | USD 12.96 | Adding a service access port to existing tubing | |
| Copper Tubing 1/8 In OD X 50Ft Refrigeration Copper Tubing | USD 69.99 | Seamless copper line work needing a 50-foot coil | |
| RectorSeal 87018 PRO-Fit 1/4" Quick Connect Union Refrigerant Line | USD 12.99 | Quick connect and disconnect on 1/4-inch lines |
Decision Matrix
| Use Case | Product to Consider |
|---|---|
| Running or replacing an ice maker supply line | IMT14100 tubing |
| Adding a service access point to sealed tubing | A1 piercing valve |
| Installing a seamless copper line | Copper tubing coil |
| Quick service access on an existing refrigerant line | RectorSeal union |
Product Notes
IMT14100 Refrigerator Ice Maker Water Line Tubing 1/4 Inch OD

This clear 1/4-inch outside diameter tubing comes on a 1,200-inch roll, which translates to 100 feet of linear low-density polyethylene line. It's the highest-priced product here at USD 70.99, and it's the one aimed at full ice maker water supply runs rather than small patches. The material is rated to 205 psi, so it can handle typical supply-line duty, and the included components are the tubing itself. The limitation is length: if your refrigerator sits close to the water source, 100 feet is a lot of spare tubing to coil up. It's best when you need one continuous, long run and want a single roll.
A1 Refrigerator Line Tap Access Piercing Valve fits 1/4" 5/16" 3/8" OD Tubing

At USD 12.96, the A1 Components piercing valve is the lowest-priced item in this comparison. It fits 1/4-inch, 5/16-inch, and 3/8-inch OD tubing, so one valve covers several common line sizes. The hex wrench is included, and installation is DIY. The trade-off is that this is a piercing-style access valve, so it creates a port by piercing the tubing rather than replacing a section of line. If you need universal sizing and a low price, this is the one.
Copper Tubing 1/8 In OD X 50Ft Refrigeration Copper Tubing

This USD 69.99 coil gives you 50 feet of 1/8-inch outside diameter seamless copper tubing, made in the United States. It's built to the ASTM B280 standard for seamless copper tube, with high-purity copper and corrosion resistance, making it a strong candidate for air conditioning and refrigeration lines. The seamless construction and controlled phosphorus levels support smooth interior flow. The limitation is the size: a 1/8-inch OD is a smaller-diameter line, and the coil length is 50 feet.
RectorSeal 87018 PRO-Fit 1/4" Quick Connect Union Refrigerant Line

The RectorSeal 87018 at USD 12.99 is the only quick-connect union in this group. It's designed for 1/4-inch refrigerant lines and allows easy connection and disconnection, which can save time during maintenance or repair. The PRO-Fit design offers strong, durable construction for demanding environments, and the product is made in the United States. The model is 87018 with UPC 021449870184. The obvious limitation is the fixed size: it's a 1/4-inch line component, so it's suited to 1/4-inch service.
Final Recommendation
Choose by the job. For a long ice maker supply run, the IMT14100 tubing is the purpose-built roll. For adding a service access point, the A1 piercing valve covers common OD sizes at the lowest listed price. For a seamless copper line, the coil is the metal option. And for quick service access, the RectorSeal union is the choice.