LEGO Two-Way Valve and Non-Return Valve 5106-1
LEGO Two-Way Valve and Non-Return Valve (5106-1) is estimated at about $22 sealed as of Sep 2026 (retail $4). Retired · 2 pieces · 1987 Service Packs.
- Set number
- 5106-1
- Theme
- Service Packs
- Subtheme
- Technic
- Year
- 1987
- Pieces
- 2
- Minifigures
- 0
- RRP
- $4
- Market value
- $22 (Estimate, Sep 2026)
- Used value
- $8
- Retirement
- Retired
Two-Way Valve and Non-Return Valve value by year
From $18 in 2017 to $22 (Estimate, Sep 2026): +21%. Its highest year was 2025, at $22.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $22 | −2.6% |
| 2026 (so far) | $22 | −0.9% |
| 2025 | $22 | +4.0% |
| 2024 | $21 | −3.5% |
| 2023 | $22 | +3.0% |
| 2022 | $22 | +0.0% |
| 2021 | $22 | +11.1% |
| 2020 | $19 | +1.1% |
| 2019 | $19 | +2.8% |
| 2018 | $19 | +4.2% |
| 2017 | $18 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Two-Way Valve and Non-Return Valve (5106-1) worth?
LEGO Two-Way Valve and Non-Return Valve is worth approximately $22 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Two-Way Valve and Non-Return Valve retired?
Yes — Two-Way Valve and Non-Return Valve (5106-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Has LEGO Two-Way Valve and Non-Return Valve gone up in value?
Yes. Two-Way Valve and Non-Return Valve launched at $4 and now trades around $22, an increase of 519.1%. See the price history chart for how it got there.
What is the price per piece for Two-Way Valve and Non-Return Valve?
At its $4 retail price across 2 pieces, Two-Way Valve and Non-Return Valve works out to about $1.750 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Two-Way Valve and Non-Return Valve a good investment?
Two-Way Valve and Non-Return Valve currently trades 519.1% above its $4 retail price, and it is retired, so no new supply is entering the market. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.
Why is LEGO Two-Way Valve and Non-Return Valve so expensive?
Two-Way Valve and Non-Return Valve was released in 1987 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.