| Component form | Flap Internal moving or sealing element used in a throttle valve assembly. |
|---|---|
| Valve position | Bottom main Indicates the flap belongs to a main lower/bottom portion of the valve assembly. |
| Revision observed | Rev 002 A revision reference appears; revision matching is recommended. |
| Alternate wording | Flat top appears once Most evidence says bottom main flap; the flat-top wording should not be treated as primary. |
A throttle valve flap is a mechanical element inside a vacuum throttle valve that contributes to flow restriction or sealing.
Throttle valves regulate chamber pressure by controlling conductance between the chamber and pumping line.
Controlled restriction of pumping conductance to regulate chamber pressure.
Product reference only. Confirm fitment, revision, included components, and specifications before purchase.
No public documents were listed for this part when captured.
Prices and availability may change. Confirm details with the seller.
Observed public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 13, 2026 16:18 UTC
Availability has not been rechecked; current availability is unknown.
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eBay response captured — Checked Oct 6, 2026 16:22 UTC
Availability has not been rechecked; current availability is unknown.
Best Offer · Buy It Now
View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 20, 2026 16:01 UTC
Availability has not been rechecked; current availability is unknown.
Best Offer · Buy It Now
View on eBayObserved public listing price, not an accepted sale amount.
eBay response captured — Checked Oct 19, 2026 16:08 UTC
Availability has not been rechecked; current availability is unknown.
Best Offer · Buy It Now
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No active-status direct listings are shown on this page.
Auction listing history. Direct marketplace listings are shown separately.
| Currency | Price basis | Records | Minimum | Maximum | Mean |
|---|---|---|---|---|---|
| USD | Observed public listing prices | 4 | 500.0000 | 1299.0000 | 725.7950000000000000 |
Amounts without an established currency are retained in the history below and excluded from monetary comparisons. Bids, public listing prices and accepted amounts are distinct; no currency conversion is applied.
| Time recorded | Listing | Observation | Public price | Recorded acceptance |
|---|---|---|---|---|
| Feb 19, 2025 11:16 UTC | 🆠AMAT Applied Materials 0021-04317 FLAP,BOTTOM,MAIN,THROTTLE VALVE | Completed listing price | 65 (currency not captured) | Not established |
| Apr 22, 2024 15:58 UTC | 🆠AMAT Applied Materials 0021-04317 FLAP,BOTTOM,MAIN,THROTTLE VALVE | Completed listing price | 65 (currency not captured) | Not established |
| Apr 6, 2018 19:10 UTC | Applied Materials 0021-04317 Flap Bottom Main Throttle Valve | Completed listing price | 601.18 (currency not captured) | Not established |
| Apr 18, 2015 03:02 UTC | NEW Applied Materials AMAT 0021-04317 //FLAP BOTTOM MAIN THROTTLE VALVE | Completed listing price | 149.99 (currency not captured) | Not established |
| Mar 19, 2015 03:02 UTC | NEW Applied Materials AMAT 0021-04317 //FLAP BOTTOM MAIN THROTTLE VALVE | Completed listing price | 149.99 (currency not captured) | Not established |
| Feb 17, 2015 03:01 UTC | NEW Applied Materials AMAT 0021-04317 //FLAP BOTTOM MAIN THROTTLE VALVE | Completed listing price | 149.99 (currency not captured) | Not established |
| Jan 17, 2015 18:09 UTC | NEW Applied Materials AMAT 0021-04317 //FLAP BOTTOM MAIN THROTTLE VALVE | Completed listing price | 149.99 (currency not captured) | Not established |
Public listing prices, direct recorded sale prices and recorded accepted Best Offer amounts remain distinct. Quantities are source estimates. No aggregate sales total or average is inferred.
Prices and availability may change. Confirm details with the seller.
Legacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
View on eBayLegacy public listing price; currency may not have been captured.
Legacy record; no enhanced status check captured
Check time or freshness is unknown; current availability is unknown.
Best Offer lookup was not verified; no accepted-price claim is made.
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