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Have this part? Send us a photo →PURE Humidifier 21051 Butterfly Valve M90010
Genuine PURE Humidifier Co. part 21051. We can order it but don't stock it yet, so there's no price shown. Send the quantity and your unit's model and serial — a real person replies with price and lead time, usually within one business day.
Not sure it's the right part? Send the model and serial — help@totalhvacparts.com or 302-219-4994.
Overview
PURE Humidifier 21051 — Butterfly Valve: M90010. A butterfly valve listed in the burner parts lists for PURE GX and GXDDR gas-fired humidifiers.
Used on these PURE units: GX-3, GX-4, GX-8, GX-12, GXDDR-3, GXDDR-4, GXDDR-8, GXDDR-12. Models are taken from PURE's published O&M parts lists, which do not print a quantity per unit for this part.
Genuine PURE Humidifier Co. OEM part — not an aftermarket substitute. Ships via UPS or FedEx Ground, or by truck freight for oversized items. Quoted individually — contact us for current price and lead time. See our Return and Refund Policy for return eligibility.
Series guide: Not sure which PURE unit this part belongs to? See PURE Humidifier GX Series: How to Identify Your Gas-Fired Unit and Find Its Replacement Parts for how to identify the series and model.
What is PURE Humidifier part 21051?
21051 is the PURE Humidifier Co. part number for the Butterfly Valve: M90010. Part type: Butterfly valve.
Which PURE humidifiers use part 21051?
It is listed for PURE GX and GXDDR units; the model list is in the paragraph above. Always confirm with your unit's model and serial number.
How do I order 21051?
Quoted individually — contact us for current price and lead time. Include your PURE model and serial number so we can confirm fit.
Fits These Units
Confirmed to fit the PURE Humidifier Co. units below — and these are not the only models this part fits. Contact us for the entire compatibility list, or if you don't see your unit, send the model and serial and we'll confirm before you buy.
- GX-3
- GX-4
- GX-8
- GX-12
- GXDDR-3
- GXDDR-4
- GXDDR-8
- GXDDR-12
Specifications
Values in italic are not yet confirmed from OEM documentation. Ask us to verify before ordering.
Ask the Parts Desk
Tell us how many you need and the model and serial from the unit's data plate — a real person confirms fit and replies with price and lead time.
Common Questions
Is the stock number on this page real?
There's no shelf count or price on this page — it's listed so you can find the part and request a quote. A real person replies with price and lead time.
Is this a genuine PURE Humidifier Co. part, or aftermarket?
Genuine PURE Humidifier Co. OEM equipment sourced through PURE Humidifier Co.'s authorized parts program — not an aftermarket substitute.
How do I confirm this fits my unit?
Match part number 21051 to your unit's parts diagram. If unsure, send us your model and serial number and we'll verify before you order.
What's the warranty on this part?
Warranty terms vary by manufacturer. Contact us with your order number for details specific to this part.
How fast does this ship?
Lead time is quoted per order for this part; we confirm it with the manufacturer before you commit.
Does everything ship UPS or FedEx Ground?
Most orders ship UPS or FedEx Ground. A small number of large or heavy parts across the catalog ship by truck freight instead, and we reach out to arrange a delivery window before those orders leave the warehouse. Oversized items that ship by truck freight are also covered by free standard shipping on orders of $50 or more.

