The Jandy Pro Series TruClear Winterizing Cap (Part # R0621900) is the genuine OEM winterizing and pressurizing cap for the Jandy Pro Series TruClear salt chlorine generating system. It seals the cell opening so water cannot enter during the off-season, helping protect the chlorinator from freeze damage, and it is also used during installation and system pressurization. Corrosion-resistant black housing with a clear viewing window and a factory O-ring seal.
Key Features
- Genuine Jandy / Zodiac OEM replacement part
- Winterizing cap: seals the TruClear salt cell opening for seasonal shutdown
- Also used for installation and pressurizing the system
- Clear window for visual inspection
- Corrosion-resistant construction
- O-ring seal for a watertight fit
- Direct replacement for part numbers 43-100-1130, JDY-45-9881 and 950186
Specifications
- Part Number (MPN): R0621900
- Alternate Part Numbers: 43-100-1130, JDY-45-9881, JNDR0621900, 950186
- Brand: Jandy (Zodiac Pool Systems)
- UPC / GTIN: 052337072397
- Shipping Weight: 1.43 lb
- Approx. Dimensions: 8.5 x 8.8 x 8.45 in
- Fits: Jandy Pro Series TruClear Salt Chlorinator (Chlorine Generating System)
- Included: 1 winterizing cap with O-ring
- Condition: New
Frequently Asked Questions
What does the Jandy R0621900 winterizing cap fit?
It is made for the Jandy Pro Series TruClear salt chlorinator. Manufacturers do not list individual model numbers for this cap, so please confirm you have a TruClear system before ordering.
What is the winterizing cap used for?
It closes off the salt cell opening during seasonal shutdown so water cannot enter and freeze, and it is also used for installation and pressurization.
Is this a genuine OEM part?
Yes. R0621900 is the original Jandy / Zodiac part, also listed as 43-100-1130, JDY-45-9881 and 950186.
Does it include an O-ring?
Yes, the cap comes with its O-ring seal.
Can I use it to winterize other chlorinators?
It is designed specifically for the TruClear system. Do not use it on other brands or chlorinator series.
Part number? R0621900 (also 43-100-1130 / JDY-45-9881 / 950186).
Fit? Jandy Pro Series TruClear Salt Chlorinator.
Install? Tool-free; hand install, check the O-ring is seated.
Warranty? Covered by manufacturer terms for new OEM parts.
California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
