Does this fit clean and clear plus 520?

Yes, it is universal. It will have threads on it, but will slide over the pipe.

What is the purpose of specific purpose of this and how do you know if it's working properly?

he air relief valve, a.k.a the bleeder valve, bleeds trapped air from the pool filter. In practice, it’s meant to be opened after you start the pool pump, to release air trapped at the top of the filter tank. Close the valve knob once water starts to spray out of the valve.

Is there a spring that goes with this filter? I seem to have misplaced mine. Will no spring affect how it works?

This screen cap replacement part does not come with that compression spring which is actually attached to the filter manifold. I believe you can buy that as a separate replacement part for Pentair part #178616. I believe the spring is necessary to keep the screen cap in place on the air bleed tube and to keep the fine mesh top from getting crushed by the Pentair filter housing.

How to remove the old one from the tube? Mine seems glued.

It shouldn't be glued to the tube, just pull it off!

Pentair 190106z Air Bleeder For Easyclean D E Filter

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€ 43.25

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Upgrade your pool game with precision and durability!

BUILT TO LAST - Crafted from corrosion-resistant plastic that holds shape after multiple cleanings.
TRUSTED INNOVATION - From Pentair, the global leader in pool tech—reliability you can count on.
COMPACT LIGHTWEIGHT - Only 20g and 4 inches long—engineered for easy handling and installation.
EFFORTLESS MAINTENANCE - Manual air bleeder simplifies filter cleaning, saving you time and energy.
SEAMLESS COMPATIBILITY - Direct fit for C&C 420 filters—no hassle, just perfect alignment.

The Pentair 190106Z Air Bleeder is a high-performance, corrosion-resistant replacement screen cap designed for C&C 420 filters. Lightweight and compact, it ensures easy manual air bleeding for efficient pool filter maintenance, backed by Pentair’s reputation for innovation and reliability.

Specifications

ASIN	B071XHCVZ6
Batteries Included?	No
Brand	Pentair
Color	Black
Customer Reviews	4.5 4.5 out of 5 stars (373)
Date First Available	4 November 2017
Height	2 inches
Included Components	Pentair Rplcmt Screen Cap Pls Arbld
Is Discontinued By Manufacturer	No
Item model number	190106Z
Length	4 inches
Manufacturer	Pentair
Material Type	Plastic
Number of Items	1
Power Source	manual
Product Dimensions	10.16 x 5.08 x 5.08 cm; 20 g
Weight	1 Pounds
Width	2 inches

Reviews

T**E

Works great in my pool filter. It's a quality product and I would buy another one when the time comes.......5 or 6 years down to road:)

8.04.2025

S**Y

Tried a 3rd party screen cap that collapsed and distorted on it's first use. This name brand screen cap has held up through 2 cleanings so far.

31.03.2026

B**R

Exact replacement for my pentaire filter. Easy to replace. Would buy again.

7.04.2025

B**D

Works great

22.08.2023

M**N

Yes, it fits. I saved money buy ordering this part instead of the entire "assembly" composed of this part and some PVC pipe. I noticed my screen cap was cracked and I started looking for the replacement. Last time I overpaid and ordered the screen cap with the PVC. This time I did a little research and took a chance on this part and I am glad to say it fits perfectly.

21.03.2021

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TrustScore 4.5 | 7,300+ reviews

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