how do you determine if 1.6gpf or 3.5gpf or other?

If you look on the top cap it should say. WS1 is1.6gal, WS is 3.5gal, and FF is Full Flush- 4.5 gal

what's the different between zurn p6000-eca and zurn p6000-ecr?

Zurn P6000-ECR-WS1-RK is the diaphragm kit for our Aquaflush line : https://www.zurn.com/products/repair-parts/finish-plumbing/flush-valves/manual/parts-by-category/diaphragm-kits/p6000-eca-ws1 The P6000-ECR-WS1-RK is the diaphragm kit for Zurn’s AquaVantage valves: https://www.zurn.com/products/repair-parts/finish-plumbing/flush-valves/manual/parts-by-category/diaphragm-kits/p6000-ecr-ws1

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Zurn AquaFlush Closet Rebuild Kit, P6000-ECR-WS1-RK, 1.6 gpf, Diaphragm Rebuild Kit

Zurn AquaFlush Closet Rebuild Kit, P6000-ECR-WS1-RK, 1.6 gpf, Diaphragm Rebuild Kit

Product ID: 201203463

Details

Brand
Zurn
Exterior finish
Plastic
Global Trade Identification Number
Inlet connection size
1.6 Inches
Inlet connection type
National Pipe
Item dimensions L x W x H
7.6 x 7.6 x

🌍WaterSense certified eco-friendly

🔧Complete diaphragm rebuild kit

🚿1.6 GPF ultra-efficient flush

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€ 124.07

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In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Upgrade your flush game with Zurn’s smart, sustainable rebuild kit!

ALL IN ONE REBUILD KIT - Everything you need for a seamless valve refresh in one box
PRECISION 1 6 GPF FLUSH - Maximize water savings without sacrificing performance
UNIVERSAL COMPATIBILITY - Fits Zurn AquaVantage, Aquaflush & Sloan Royal/Regal valves effortlessly
TRUSTED BY PROS HOMEOWNERS - 310+ reviews with a stellar 4.7-star rating—join the satisfied crowd
DURABLE SELF CLEANING ORIFICE - Keeps your system clog-free and maintenance minimal

The Zurn AquaFlush Closet Rebuild Kit P6000-ECR-WS1-RK is a WaterSense certified, 1.6 gallons per flush diaphragm kit designed for efficient, reliable toilet valve rebuilding. Compatible with multiple Zurn and Sloan valve bodies, it features a self-cleaning orifice and NPT threaded connections, ensuring easy installation and long-lasting performance. Highly rated by professionals and DIYers alike, this compact 36g kit delivers sustainable water savings and hassle-free maintenance.

Specifications

ASIN	B000M2UDGC
Brand	Zurn
Customer Reviews	4.7 out of 5 stars 310 Reviews
Exterior Finish	Plastic
Exterior finish	Plastic
Global Trade Identification Number	00670240553880
Inlet Connection Size	1.6 Inches
Inlet Connection Type	National Pipe Tapered
Inlet connection size	1.6 Inches
Inlet connection type	National Pipe Tapered
Item Dimensions	7.6 x 7.6 x 7.6 centimetres
Item Weight	0.08 Pounds
Item dimensions L x W x H	7.6 x 7.6 x 7.6 centimetres
Manufacturer	Zurn
Model Number	P6000-ECR-WS1-RK
Outlet Connection Size	1.6 Inches
Outlet Connection Type	NPT
Outlet connection type	NPT
Part Number	P6000-ECR-WS1-RK
Size	1.6 gpf
Specification Met	WaterSense
Thread Type	NPT
UPC	251171306198 251171306914 670240553880
Unit Count	1.0 count
Valve Type	flush valve

Reviews

G**L

Self cleaning orifice, straight vacuum braker reliable.

Good kit.

7.03.2025

B**S

Glad I made the purchase

Great price and works well.

5.03.2026

T**S

OEM quality

Not sure if these are rally Zurn products or not but they fit and work perfect. Great price.

2.01.2020

A**R

Replacement parts

Works great. Need to sell a multi-pack

24.02.2026

M**L

Perfect

Fit and works great. Less than 1/2 the price from buying from a local plumbing store.

19.01.2019

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