---
product_id: 53426266
title: "W.C. Fill Valve Bottom Entry"
brand: "fluidmaster"
price: "$52"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/53426266-w-c-fill-valve-bottom-entry
store_origin: NZ
region: New Zealand
---

# Compact 17x5x39 cm footprint Quiet and fast fill operation Height adjustable for perfect fit W.C. Fill Valve Bottom Entry

**Brand:** fluidmaster
**Price:** $52
**Availability:** ✅ In Stock

## Summary

> 🚽 Upgrade your flush game with silent precision!

## Quick Answers

- **What is this?** W.C. Fill Valve Bottom Entry by fluidmaster
- **How much does it cost?** $52 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/53426266-w-c-fill-valve-bottom-entry)

## Best For

- fluidmaster enthusiasts

## Why This Product

- Trusted fluidmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pressure-Ready:** Optimized for exceptional performance even under low water pressure conditions.
- • **Space-Savvy Design:** Slim profile fits effortlessly into compact toilet tanks, maximizing space efficiency.
- • **Tailored Fit, Every Time:** Height adjustable design ensures seamless installation in any cistern size.
- • **Complete Installation Kit:** Includes fill valve, washer, spigot nut, restrictor, and clear instructions for hassle-free setup.
- • **Whisper-Quiet Performance:** Engineered for silent operation, eliminating noisy fill cycles.

## Overview

The W.C. Fill Valve Bottom Entry is a WRAS-certified, height-adjustable plastic fill valve designed for quiet, fast filling in compact cisterns. Its small footprint and low-pressure optimization make it ideal for modern toilets, while the included installation components ensure a smooth, professional setup.

## Description

W.C. Fill Valve Bottom Entry

## Features

- W.C. Fill Valve Bottom Entry

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Generic |
| Part Number | B661AT |
| Product Dimensions | 17 x 5 x 39 cm; 150 g |
| Item model number | B661AT |
| Colour | One Colour |
| Material | Plastic |
| Item Package Quantity | 1 |
| Certification | WRAS |
| Included Components | Fill Valve, washer, spigot nut, restrictor and instructions |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 150 g |

## Product Details

- **Material:** Plastic
- **Brand:** Fluidmaster
- **Item dimensions L x W x H:** 17 x 5 x 39 centimetres
- **Exterior finish:** Plastic
- **Inlet connection size:** 0.5 inches
- **Inlet connection type:** Compression
- **Outlet connection type:** FNPT
- **Number of ports:** 2
- **Outlet connection size:** 0.5 inches
- **Specification met:** WRAS

## Images

![W.C. Fill Valve Bottom Entry - Image 1](https://m.media-amazon.com/images/I/51d5Ze66ECL.jpg)

## Questions & Answers

**Q: What diameter is the inlet pipe ?**
A: I honestly can't remember but I have non mains water (i.e. a private well)  with VERY low water pressure so had a big problem finding a suitable item to cope with low water pressure. This model was the only one that worked and it has been fine for several years now. I imagine the inlet was either three quarters bsp or 22mm pipework. Posibly 15mm - whatever diameter pipe enters the cistern is the size to work from. Probably, on refelction 15mm but if it is a BSP (British Standard PIpethread) then that will determine the fitting. Suspect it will be a tank connector of some sort with BSP on one side and either 22mm or 15mm on the other.

HM

**Q: Why does it hum after flushing**
A: Good question.  We had our plumber replace both this and the flush valve. Our cistern still 'chugs' like an engine usually after the short flush, long flush usually ok. We've had the plumber back 3 x times so far so we were wondering if our recently replaced flush valve is defective as we've noticed water trickling into the pan when it gets noisy?  Getting to the point of replacing the whole toilet/cistern, its driving us mad!

**Q: Is this suitable for mains pressure fill.**
A: We use it for mains pressure filling of our cistern.  As previous comment it does seem very flimsy, but has worked ok so far!

**Q: I require the model without the plastic hoop at the water entry point, can you help**
A: Sorry - I'm not really sure about this.  Do you mean the white, circular lip towards the bottom of the water entry tube?  If that's what you mean, it acts to seal the tube and the bottom of the cistern so is pretty crucial in order to avoid leakage.  Can you give a bit more detail of what you are aiming to do, please?

## Frequently Bought Together

- Torbeck B661AT W.C. Fill Valve Bottom Entry, one Colour
- TORBECK Spare Diaphragm Washer
- Merriway BH03350 Cistern WC Diaphragm Inlet Valve Washer to Fit Torbeck Valves,Silver

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**Shop now:** [https://www.desertcart.nz/products/53426266-w-c-fill-valve-bottom-entry](https://www.desertcart.nz/products/53426266-w-c-fill-valve-bottom-entry)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-22*