---
product_id: 10002356
title: "Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038"
brand: "sloan"
price: "¥7017"
currency: JPY
in_stock: true
category: "Sloan"
url: https://www.desertcart.jp/products/10002356-sloan-regal-a-38-a-water-closet-diaphragm-assembly-kit
store_origin: JP
region: Japan
---

# 3.5 Gallons Per Flush (GPF) precision 2-inch threaded inlet/outlet connections Durable natural rubber diaphragm + brass bypass Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038

**Brand:** sloan
**Price:** ¥7017
**Availability:** ✅ In Stock

## Summary

> 🚽 Flush Smarter, Not Harder — Upgrade to Regal Reliability!

## Quick Answers

- **What is this?** Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038 by sloan
- **How much does it cost?** ¥7017 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/10002356-sloan-regal-a-38-a-water-closet-diaphragm-assembly-kit)

## Best For

- sloan enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Natural rubber diaphragm paired with brass bypass ensures reliable, leak-free operation for years.
- • **Seamless Compatibility:** Specifically engineered for Regal Flushometers—easy, hassle-free replacement with OEM Sloan quality.
- • **Trusted Brand Assurance:** Backed by Sloan’s 3-year limited warranty and industry-leading craftsmanship.
- • **Precision Water Efficiency:** Optimized 3.5 GPF flush reduces waste without compromising performance—save water, save costs.
- • **Sustainability Meets Performance:** EPA and WaterSense certified to support eco-conscious facility management.

## Overview

The Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit is a premium OEM replacement part designed for Regal Flushometers, delivering a precise 3.5 GPF flush. Featuring a durable natural rubber diaphragm and brass bypass, it ensures consistent, water-efficient performance while meeting EPA and WaterSense standards. With 2-inch threaded connections and backed by a 3-year warranty, this kit guarantees a quick, reliable repair that extends the life of your commercial restroom fixtures.

## Description

desertcart.com: Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038 : Tools & Home Improvement

## Features

- WATER CLOSET DIAPHRAGM ASSEMBLY: Our Regal water closet diaphragm assembly kit is intended to replace worn or end of service life assemblies. The replacement assembly has a natural rubber diaphragm and brass bypass that will ensure an accurate flush every time.
- COMPATIBILITY CHECK: This water closet diaphragm assembly is specifically designed to work as a replacement for our line of Regal Flushometers (Clamshell # 33010045). Regal water closet diaphragm replacements come in 1.6 gpf, 3.5 gpf, and 4.5 gpf. Always make sure to check part compatibility to ensure a quick, hassle-free repair.
- INTELLIGENT DESIGN: Our Diaphragm Assemblies are specially crafted to limit water closet and urinal water consumption. Worn-out diaphragms can lead to water waste or incorrect flushing amounts. Optimize your flushometers to reduce costs, preserve water, and promote sustainability.
- SLOAN GENUINE PARTS: Extend the life of your Sloan products. Our products perform at their highest levels when maintained exclusively using Sloan Genuine Parts. We offer the largest selection of best-in-class parts, manufactured and tested to Sloan specifications, specifically designed for the most reliable commercial restroom products. This means fewer repairs and protects your investments.
- WATER CONNECTS US: Every day around the world, Sloan products connect the systems that manage our planet's most precious resource. As the world's leading manufacturer of commercial plumbing systems, we've spent more than a century pioneering smart, water-saving restroom solutions that are built to last a lifetime.
- DUAL PART NUMBER LISTING: This product is available under two part numbers: 3301038 and 33010045. Both are the exact same item with identical specifications - if you have been sourcing either part number, this listing covers both.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000UFW78S |
| Best Sellers Rank | #8,233 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Toilet Flush Valves |
| Brand Name | Sloan |
| Connector Type | Threaded |
| Customer Reviews | 4.7 4.7 out of 5 stars (235) |
| Exterior Finish | Chrome |
| Global Trade Identification Number | 00671254039445 |
| Included Components | kitchen-sink-installation-parts-and-kits |
| Inlet Connection Size | 2 Inches |
| Inlet Connection Type | The inlet connection type for the Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit is likely to be a 'Diaphragm' connection. |
| Item Dimensions | 3 x 3.3 x 3.3 inches |
| Item Type Name | 3.5 GPF Repair Kit |
| Item Weight | 0.01 Ounces |
| Manufacturer | Sloan Valve Co. |
| Manufacturer Part Number | A-38-A |
| Manufacturer Warranty Description | 3 Year Limited Warranty |
| Material Type | Brass, Rubber |
| Model Number | 33996 |
| Number of Ports | 2 |
| Outlet Connection Size | 2 Inches |
| Outlet Connection Type | Threaded |
| Set Name | Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit |
| Size | 3.5 GPF |
| Specification Met | EPA, WaterSense |
| Thread Size | 2 inches |
| Thread Type | National Pipe Thread (NPT) |
| UPC | 783961315771 671254039445 784497874817 |
| Unit Count | 1.0 Count |
| Valve Type | Diaphragm Valve |

## Product Details

- **Brand:** Sloan
- **Exterior Finish:** Chrome
- **Inlet Connection Size:** 2 Inches
- **Item dimensions L x W x H:** 3 x 3.3 x 3.3 inches
- **Material:** Brass, Rubber
- **Number of Ports:** 2
- **Outlet Connection Size:** 2 Inches
- **Outlet Connection Type:** Threaded
- **Specification Met:** EPA, WaterSense

## Images

![Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038 - Image 1](https://m.media-amazon.com/images/I/61xoMJ2Qp1L.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Questions & Answers

**Q: My flushometer currently has a A-36-A diaphragm kit in it.I am looking to make it more economical.Will the A-38-A do so?Lower the standing water level**
A: Nick B said on November 23, 2014  |  Edit A-36A USE -4.5 GALLONS PER FLUSH /16.9LITERS PER FLUSHA- 38 A USE 3.5 gpf/13.2 Lpf one gallon less

**Q: does this only work for Sloan urinals, Im looking for Crane Urinal parts. will this work?**
A: this is not for other brands, only sloan

**Q: Does this include all of the "guts" needed to rebuild a urinal flush valve?**
A: Yes, except for the vacuum breaker, and anything below that. Also the shut off itself, which may or may not need replacement.

**Q: Does this fit the gem 2?**
A: do not think so, the gem is a cartridge right?

## Frequently Bought Together

- Sloan Regal A-38-A Water Closet Diaphragm Assembly Kit 3.5 GPF - Natural Rubber Diaphragm with Brass Bypass | For use with Regal Flushometers | OEM Sloan Parts, 3301038
- Sloan Regal V-551-A Vacuum Breaker Repair Kit - Replace Broken or Malfunctioning Vacuum Breakers | For use with Regal Flushometers | OEM Sloan Parts, 3323192
- Sloan A-71 Inside Cover for Sloan Flushometers - Compatible with Royal, Regal, Series 900 Hydraulic and PWT Series 600 Flushometers, Original OEM Parts, 0301168

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-07-07*