What products and equipment do you sell?

We have everything you need for professional pressure cleaning, including pressure washers for residential and commercial cleaning, surface cleaners for driveways, patios and decks, hoses, nozzles, guns, reels, pumps and accessories. We also custom build pressure cleaning trailers and skids to your exact specifications. All of our products are professional-grade and used by contractors, detailers and cleaning professionals across the country.

Do you build custom pressure cleaning trailers or skids?

Yep, we do. Our team of experts can design and build custom pressure cleaning trailers and skids that are tailor-made to your specific business requirements. You can choose your tank size and capacity, pump power and pressure rating, hose reel configuration and more. We'll build everything into a rugged, easy-to-use setup that is mounted on a trailer (or skid if you're on-site) and ready to go wherever you need to do your cleaning.

Can I finance my purchase?

Yes, you can. We've partnered with ClickLease to make financing simple and flexible for your equipment purchases. You can get instant approval and choose from customized payment plans for pressure washers, trailers, and other equipment, allowing you to equip your business with what you need without impacting your cash flow. You can also select Affirm or Klarna during checkout for smaller purchases, making it even easier to pay over time.

Do you offer technical support or setup assistance?

Yes, we do. Our team of PCE experts is available before and after your purchase to help you with whatever you need. We can offer personalized product recommendations, setup and configuration assistance, technical support to help you troubleshoot problems and the answers to any and all operational questions. You can reach our experts anytime via phone, chat or email for fast, effective support.

What is your return and refund policy?

Most new unopened merchandise is returnable within 30 days of delivery. Contact us prior to shipping any merchandise back to us for a Return Material Authorization (RMA). All returned merchandise must be shipped via UPS or FedEx. Shipping charges paid on the original order are non-refundable unless the merchandise is defective. Customers pay all return shipping charges. Opened, unused merchandise may also be returned within 30 days of delivery if in like-new condition, subject to a 25% restocking fee. Once fuel or oil is added to engine-powered equipment, it is considered used and is not returnable. Returns are not accepted on custom and special order products. Orders that have shipped can not be cancelled, and may be subject to an Order Return Fee if refused. Please see our Return & Refund Policy for more details.

What payment methods do you accept?

We accept all major credit and debit cards, including Visa, MasterCard, American Express, and Discover. You can also pay easily and securely using Google Pay, Apple Pay, or PayPal at checkout. We have flexible financing options available through Affirm and Klarna, and for larger business equipment orders, financing is available through our partner ClickLease.

Do I need a California-compliant pressure washer?

Yes. If you are using your pressure washer in California, it must be CARB compliant. California law requires that all pressure washers sold and operated in the state to adhere to strict emission standards set by the California Air Resources Board (CARB). The use of non-compliant equipment is subject to fines and confiscation by authorities. Purchasing a non-compliant pressure washer outside of California is not an option if you intend to use it in the state, as it will also need to be CARB compliant. PCE carries a complete line of CARB and EPA compliant pressure washers ready to go right out of the box and stay on the road. To learn all about California compliance, check your equipment, learn more about CARB and what they require, shop all compliant models, and even learn about financing options available to you, head to our California-Compliant Pressure Washers page.

Whisper Wash Spray Bar Adapter 3/8″ (ww400-3/8)

SKU: WW400-3/8

Get a tighter seal and smoother flow with the Whisper Wash 3/8″ Spray Bar Adapter. Built tough for pros, it installs fast, resists leaks, and keeps your surface cleaner running strong every time.

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$13.99

In Stock - Limited Inventory

Shipping Quote Required: Shipping calculated at checkout.

Want to pay with Affirm or Klarna?

Affirm financing is available. Please contact us directly, and our sales team will help you complete your purchase using Affirm. Call us at (800) 439-4465 for assistance.

Estimated delivery: September 30, 2026 – October 6, 2026

Want to pay with Affirm or Klarna?

Affirm financing is available. Please contact us directly, and our sales team will help you complete your purchase using Affirm. Call us at (800) 439-4465 for assistance.

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Description

Whisper Wash Spray Bar Adapter – (WW400-3/8)

This adapter is designed for a snug, leak-free fit for reliable performance with pressure washers. Keep water flow constant for consistent cleaning performance on every job. Durable, high-quality materials provide high-pressure and chemical resistance with everyday use. The Spray Bar Adapter 3/8″ installs easily, is simple to maintain and takes up minimal space for storage or transport with your surface cleaner.

Features:

Compatible with most 3/8″ pressure washer spray bars
Constructed of durable materials for wear and corrosion resistance
Delivers strong, consistent water flow for fast, efficient cleaning
Easy to install and requires minimal maintenance
Ideal for commercial or residential cleaning applications

Give your surface cleaner a boost and discover how a little part can make a big difference.

CAUTION: California Prop 65 Warning: This product can expose you to chemicals including lead. For more information, go to
www.P65Warnings.ca.gov.

Additional information

Weight	.25 lbs
Dimensions	4 × 2 × 2 in

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About brand

Whisper Wash – Industry-Leading Surface Cleaners

Founded in 1995 in St. Petersburg, Florida, Whisper Wash has been a trusted name in the pressure washing industry for over 27 years. As a family-owned business, we take pride in designing and manufacturing high-quality, American-made surface cleaners that set the standard for durability and performance.

Our proprietary Whisper Wash Swivel offers unmatched reliability and ease of maintenance with its rebuildable cartridge design. Built for efficiency and longevity, Whisper Wash remains the go-to choice for professional surface cleaning solutions.

Shipping & Delivery

Shipping Policy

Thank you for shopping with PCE! We’re committed to fast, reliable shipping across the U.S., with most orders processed within 1 -3 business days. Please note that delivery times may vary based on carrier schedules, weather, and order volume.

Some oversized or heavy items require LTL freight shipping. Freight orders may require a custom quote, and we will contact you to confirm shipping costs and delivery details before charging your card and processing the order.

For full details on processing times, shipping restrictions, tracking, and lost or damaged packages, please review our Shipping Policy.

Frequently Asked Questions (3)

How should I install it?

Q How should I install it?

A
Apply thread sealant or PTFE tape, hand-start, then tighten snugly. Do not overtighten.

Does it restrict water flow?

Q Does it restrict water flow?

A
No. It’s designed to maintain full flow for consistent cleaning performance.

Will this fit my Whisper Wash surface cleaner?

Q Will this fit my Whisper Wash surface cleaner?

A
Yes, it's made for the whisper wash spray bars. It may also fit other brand 3/8" spray bars but confirm your thread size before ordering.