Phone 800-280-4053 | Text 858-688-1646 | Email

The official factory-authorized national distributor of parts for Sigma faucets and shower systems.
We offer the largest selection of original Sigma parts with the best shopping experience.

Parts for Shower Valves

Sigmatherm® 1/2" Thermostatic Valve

Simply Safe® Thermostatic Valve

Parts for Tempress II Pressure Balance Valve

Sigmatherm® 1/2" Thermostatic Shower Valves

3/4" Thermostatic Shower Valve

1" Thermostatic Shower Valve

Parts Categories

Volume Control Cartridges

Thermostatic Shower Cartridges

Miscellaneous Cartridges


Handles and Levers


Handle Base Rings

Shower Heads

Shower Wands

Handheld Shower Wall Brackets

Shower Cover Plates

Shower Grab Bars

Shower Slidebars



Tub Drains


In-line Shut-Off Valves


Square Tubes

All-Thread Tubes

Stem Adapter

Pointer Assemblies


Shop with Confidence

Elegant Our products feature elegant styling by expert designers.
Precise Engineering Our engineers precisely specify each product.
Expert Craftsmanship Highly-skilled craftsmen, with many years of experience, work to make each product an object of beauty.
Solid Brass Our products are made from premium quality solid-brass components from Italy, Germany, and United States of America.
Precision Our faucets and shower systems feature precisely-machined valves from Germany and France.
Finest Finishes We offer a variety of the finest American metal coatings and hand-polished finishes.
Highest Quality We only sell the highest quality products which are covered by our warranty.
Industry Standards Our products are certified to meet or exceed the following codes and standards: ASME A112.18.1/CSAB 125.1-2011.
Brand New All our products are brand new and covered by our return policy.
Secure Transactions Our website is certified Level 1 PCI DSS compliant. The Payment Card Industry Data Security Standard (PCI DSS) is a security standard for organizations that handle credit and debit card information.
Free Shipping Free shipping on most orders over $50 within the continental United States.
No Sales Tax No sales sales tax, except in California.
Free Support We are available to assist you with your purchase — and we are here to support you after you receive your product.
100% Satisfaction We are committed to ensuring you are 100% satisfied with our products and service.
Our products are designed, engineered, and built in United States of America.

Sigma Faucet Parts: We are the factory-authorized, national, master distributer of original parts for Sigma faucets and shower systems. Proof of original purchase may qualify for special discounts.

Why Shop with Us


Official Sigma Agent

We are the official agent of Sigma and authorized national distributor of Sigma faucet parts.


Genuine Sigma Parts

We carry factory original Sigma faucet parts going back up to 25 years, even difficult-to-find parts.


Knowledgeable Assistance

We specialize in Sigma faucets and shower systems. We have the knowledge to help you.

Need Assistance?

Call us, or text or email us photos of what you need. Please provide the age of your faucet and your full contact information.