You are currently Logged Off
NIBCO Partner
AHR 2022
Plumbing Museum

Isolator E-X-P Logo

The Original Tankless
Water Heater Service Valves

Installation Instructions Button
Isolator E-X-P Product

Product Specs

  • Set of 2 Heavy Duty Forged Brass Ball Valves
  • Full Port Main Flow Channel
  • Large Drain Port Outlets
  • Color Coded Aluminum Handles
  • Uniquely Designed Lever/Wing Handle
  • Choice of 3 Pressure Relief Valves
  • FIP or SWT Connections
  • Sizes 3/4" – 1"


  • Premium Design
  • Easy Identification of Hot & Cold Valves
  • Quicker, Consistent Quality Installations
  • Fewer Leak Paths
  • Allows for Easy Cleaning, Flushing, & Diagnostic Testing
View Product Details
Connection Types
E-X-P Original (Lead-Free)
FIP Union × FIP, Sweat
E-X-P Original w/ Pressure Relief Valve (Lead-Free)
FIP Union × FIP, Sweat
Explore E-X-P Series
E-X-P Original
E-X-P E2
E-X-P E3
E-X-P Union Ball
E-X-P Ultra-Compact
E-X-P Combi
E-X-P Accessories