GrohSafe 3.0 Pressure Balance Rough-In Valve For Showers, Flush Test Plug For Valve Body Without Cartridge, No-Fuss Flat Back Mounting For Easy Flush Install, Wide Rough-In Range 1 3/4 In To 2 3/4 In, Ships With Trim Not Included

3.0 Shower Rough-In Valve with Flush Plug and Flat Back
✔️ Flush test plug enables flushing with no cartridge; flat back fit

The 3.0 Shower Rough-In Valve is designed for quick, easy installations in tight spaces. Its flat back mounting allows flush attachment to cross braces for a secure, solid setup. Made from DZR brass for corrosion resistance, it includes a flush plug to test and flush lines before trim is installed. Cartridge sold separately. Color: Unfinished.

✅ Flush plug allows valve body to be tested and flushed without the presence of the valve cartridge (ships with trim, NOT INCLUDED)
✅ Flat back mounting lets the valve sit flush against a cross brace for solid installation
✅ Wide rough-in range from 1-3/4 in to 2-3/4 in (finished wall to back of valve)
✅ Exclusive plaster guard protects the valve and guides installation
✅ DZR brass body resists corrosion for durability
✅ Stainless steel fixation ring keeps flush plug and cartridge in place without screws
✅ Cartridge sold separately
✅ Color: Unfinished

💡 What is a shower rough-in valve and why is the flush test plug handy for installation?

Short answer: A rough-in valve provides the mounting and plumbing interface for the shower valve before the finished trim is added.

- Handy for confirming line cleanliness and leak testing before trim install
- Helps ensure proper water flow paths and alignment with the finished wall
- Works with standard cross braces for solid back mounting