Fortis 1/2" Thermostatic Rough-in Valve with Volume Control – VALVE690

Fortis VALVE690 1/2" Thermostatic Rough-in Valve with Volume Control is a solid-brass, high-flow rough valve engineered to protect against sudden temperature changes and to support multi-outlet custom showers. Designed for use behind Fortis thermostatic trims and compatible 1/2" systems, this stacked thermostatic valve delivers precise temperature control and progressive volume adjustment in a compact, easy-to-install body. 

With 1/2" NPT inlets and outlets and a flow rate up to 7.1 GPM at 60 PSI, VALVE690 is ideal for showers that use multiple components such as rain heads, hand showers, and body sprays. Each valve includes a thermo control cartridge, test plug, and step-by-step installation instructions, and is backed by Fortis’ limited lifetime warranty for residential use. 

Key features

• Thermostatic control: integrated thermo control cartridge maintains stable shower temperature and helps prevent sudden changes due to pressure fluctuations. 
• Volume control: progressive volume control lets you increase or decrease flow independently of temperature, for more comfortable and efficient use. 
• High-flow design: flows up to 7.1 GPM at 60 PSI, supporting multiple shower outlets when plumbed and balanced correctly. 
• 1/2" NPT connections: standard 1/2" NPT inlets and outlets simplify rough-in with common North American plumbing. 
• Solid brass construction: brass valve body provides durability, corrosion resistance, and reliable long-term performance. 
• Includes test plug: supplied test plug allows pressure testing and flushing before trim installation. 
• Step-by-step installation: clear instructions help installers set correct rough depth and orientation. 
• Compatible trims: works with Fortis / LaToscana thermostatic trims that specify VALVE690 as the matching rough valve. 

Specifications

• Model: VALVE690 – 1/2" thermostatic rough-in valve with volume control. 
• Material: solid brass. 
• Connections: 1/2" NPT inlets and outlets. 
• Flow rate: up to 7.1 GPM @ 60 PSI. 
• Valve type: stacked thermostatic valve with ceramic discs.
• Functions: independent temperature control and progressive volume control. 
• Use: shower / tub-shower systems (rough valve only; trim sold separately). 
• Standards: compliant with ASME A112.18.1 / CSA B125.1 and ASSE 1016; certified by CSA International. 
• Certifications: NSF lead-free, CEC compliant, CALGreen compliant, CSA compliant. 

Construction & benefits

• Shower safety: thermostatic technology helps maintain a steady outlet temperature even when household pressures fluctuate. 
• Multi-outlet support: high-flow design can feed multiple shower components when used with appropriate diverters and system design.
• Serviceability: cartridge-based design allows service and replacement from the finished side once the trim is removed. 
• Lead-free: NSF-certified lead-free construction suitable for potable water use. 

Downloads

• Specifications Data Sheet (PDF)
• Installation Guide (PDF)
• Care Instructions (PDF)

Warranty

• Mechanical warranty: limited lifetime warranty on mechanical parts for original residential purchaser; 1-year for commercial applications. 
• Finish warranty: limited lifetime warranty on finishes for residential use; 1-year for commercial. 
• See Fortis warranty documentation for full terms, exclusions, and claim procedures. 

Frequently asked questions

What does the VALVE690 rough-in include?

VALVE690 includes the solid brass thermostatic rough-in body, thermo control cartridge, test plug, and installation instructions; decorative trim is sold separately and must be ordered to match your desired style. 

Can VALVE690 feed more than one shower outlet?

Yes. With a flow of up to 7.1 GPM @ 60 PSI, VALVE690 can support multiple outlets when paired with appropriate diverters and piping, but the exact number depends on your chosen fixtures and local pressure. 

What piping connections are required?

The valve uses 1/2" NPT inlets and outlets, compatible with standard copper, PEX, or CPVC systems when used with appropriate adapters and fittings. 

Which trims are compatible with VALVE690?

Fortis and LaToscana thermostatic trims that specify VALVE690 as the matching rough, such as Quadro and Lady thermostatic shower/volume control sets; always confirm trim documentation before ordering.