Chicago Faucets STB-31-12-AB Lead-Free Angle stop, Brass

The Chicago Faucets STB-31-12-AB is a lead-free loose-key angle water supply stop with a OD Compression inlet and a 3/8" OD Compression outlet. It features a brass body. Rated to 40°F to 140°F. This model is certified lead-free for potable-water installations.

Chicago Faucets No. STB-31-12-AB, Angle Stop Fitting with ball valve, supply tube, and loose key handle. Chrome plated. 5/8" O.D. (1/2" nominal) female compression inlet. 3/8" O.D. female compression outlet. Slip wall flange. 3/8" O.D. x 20" bullnose flexible supply riser. ECAST® construction with less than 0.25% lead content by weighted average. This product is tested and certified to industry standards: ASME A112.18.1/CSA B125.1, Certified to NSF/ANSI 61, Section 9, California Health and Safety Code 116875 (AB1953-2006), Vermont Bill S.152, and NSF/ANSI 372 Low Lead Content.

Features

• Includes slip wall flange
• Ball valve
• 20" bullnose flexible supply riser, loose key handle
• ECAST® design provides durable cast brass construction with total lead content equal to or less than 0.25% by weighted average

Common Questions

What does "loose key" mean on this stop?

The handle is a removable tee-shaped key, not a permanently attached wheel or lever -- the public cannot turn the stop off without the matching key. That makes it the standard choice for restrooms and other public or multi-tenant spaces where an on-site fixture needs to stay tamper-resistant.

What connections does this stop have?

OD Compression on the inlet (to the building supply) and 3/8" OD Compression on the outlet (to the fixture supply line).

What is included in the box?

This stop ships as a complete fitting: Slip Wall Flange, 20" Flexible Supply Riser.

What pressure is this rated for?

20-125 PSI supply pressure, per Chicago's published rating for this model.

Specifications

• Type: Angle stop
• Outlet Size: 3/8"
• Body Material: Brass
• Pack Quantity: 1
• Warranty: Lifetime faucet; 1-year finish; 5-year cartridge
• MPN: STB-31-12-AB
• Temperature: 40°F to 140°F
• Certifications: ASME A112.18.1/CSA B125.1, NSF-372, NSF-61
• Lead-Free: Yes
• Includes: Slip Wall Flange;20" Flexible Supply Riser
• Inlet Connection: OD Compression
• Outlet Connection: OD Compression
• Body Pattern: Angle
• Handle Style: Loose Key
• Finish: Polished Chrome
• Max Operating Pressure (PSI): 125
• Lead Time (days): 5