Tempering Valves
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Tempering Valves for Eyewash Stations & Safety Showers
Emergency tempering valves are chosen by flow rate (GPM) — matched to the fixture(s) they supply. All valves below are ASSE 1071 certified and meet ANSI Z358.1 tepid water requirements (60–100°F). Pick the card that matches your fixture, or use the quick-links below if you already know your model.
💧 Eyewash & Eye/Face Wash Valves
Lower flow rates (~4–13 GPM) for single pedestal, wall, or faucet-mounted eyewash and eye/face wash stations.
Top Verified Best-Sellers
• Leonard TA-300-LF — 4 GPM (Most Popular)
• Guardian G6020 — 13 GPM
• Speakman SEF-TW — 8 GPM (Under-Sink/Faucet Kit)
🚿 Drench Shower & Combo Valves
High-capacity flow rates (~20–50 GPM) for emergency drench showers and shower/eyewash combination units.
Top Verified Best-Sellers
• Guardian G6040 — 50 GPM (High Capacity)
• Leonard TM-600-LF — 20 GPM (Most Popular)
• Bradley S19-2100 - 26 GPM
Quick Sizing Reference
| Application | Min. Required Flow (Z358.1) | Recommended Valve Capacity |
|---|---|---|
| Eyewash (single station) | 0.4 GPM | 4–13 GPM |
| Eye/Face Wash | 3.0 GPM | 8–13 GPM |
| Drench Shower (standalone) | 20.0 GPM | 20–30 GPM |
| Shower + Eye/Face Combo | 23.0 GPM | 30–50 GPM |
| Multiple fixtures, one valve | Sum of all GPMs | 50+ GPM |
Per ANSI/ISEA Z358.1, emergency fixtures must deliver tepid water (60–100°F) for a 15-minute continuous flush. Valves are universally compatible — Leonard, Guardian, Bradley, Speakman, and Haws valves all work with any brand fixture provided GPM and pipe size match.
How to Choose a Tempering Valve — Quick FAQ
Q: Do I have to match the tempering valve to my eyewash brand?
No. Any ASSE 1071 certified tempering valve works with any brand of emergency fixture as long as the flow rate (GPM) and pipe sizes match. A Leonard valve will feed a Haws shower, a Guardian valve will feed a Bradley eyewash, and so on. Plumbers and spec engineers often match brands for warranty simplicity or because the original drawing specified one brand — but mechanically, it's not required.
Q: How do I know which GPM I need?
Match the valve to the fixture it's feeding. Eyewash-only stations need ~4 GPM minimum. Eye/face wash stations need ~3 GPM. Drench showers need 20 GPM minimum. Combination shower + eye/face units need ~23 GPM minimum. If you're feeding multiple fixtures from one valve, add the required GPMs together and choose a valve rated for that total.
Q: What's the hot water supply requirement?
Most thermostatic mixing valves need a hot water supply between 120°F and 180°F, with 140°F recommended. If your supply is below ~120°F the valve won't be able to deliver tepid water reliably — this is the #1 install issue we see.
Q: What does ASSE 1071 certification mean?
ASSE 1071 is the U.S. standard specifically for emergency-fixture tempering valves. It requires a cold-water bypass (so cold water still flows if hot water fails) and a complete shutoff if cold water fails (preventing scalding). Every valve we sell is ASSE 1071 certified.
Q: Exposed valve vs. stainless cabinet — which do I need?
Most tempering valves install in a mechanical room or above a ceiling and don't need a cabinet. Choose a stainless steel cabinet only if the valve will be installed in a finished public space (corridor, lab, retail area) where a raw bronze valve would look out of place or where vandalism is a concern. Recessed cabinets are for in-wall installs; surface cabinets mount on the wall face.