SKU: 57619194967

Guardian G6040 Thermostatic Mixing Valve, 50 Gallon/189 Liter Capacity - Replaces Guardian G3800LF

Sale price$465.19 Regular price$516.88
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Guardian G6040 Thermostatic Mixing Valve, 50 Gallon/189 Liter Capacity - Replaces Guardian G3800LFThis unit is a direct replacement for Guardian's classic G3700LF Thermostatic Mixing Valve. Application: Thermostatic mixing valve to blend hot and cold water to deliver tepid water. Valve has flow capacity of 50 gallons (189 liters) per minute at 30 PSI (2. 1 bar) pressure drop. Valve can be used to supply emergency shower or combination safety station. Depending on water supply size and pressure, valve can supply multiple units. Mounting: Valve

This unit is a direct replacement for Guardian's classic G3700LF Thermostatic Mixing Valve.

 

Application: Thermostatic mixing valve to blend hot and cold water to deliver tepid water. Valve has flow capacity of 50 gallons (189 liters) per minute at 30 PSI (2.1 bar) pressure drop. Valve can be used to supply emergency shower or combination safety station. Depending on water supply size and pressure, valve can supply multiple units.

Mounting: Valve inlets can be positioned on top, back or bottom of valve. Outlet can be on top or bottom. Valve can be configured in the field for any mounting position. Furnished with heavy duty stainless steel mounting bracket.

Temperature Control: Valve has precision thermal actuator that senses incoming water temperature and automatically blends water to preset temperature. Valve is factory set to deliver 85°F (29°C) water. Temperature of tepid water can be adjusted as required and then locked. Furnished with dial temperature gauge as standard to monitor temperature of tepid water.

Cold Water Bypass: If the supply of hot water is restricted or interrupted, an internal bypass allows the valve to deliver cold water only. In bypass mode, the valve delivers 38 GPM (144 L/min) at 30 PSI (2.1 bar) pressure drop.

Hot Water Shutoff: Valve has internal PTFE valve seat. If the supply of cold water is interrupted, the valve will close completely and not deliver any water at all, eliminating any possibility of scalding.Flow Capacity: Refer to table below for flow capacity of valve at specified pressure drops. 

Checkstops/Filters: Each inlet has a lockable shutoff valve for maintenance, internal check valve to prevent backflow and stainless steel basket filter to remove debris from the water flow.

Construction: Valve meets the requirements of the U.S. Safe Drinking Water Act as lead-free.

Inlet/Outlet: 1” NPT female inlets and 1-1/4” NPT female outlet as standard.

Quality Assurance: Valve is ASSE certified under ANSI/ASSE 1071. Valve is fully assembled and factory tested prior to shipment.

Water Pressure/Temperature Requirements

Supply Pressure: Maximum incoming water pressure is 125 PSI (8.6 bar). Pressure of hot and cold water supplies can vary up to 25% and still deliver the flow and temperature required by ANSI/ASSE 1071.

Hot Water Supply Temperature: Incoming hot water temperature range is 120° - 180°F (49° - 82°C). Guardian recommends that the hot water temperature not exceed 140°F (60°C).

Cold Water Supply Temperature: Incoming cold water temperature range is 40° - 70°F (4° - 21°C). Cold water temperature must be at least 10°F (5.6°C) less than the temperature of the delivered tepid water.

Tepid Water Temperature: Temperature of tepid water is adjustable within a range of 65° - 95°F (18° - 35°C) and then locks in position. High temperature limit stop is set at 90°F (32°C) to prevent misadjustment.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57619194967

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4.9 ★★★★★
Based on 16 reviews
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J
Verified Purchase
Jenni
Charlottesville, US
★★★★★ 4
Great but had a problem
It’s great except you have to finagle the darn thing for it to charge. Sometimes I have to use something to get it to lean just right so it charges. Otherwise it’s spectacular and easy to use! Love the foil cutter tbh, that works like a gem!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
D
Verified Purchase
Denyce Schoemehl
Belleville, US
★★★★★ 5
Got it fast and works great
Very nice looking and works fast!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
So easy
I love it
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Reviewed in the United States on June 3, 2026
K
Verified Purchase
k. oakes
Omaha, US
★★★★★ 4
Nice tool, but with a 4 year life span.
I bought this on Nov. 2020, after hand surgery left me temporarily unable to do simple yet necessary tasks- like opening a wine bottle. 🤪 It's compact, nicely designed, and reliable. I kept it plugged in all the time with no issues. The only negative so far is the blue light which stays on whenever the unit is in the base, fully charged or not. (Not a fan of the many small yet bright lights from all appliances! Placing a Talking Yoda figurine in front of it blocked enough of the light to satisfy me). I found it easy to use and appreciated the foil cutter. Worked well on all types of corks. Flash forward to spring 2024... Despite the constant charging, the corkscrew dies at maybe a half inch into the cork. Just slows down and dies. Having read earlier reviews, I may try to crack it open and replace the battery. But ultimately, having regained my hand strength back, I'm more likely to go back to an old fashioned, reliable, hand operated corkscrew and celebrate the loss of weird lights and needed electricity. Conclusion: unless you are recovering from hand surgery, just get a good quality non- electric corkscrew and use it for 75 years (optimistically). Best deal ever. And you can take it camping too.
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Reviewed in the United States on July 2, 2024
L
Verified Purchase
ladymary
San Leandro, US
★★★★★ 5
Modern Solution and a Perfect Gift
Style: Gift Style, Style: Gift Style
As someone who has struggled many times with opening wine bottles, this is a great thing to get. The build of the opener is a modern stainless steel look, matching perfectly with most modern appliances. The device is light, much lighter than I thought it would be, but never felt flimsy. The operation was very simple, not even requiring the use of the instruction manual to understand how it functions. The ease with which it works was surprising but very relieving. The corkscrew is also strong enough to work without intervention, only requiring a firm grip on the opener and bottle. It comes with other useful bits, especially the foil cutter, which worked with minimal fuss or effort. The stand is a bit light, but it works great at organizing the extras in one place. To top it all off, the pricing is great for what you get. It was a great value for either gifting, or personal use; overall, I couldn't be happier and can absolutely recommend this.
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Reviewed in the United States on December 11, 2025

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