
0066100 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.95 | Condition is New, Watts 100XL 150PSI 3/4" Self Closing Temperature & Pressure Relief Valve, shipping cost = $6.75 | 100.0% |
![]() | $19.99 | Condition is New, WATTS 100XL REGULATOR 3/4" 210F TEMPERATURE PRESSURE RELIEF VALVE AUTOMATIC 150#, FREE SHIPPING | 99.3% |
![]() | $15.00 | Condition is New, WATTS TEMPERATURE & PRESSURE RELIEF VALVE 100XL, shipping cost = $5.72 | 100.0% |
![]() | $15.95 | Condition is New, WATTS BLUE RIBBON MODEL NO. 100XL, shipping cost = $5.25 | 99.7% |
![]() | $20.00 | Condition is New, Watts 3/4 100XL 150/210, FREE SHIPPING | 100.0% |
![]() | $20.99 | Condition is New, Watts 100XL 3/4" MNPTx FNPT Brass Self-Closing Temp & Pressure Relief Valve, FREE SHIPPING | ![]() |
![]() | $11.99 | Condition is New, Watts 100XL 150PSI 3/4" Self Closing Temperature & Pressure Relief Valve, shipping cost = $10.99 | ![]() |
![]() | $13.50 | Condition is New, WATTS 100XL Temperature Pressure Relief Valve 3/4" -3/4" New Old Stock, shipping cost = $8.13 | 100.0% |
![]() | $22.99 | Condition is New, Watts Regulator Co. 100XL4 100XL 4 3/4 150-210 RELIEF VALVEF, FREE SHIPPING | 100.0% |
![]() | $18.25 | Condition is New, WATTS 100XL Temperature Pressure Relief Valve 3/4" -3/4" NOS In Original Box, shipping cost = $6.58 | 100.0% |
![]() | $24.99 | Condition is New, WATTS 100XL Temperature Pressure Relief Valve 3/4" -3/4" New Old Stock., FREE SHIPPING | 99.5% |
![]() | $18.00 | Condition is New, Watts, 3/4" Temperature & Pressure Relief Valve, With Long Shank Thermostat, shipping cost = $8.00 | 100.0% |
![]() | $21.16 | Top Pick! Condition is New, Watts 100XL-4 M7 3/4" Blue Ribbon Temperature and Pressure Relief Valve, shipping cost = $6.99 | 99.9% |
![]() | $20.00 | Condition is New, WATTS 3/4 LF-LL100XL-150 T&P SAFETY RELIEF VALUE NEW, shipping cost = $9.14 | 100.0% |
![]() | $20.00 | Condition is New, NEW Watts No. 100XL 0066100 Temperature and Pressure Relief Valve 3/4" Bronze, shipping cost = $9.42 | 100.0% |
![]() | $20.00 | Condition is New, WATTS BLUE RIBBON MODEL NO. 100XL 3/4" SET 150 PSI RELIEF VALVE #810, shipping cost = $11.50 | 100.0% |
![]() | $32.00 | Condition is New, Watts Sea 66100 100XL-4 3/4 150 Psi 100Xl-4 T P Relief Valve, FREE SHIPPING | 100.0% |
![]() | $29.99 | Condition is New, Watts Regulator 100XL Blue Ribbon Temperature and Pressure Relief Valve, shipping cost = $5.50 | 100.0% |
![]() | $34.00 | Condition is New, WATTS 0066100 VALVE 150PSI NSMP, FREE SHIPPING | 99.8% |
![]() | $22.99 | Condition is New, Watts No 100XL Combination Pressure Temperature Relief Valve 3/4 Male 3/4 Female, shipping cost = $14.46 | 75.0% |
![]() | $39.41 | Condition is New, Watts 100XL-4-15 100XL-4-15 T&P RELIEF VALVE 3/4" 150 PSI 4" ST, FREE SHIPPING | 97.8% |
![]() | $42.00 | Condition is New, N45-024 381 Watts 3/4" Temp & Pressure Automatic Reseating Valve, FREE SHIPPING | 100.0% |
![]() | $42.25 | Condition is New, Watts Sea 66100 100XL4 3/4" 150 Psi 100Xl4 T & P Relief Valve, FREE SHIPPING | 99.6% |
![]() | $42.29 | Top Pick! Condition is New, Watts 66100 Bronze 3/4" Pressure Relief Valve, 150 PSI - Durable & Efficient, FREE SHIPPING | 99.3% |
![]() | $43.69 | Condition is New, Efficient 3/4" Bronze T&P Relief Valve - Watts SEA 66100 100XL-4, 150 PSI, FREE SHIPPING | 98.5% |
![]() | $24.20 | Condition is New, WATTS 0066100 100XL 3/4 Temp and Pressure T&P Relief Valve 150PSI 4 STEM, shipping cost = $21.55 | 0.0% |
![]() | $25.00 | Condition is New, LOT OF 2 Watts 100XL 150PSI 3/4" Temperature & Pressure Relief Valves, shipping cost = $30.00 | ![]() |
![]() | $55.77 | Condition is New, Watts LF100XL-150210 T&P Relief Valve 3/4" Bronze 150/210 PSI, FREE SHIPPING | ![]() |
![]() | $60.99 | Condition is New, WATTS 100XL SERIES TEMPERATURE AND PRESSURE RELIEF VALVE WITH 4-IN. SHANK, 3/4 , FREE SHIPPING | 98.5% |
![]() | $58.39 | Top Pick! Condition is New, Watts 100XL-4 3/4" 150 PSI Relief Valve, shipping cost = $8.00 | 95.2% |
![]() | $69.98 | Condition is New, *3PACK* WATTS Temperature & Pressure Release Valve 3/4 LF LLL100XL 150/210, shipping cost = $26.95 | 98.2% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $8.00 | Condition is New – Open box, WATTS 100XL Temperature & Pressure Relief Valve 3/4 Male Inlet 3/4 Female Outlet, shipping cost = $9.35 | 94.9% |
![]() | $12.50 | Condition is New – Open box, WATTS 100XL Temperature Pressure Relief Valve 3/4" -3/4" NOS In Original Box, shipping cost = $7.50 | 100.0% |
![]() | $19.99 | Condition is New – Open box, Watts 100XL: 3/4" Water Heater Temperature And Pressure Relief Valve, FREE SHIPPING | 99.7% |
![]() | $19.99 | Condition is New – Open box, WATTS 100XL Temperature Pressure Relief Valve 3/4" -3/4" , FREE SHIPPING | 99.7% |
![]() | $19.99 | Condition is New – Open box, Watts Regulator 100XL Blue Ribbon Temperature and Pressure Relief Valve Nos, shipping cost = $4.99 | 99.8% |
![]() | $18.00 | Top Pick! Condition is New – Open box, Watts 0066100 100XL 150 3/4" Self Closing Temperature / Pressure Relief Valve, shipping cost = $7.90 | 99.5% |
![]() | $19.99 | Condition is New – Open box, Watts 100XL-4 Blue Ribbon Bronze Threaded Relief Valve 150psi 3/4in, shipping cost = $6.24 | 99.8% |
![]() | $17.00 | Condition is New – Open box, WATTS BLUE RIBBON MODEL NO. 100XL, shipping cost = $9.06 | 100.0% |
![]() | $17.98 | Condition is New – Open box, Watts 100XL 150PSI 3/4" Self Closing Temperature & Pressure Relief Valve, shipping cost = $9.02 | 100.0% |
![]() | $19.00 | Condition is New – Open box, Watts 3/4 in. Brass Temperature and Pressure Relief Valve 100XL - Brand New, shipping cost = $7.60 | 100.0% |
![]() | $9.99 | Condition is New – Open box, Watts Regulator Model: 100XL Pressure Relief. New Old Stock , shipping cost = $20.96 | 100.0% |
![]() | $31.12 | Condition is New – Open box, WATTS 100-XL-150 3/4" Brass Self Closing Temperature & Pressure Relief Valve, FREE SHIPPING | 99.9% |
![]() | $24.95 | Condition is New – Open box, Watts 100XL 150 PSI Auto Reseating Comb T & P Relief Valve, shipping cost = $8.75 | 99.1% |
![]() | $24.95 | Condition is New – Open box, OEM Watts No. 100XL Temperature and Pressure Relief Valve 3/4" Bronze, shipping cost = $9.94 | 100.0% |
![]() | $27.99 | Condition is New – Open box, WATTS 100-XL-150 3/4" Brass Self Closing Temperature & Pressure Relief Valve, shipping cost = $8.99 | 99.6% |
![]() | $24.62 | Top Pick! Condition is New – Open box, WATTS 0066100 / 0066100 (NEW IN BOX), shipping cost = $12.90 | 99.7% |
![]() | $30.00 | Condition is New – Open box, Watts 3/4" 100XL 150psi/210 F Water Heater Temperature Pressure Relief Valve, shipping cost = $9.02 | 98.7% |
![]() | $28.43 | Top Pick! Condition is New – Open box, WATTS 100XL-150-3/4 / 100XL15034 (NEW IN BOX), shipping cost = $12.90 | 99.7% |
![]() | $37.99 | Condition is New – Open box, WATTS 4X563 100XL 150PSI 3/4" Nos Surplus, shipping cost = $4.99 | 99.8% |
![]() | $34.99 | Top Pick! Condition is New – Open box, WATTS 100XL 3/4" Temp & Press Relief Valve 4" insertion set at 125 lb. 210F, shipping cost = $9.56 | 99.7% |
![]() | $47.99 | Condition is New – Open box, Watts 3/4 Lf L100xl 150-210 Temperature Pressure Relief Valve, Copper, shipping cost = $9.99 | 99.6% |
![]() | $28.00 | Top Pick! Condition is New – Open box, WATTS 0066100 / 0066100 (NEW IN BOX), shipping cost = $36.56 | 99.2% |
![]() | $75.00 | Top Pick! Condition is New – Open box, Watts 100XL-4 T&P Relief Valve 3/4" 150 PSI 210 F 4X563 New Surplus, shipping cost = $40.00 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $15.00 | Condition is New other (see details), WATTS BLUE RIBBON MODEL AUTOMATIC RESEATING TEMPERATURE & PRESSURE RELIEF VALVE, FREE SHIPPING | 98.8% |
![]() | $36.99 | Top Pick! Condition is New other (see details), WATTS No. 100XL 1910350 Rev. 0818 PRESSURE RELIEF VALVE N-868, FREE SHIPPING | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $14.99 | Top Pick! Condition is Open box, Watts Pressure Relief Valve 3/4" 100XL 150 PSI 3" Extension Brass New, shipping cost = $4.99 | 99.2% |
![]() | $22.99 | Condition is Open box, Watts Brass & Tubular 3/4 LL100XL-DP-150/210 LL100XL-150/210 T & P Relief, FREE SHIPPING | 99.7% |
![]() | $25.00 | Condition is Open box, ONE WATTS 100XL 2-3"/3-4" T&P Temperature Pressure Relief Valve 210 deg F NOS, FREE SHIPPING | 100.0% |
![]() | $15.00 | Condition is Open box, Watts T&P Temperature WATER HEATER Pressure Relief Valve 100XL 150psi 4" Probe , shipping cost = $13.02 | 100.0% |
![]() | $16.14 | Condition is Open box, WATTS Water Heater Temperature And Pressure Relief Valve 100XL 150psi 4" probe , shipping cost = $15.10 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $14.99 | Condition is Used, Watts 3/4" 100XL 150 PSI 210 Degree Water Valve *FREE SHIPPING*, FREE SHIPPING | 99.7% |
![]() | $7.00 | Top Pick! Condition is Used, Watts No. 100XL Pressure Relief Valve 3/4" 150 PSI 210 Degrees , shipping cost = $10.69 | 100.0% |
![]() | $14.80 | Condition is Used, Watts 3/4" 100XL 150 psi Pressure release valve, shipping cost = $8.22 | 100.0% |

The Watts 0066100 100xl-150 3/4 is a versatile and powerful water heater designed for residential and light commercial applications. This model is a 3/4 horsepower, 115 Volt, 150 gallon per hour (GPH) unit, making it suitable for providing hot water to larger homes or establishments with high hot water demand.
The heater features a copper heat exchanger, which offers excellent thermal conductivity and durability, ensuring efficient and consistent water heating. The unit is also equipped with a high limit thermal switch and a pressure relief valve, providing an additional layer of safety and peace of mind.
The Watts 0066100 100xl-150 3/4 water heater is designed with a compact size, making it easy to install in tight spaces. It measures 19.5 inches by 19.5 inches by 33 inches (LxWxH), and weighs approximately 110 pounds. The unit is also equipped with a digital temperature control, allowing for precise temperature settings and easy adjustments.
The exterior of the heater is constructed with a heavy-duty, powder-coated steel cabinet, which not only provides excellent protection against rust and corrosion but also adds to the unit's overall aesthetics. The unit also comes with a 6-foot power cord, making it easy to connect to an electrical outlet.
The Watts 0066100 100xl-150 3/4 water heater is Energy Star certified, which means it meets the strict energy efficiency guidelines set by the U.S. Environmental Protection Agency. This not only helps reduce energy consumption and lower utility bills but also contributes to a smaller carbon footprint.
The unit is also backed by a 6-year limited warranty on the heat exchanger and a 1-year limited warranty on parts, providing customers with peace of mind and assurance of the product's quality and reliability. Overall, the Watts 0066100 100xl-150 3/4 water heater is a high-performing and energy-efficient solution for providing hot water to larger homes or small businesses.
The Watts 0066100 100xl-150 3/4 hp submersible water pump is a commonly used pump for various applications such as irrigation, water transfer, and dewatering. Here are some pros and cons of buying this pump:
Pros:1. Powerful: With a power output of 100xl-150 hp, this pump can handle large volumes of water and is suitable for heavy-duty applications.
2. Submersible design: The submersible design of this pump allows it to be installed directly into the water source, reducing the need for priming and eliminating the need for a separate basin or sump pit.
3. Versatile: This pump can be used in a variety of applications, including irrigation, water transfer, and dewatering.
4. Durable: The pump is constructed with high-quality materials, including cast iron and stainless steel, making it durable and long-lasting.
5. Energy-efficient: The pump is designed to be energy-efficient, reducing operating costs and minimizing the environmental impact.
Cons:1. Price: The cost of this pump is higher than some other models on the market due to its high power output and durable construction.
2. Size and weight: This pump is larger and heavier than some other models, requiring a larger installation space and more rigorous transportation logistics.
3. Complex installation: Due to its size and power output, this pump may require professional installation to ensure proper operation and safety.
In conclusion, the Watts 0066100 100xl-150 3/4 hp submersible water pump is a powerful and durable pump that is suitable for heavy-duty applications. Its submersible design and versatility make it a popular choice for irrigation, water transfer, and dewatering projects. However, its high cost, size, and weight, as well as the complex installation process, may be drawbacks for some buyers.
Recommendation: If you have a large water transfer or irrigation project with heavy water volume requirements, or if you need to dewater a large area, the Watts 0066100 100xl-150 3/4 hp submersible water pump is a great option. However, if you have a smaller project or a limited budget, there may be more cost-effective and easier-to-install options available. It is recommended to consult with a professional pump supplier or installer to determine the best pump for your specific application.
Details:
This valve is same rated and CSS listed. Includes test lever and stainless steel spring. Brass body construction. Prevents water heater from blowing up.
I have a lot of resources to get the shipping at best price. ANSI z21.22 certified. Required safety device on all water heaters. It features a brass body with not male inlet and female outlet connections, unique thermostat special Thermos-bonded coating, test lever.
Features unique thermostat with special Thermos-bonded coating. About me: I buy and list dead stock. These parts/equipment are new, but have been unsold for 5 years. Pressure relief is set at 150 psi.
Temperature relief is 210 degree f c. Same rated, CSS listed.
specifications maxohvac:
- brand: Watts
- mpn: 0066100
- model: 100xl-150 3
- part type: Hvac
- upc: 098268000016
offer maxohvac:
- started: february 11, 2025
- options: ship-to-home
- best offers: true
- sold #: 21
- prices: $7.00–$75.00
- item condition:
- New
- New – Open box
- New other (see details)
- Open box
- Used
- availability: in stock
returns maxohvac:
- policy: no returns
payments maxohvac:
- other
- credit card: mastercard
- wallet: google-pay
shipping maxohvac:
- type: calculated
- transit: 3-9 days
- service: usps ground advantage
- carrier: usps
- class: standard
seller maxohvac:
- city: kansas city, missouri
- # reviews: 0
- rating: 0.0%
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
































































