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Water Heater & Boiler Repair

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Union, 2"FPT X 2"Swt Insulated
Mark's Part: 33871
List Price: $ 40.41 -15%
Web Price:$ 34.33 EA
Screw-In Water Heater Element, 4500 Watts,240V,13-1/2" Length
Mark's Part: 10528
List Price: $ 11.93 -15%
Web Price:$ 10.14 EA
Watts 3/4" MPT Vacuum Relief Valve
Mark's Part: 13757
List Price: $ 61.16 -11%
Web Price:$ 54.46 EA
24" Waterflex Water Connector, 3/4" FPT x 3/4" FPT
Mark's Part: 27753
List Price: $ 18.63 -15%
Web Price:$ 15.83 EA
18" Waterflex Water Connector, 3/4" FPT x 3/4" FPT
Mark's Part: 27752
List Price: $ 30.96 -15%
Web Price:$ 26.30 EA
Watts LF40XL-5 3/4" M x 3/4" F T&P Safety Relief Valve
Mark's Part: 36233
List Price: $ 424.46 -4%
Web Price:$ 407.35 EA
Hoffman #79 Low Pressure Water Main Air Vent Valve
Mark's Part: 27183
List Price: $ 243.68 -6%
Web Price:$ 229.02 EA
Complete Haymaker Descaler Kit
Mark's Part: 35698
List Price: $ 239.56 -6%
Web Price:$ 225.15 EA
Screw-In Water Heater Element, 4500 Watts,240V,12-1/2" Length
Mark's Part: 10529
List Price: $ 15.45 -15%
Web Price:$ 13.13 EA
24" Copper Waterflex Water Heater Connector, 3/4" FPT x 3/4" FPT
Mark's Part: 09878
List Price: $ 27.01 -15%
Web Price:$ 22.95 EA
Sharkbite Flexible Coupling Hose 3/4" Sb X 3/4 MPT X 12"
Mark's Part: 31753
List Price: $ 28.61 -15%
Web Price:$ 24.31 EA
Union, 1"FPT X 1"Swt Insulated
Mark's Part: 33868
List Price: $ 11.10 -18%
Web Price:$ 9.10 EA
Legend 1/2" MIP x SWT Male Forged Steel Pipe Thread to Copper Solder Joint
Mark's Part: 33874
List Price: $ 12.33 -15%
Web Price:$ 10.48 EA
3/4" FPT x 1/2" SWT Zurn-Wilkins Galvanized Insulated Union
Mark's Part: 92577

Item is Discontinued subject to stock on hand.

List Price: $ 57.23 -11%
Web Price:$ 50.96 EA
1/2" FPT Zurn-Wilkins Galvanized Insulated Union
Mark's Part: 92580
List Price: $ 52.23 -13%
Web Price:$ 45.46 EA
1-1/4" FPT Zurn-Wilkins Galvanized Insulated Union
Mark's Part: 92583
List Price: $ 123.54 -8%
Web Price:$ 113.65 EA
18" Waterflex Water Connector, 3/4" MPT x 3/4" FPT
Mark's Part: 27756
List Price: $ 13.09 -15%
Web Price:$ 11.12 EA
Gas Connector, 3/4" x 24" Yellow
Mark's Part: 33402
List Price: $ 34.84 -15%
Web Price:$ 29.60 EA
Iron Body Service Gas Stop, 1" IPS
Mark's Part: 00222
List Price: $ 43.27 -13%
Web Price:$ 37.66 EA
Watts 2" Dielectric Union Washer Kit
Mark's Part: 24632
List Price: $ 20.60 -15%
Web Price:$ 17.50 EA
Sharkbite Flexible Coupling Hose 3/4" Sb X 3/4 MPT X 24"
Mark's Part: 31756
List Price: $ 33.72 -15%
Web Price:$ 28.65 EA
Screw-In Water Heater Element, 2000 Watts,120V,7" Length
Mark's Part: 10525
List Price: $ 13.02 -15%
Web Price:$ 11.06 EA
Cash Acme NCLX-5 1/2" T&P Safety Relief Valve
Mark's Part: 19225
List Price: $ 47.89 -13%
Web Price:$ 41.68 EA
Legend S-15NL Bronze Y-Strainer 3" SWT x 3" SWT
Mark's Part: 41323
List Price: $ 532.64 -4%
Web Price:$ 511.17 EA
Watts 40XL-4 1"M x 1"F T&P Safety Relief Valve
Mark's Part: 13411
List Price: $ 832.50 -4%
Web Price:$ 798.94 EA
Tee Handle Gas Stop, 1/2"
Mark's Part: 13414
List Price: $ 17.00 -15%
Web Price:$ 14.44 EA
#1 Boiler Repair Plug
Mark's Part: 14557
List Price: $ 4.04 -18%
Web Price:$ 3.31 EA
Watts 1-1/4" FPT x 1-1/4" FPT Galvanized Insulated Union
Mark's Part: 27793
List Price: $ 240.02 -6%
Web Price:$ 225.58 EA
Watts 1/2" FPT x 1/2" FPT Galvanized Insulated Union
Mark's Part: 27790
List Price: $ 88.63 -11%
Web Price:$ 78.92 EA
A.Y. McDonald Flat Head Black Iron Gas Plug Valve with Lockwing, 2"
Mark's Part: 46380
List Price: $ 136.78 -8%
Web Price:$ 125.83 EA
3/4" FPT x 3/4" SWT Zurn-Wilkins Galvanized Insulated Union
Mark's Part: 92588

Item is Discontinued subject to stock on hand.

List Price: $ 57.23 -11%
Web Price:$ 50.96 EA
Watts 1" FPT x 1" FPT Galvanized Insulated Union
Mark's Part: 27792
List Price: $ 161.90 -6%
Web Price:$ 152.16 EA
Watts 2" FPT x 2" FPT Galvanized Insulated Union
Mark's Part: 27795
List Price: $ 291.73 -6%
Web Price:$ 274.18 EA
A.Y. McDonald Flat Head Black Iron Gas Plug Valve with Lockwing, 1/2"
Mark's Part: 46375
List Price: $ 37.37 -15%
Web Price:$ 31.75 EA
Legend S-15NL Bronze Y-Strainer 1-1/4" SWT x 1-1/4" SWT
Mark's Part: 41319
List Price: $ 110.98 -8%
Web Price:$ 102.10 EA
Zurn-Wilkins 3/4" MPT x 3/4" SWT Dielectric Union
Mark's Part: 92576
List Price: $ 26.92 -15%
Web Price:$ 22.87 EA
2" FPT Zurn-Wilkins Galvanized Insulated Union
Mark's Part: 92585
List Price: $ 892.91 -4%
Web Price:$ 856.92 EA
Legend 3/4" FIP x 1/2" SWT Male Forged Steel Pipe Thread to Copper Solder Joint
Mark's Part: 33876
List Price: $ 10.77 -18%
Web Price:$ 8.83 EA
Watts Union, Dielectric 1-1/2" FPT X 1-1/2" FPT
Mark's Part: 47860
List Price: $ 105.15 -11%
Web Price:$ 93.63 EA
24" Stainless Steel Corrugated Water Heater Connectors, 3/4" FPT x 3/4" FPT
Mark's Part: 12344
List Price: $ 8.34 -18%
Web Price:$ 6.84 EA
Legend T-15NL Bronze Y-Strainer 1-1/4" FPT x 1-1/4" FPT
Mark's Part: 41314
List Price: $ 110.98 -8%
Web Price:$ 102.10 EA
Legend S-15NL Bronze Y-Strainer 1-1/2" SWT x 1-1/2" SWT
Mark's Part: 41320
List Price: $ 148.71 -8%
Web Price:$ 136.81 EA
Legend T-15NL Bronze Y-Strainer 2" FPT x 2" FPT
Mark's Part: 40572
List Price: $ 208.20 -6%
Web Price:$ 195.68 EA
30", Copper Thermocouples, Packaged 1 per card or 10 per box
Mark's Part: 09843
List Price: $ 15.42 -15%
Web Price:$ 13.10 EA
18" Copper Waterflex Water Heater Connector - 3/4" FPT x 3/4" SWT
Mark's Part: 09896
List Price: $ 27.26 -15%
Web Price:$ 23.16 EA
Legend 3/4" FIP x 1/2" SWT Female Forged Steel Pipe Thread to Copper Solder Joint
Mark's Part: 33872
List Price: $ 8.08 -18%
Web Price:$ 6.62 EA
Watts 1-1/2" FPT x 1-1/2" FPT Galvanized Insulated Union
Mark's Part: 27794
List Price: $ 222.42 -6%
Web Price:$ 209.04 EA
Watts 11/4" Dielectric Union Washer Kit
Mark's Part: 24630
List Price: $ 15.97 -15%
Web Price:$ 13.57 EA
Copper Waterflex Gasket
Mark's Part: 09875
List Price: $ 0.73 -22%
Web Price:$ 0.57 EA
Legend S-15NL Bronze Y-Strainer 1" SWT x 1" SWT
Mark's Part: 41318
List Price: $ 76.64 -11%
Web Price:$ 68.25 EA
Legend 3/4" FPT x 3/4" FPT Female Forged Steel Pipe Thread Female Brass Pipe Thread
Mark's Part: 33878
List Price: $ 22.32 -15%
Web Price:$ 18.96 EA
Gas Connector, 1/2" x 36" Yellow
Mark's Part: 33398
List Price: $ 20.09 -15%
Web Price:$ 17.07 EA
Watts 40XL-7 1"M x 1"F T&P Safety Relief Valve
Mark's Part: 27116
List Price: $ 533.21 -4%
Web Price:$ 511.72 EA
12" Gasflex Connector 3/8" OD - 1/2" MPT x 1/2" FPT
Mark's Part: 27760
List Price: $ 19.40 -15%
Web Price:$ 16.48 EA
24", Dormont 1/2" O.D. (3/8" ID) Stainless Steel Flexible Connector - 1/2" MPT x 1/2" FPT
Mark's Part: 27766
List Price: $ 28.95 -15%
Web Price:$ 24.60 EA
Watts Union, Dielectric 1-1/4" FPT X 1-1/4" FPT
Mark's Part: 47859
List Price: $ 72.09 -11%
Web Price:$ 64.19 EA
48", Dormont 5/8" O.D. (1/2" ID) Stainless Steel Flexible Connector - 3/4" MPT x 3/4" FPT
Mark's Part: 27771
List Price: $ 43.00 -13%
Web Price:$ 37.42 EA
Dielectric Union, 2" FPT x 2" SWT
Mark's Part: 27785
List Price: $ 162.52 -8%
Web Price:$ 149.51 EA
Watts LL40XL 1" M x 1" F T&P Safety Relief Valve
Mark's Part: 37990
List Price: $ 1418.67 -4%
Web Price:$ 1361.49 EA
Watts 3/4" Dielectric Union Washer Kit
Mark's Part: 24628
List Price: $ 11.71 -18%
Web Price:$ 9.60 PR
Items 1 to 60 of 404;
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