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Bell & Gossett (3)
Caleffi (9)
Resideo (2)
Resideo Braukmann (4)
Taco (16)
Watts (7)

Size

1/2" (34)
3/4" (2)

Connection Type

C x C (2)
NPT x NPT (9)
NPT x Sweat (3)
Press x NPT (6)
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Threaded (6)

Material

Brass (19)
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Cast Iron (9)

Max Pressure (PSI)

25 (6)
60 (1)
100 (4)
150 (6)
175 (7)

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4 (1)
10 (9)
20 (1)
30 (2)

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(4)
(2)

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$10 to $15 (1)
$15 to $20 (1)
$25 to $30 (1)
$50 to $60 (1)
$60 to $70 (1)
$80 to $90 (1)
$100 to $200 (22)
$200 to $300 (9)
$300 to $400 (4)

Combo Pressure Valves

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Product Image of B911, 1/2" Bronze Combination Fill Valve & Backflow Preventer (NPT x NPT)
$284.79 each
In Stock
Get 114 by Tomorrow, Jul 30
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Product Image of 1/2" FM911 Backflow Preventer & Boiler Fill Valve Assembly (NPT or Sweat)
$152.20 each
In Stock
Get 62 by Tomorrow, Jul 30
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Product Image of 1/2" Brass Combination Boiler Feed Valve & Backflow (Sweat x NPT)
$148.62 each
In Stock
Get 45 by Tomorrow, Jul 30
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Product Image of F-3 Dual Unit Valve w/ Fast Fill (Lead Free)
$247.80 each
In Stock
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Product Image of 1/2" Boiler Feed Combination w/ Union Press Fitting Connections (NPT or Sweat)
$285.04 each
In Stock
Get 9 by Tomorrow, Jul 30
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Product Image of 1/2" Boiler Feed Combination (NPT or Sweat)
$261.30 each
In Stock
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Product Image of 1/2" 1450F Pressure Regulator & Relief Combo (Threaded)
$279.04 each
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Product Image of Union Seal Washer (Pack of 10)
Union Seal Washer (Pack of 10)
SKU: 0901443
Resideo Braukmann
SKU: 0901443
$28.32 each
In Stock
Get 2 by Mon, Aug 3
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Product Image of B911S, 1/2" Bronze Combination Fill Valve & Backflow Preventer (Sweat x NPT)
$233.27 each
In Stock
Get 52 by Tomorrow, Jul 30
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Product Image of 1/2" Brass Combination Boiler Feed Valve & Backflow (NPT x NPT)
$149.01 each
In Stock
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Product Image of F-3TU Dual Unit Pressure Reducing Valve w/ Fast Fill Feature (Lead Free)
$237.98 each
In Stock
Get 1 by Tomorrow, Jul 30
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Product Image of 1/2" S1450F Pressure Regulator & Relief Combo (Sweat)
$342.46 each
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Product Image of 1/2" Cast Iron Combination Boiler Feed Valve & Backflow (NPT x NPT)
$132.50 each
In Stock
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Product Image of Model 8 Dual Unit Pressure Reducing Valve (Lead Free)
$177.10 each
In Stock
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Product Image of 1/2" T1450F Pressure Regulator & Relief Combo (Union Threaded)
$330.70 each
In Stock
Get 3 by Mon, Aug 3
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination w/ Pressure Gauge (NPT x NPT)
$189.99 each
In Stock
Get 60 by Tomorrow, Jul 30
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Product Image of 1/2" Cast Iron Combination Boiler Feed Valve & Backflow (Sweat x NPT)
$138.08 each
In Stock
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Product Image of 1/2" 573 Backflow Preventer & AutoFill Combination w/ Pressure Gauge (Sweat x NPT)
$199.01 each
In Stock
Get 15 by Tomorrow, Jul 30
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination (NPT x NPT)
$158.68 each
In Stock
Get 74 by Tomorrow, Jul 30
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination (Sweat x NPT)
$155.47 each
In Stock
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Product Image of Complete Valve Insert for NK300S-100 and NK300S-100UP, w/out Sieve, D04FMA-1/2
$53.24 each
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination w/ Pressure Gauge (Press x Press)
$219.16 each
In Stock
Get 42 by Tomorrow, Jul 30
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Product Image of 1/4" NPT Blanking Plug w/ O-Ring for NK300S-100 & NK300S-UP, S06K-1/4NPT
$19.66 each
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Product Image of 1/2" Combination Boiler Feed Valve & Backflow (NPT x Sweat)
$127.11 each
In Stock
Get 13 by Tomorrow, Jul 30
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Product Image of 1/2" Combination Boiler Feed Valve & Backflow (NPT x NPT)
$130.00 each
In Stock
Get 3 by Tomorrow, Jul 30
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Product Image of 3/4" Brass Combination Boiler Feed Valve & Backflow (Sweat x NPT)
$163.36 each
In Stock
Get 4 by Tomorrow, Jul 30
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Product Image of 3/4" Brass Combination Boiler Feed Valve & Backflow (NPT x NPT)
$161.72 each
In Stock
Get 1 by Tomorrow, Jul 30
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Product Image of 1/2" Brass Combination Boiler Feed Valve & Backflow (Union Press x NPT)
$153.52 each
In Stock
Get 72 by Mon, Aug 3
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Product Image of 1/2" Cast Iron Combination Boiler Feed Valve & Backflow (Union Press x NPT)
$142.89 each
In Stock
Get 2 by Tomorrow, Jul 30
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Product Image of 1/2" B9-11TM3 (Combination 1156F - 9D (Press x Press)
$312.32 each
In Stock
Get 21 by Tomorrow, Jul 30
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination (Press x Press)
$213.61 each
In Stock
Get 29 by Tomorrow, Jul 30
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination (Press x NPT)
$187.69 each
In Stock
Get 7 by Tomorrow, Jul 30
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Product Image of 1/2" 573 Backflow Preventer and AutoFill Combination w/ Pressure Gauge (Press x NPT)
$179.21 each
In Stock
Get 34 by Tomorrow, Jul 30
In Stock
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Product Image of 1/2" Combination Boiler Feed Valve & Backflow (Union Press x NPT)
$141.58 each
In Stock
Get 17 by Tomorrow, Jul 30
In Stock
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Product Image of Replacement Body with Washers
Replacement Body with Washers
SKU: 573100A
Caleffi
SKU: 573100A
Brand: Caleffi
(9)
$61.66 each
In Stock
Get 9 by Tomorrow, Jul 30
In Stock
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Product Image of B911, 1/2" Bronze Combination Fill Valve and Backflow Preventer (ProPress x NPT)
$321.34 each
In Stock
Get 2 by Tomorrow, Jul 30
In Stock
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Product Image of Taco Dual Unit Valve (Threaded)
Taco Dual Unit Valve (Threaded)
SKU: 334-T3
Taco
SKU: 334-T3
Brand: Taco
(6)
$178.82 each
In Stock
Get 14 by Mon, Aug 3
In Stock
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Product Image of Backflow Preventer Cartridge
Backflow Preventer Cartridge
SKU: 3450-001RP
Taco
SKU: 3450-001RP
Brand: Taco
$88.58 each
Backorder
Get it by Thu, Aug 27 - Fri, Sep 25
Backorder
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Product Image of Backflow Preventer Wrench
Backflow Preventer Wrench
SKU: 3450-003RP
Taco
SKU: 3450-003RP
Brand: Taco
$12.46 each
In Stock
Get 2 by Mon, Aug 3
In Stock
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Product Image of 1/2" Cast Iron Pressure Reducing Dual Unit Valve (Press)
$194.74 each
Backorder
Get it by Thu, Aug 27 - Fri, Sep 25
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Product Image of Taco Cast Iron Pressure Reducing Valve, Dual Control (Sweat)
$183.29 each
In Stock
Get 7 by Mon, Aug 3
In Stock
Get 7 by Mon, Aug 3
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More About Combo Pressure Valves
This category contains fill valve and backflow preventer combinations. These valves are designed to provide make-up water to the boiler and prevent backflow when supply pressure falls below system pressure.
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