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- Plumbing
- Pressure and Temperature Control Valves
- Water Pressure Reducing Valves
WATTS Water Pressure Reducing Valves
ANSI approved valves used to maintain a preset inlet pressure to prevent damage to the piping systems from excessive water / steam pressure. Intended for both domestic and industrial applications in oil lines, autoclaves and single radiators
ANSI approved valves used to maintain a preset inlet pressure to prevent damage to the piping systems from excessive water / steam pressure. Intended for both domestic and industrial applications in oil lines, autoclaves and single radiators
Water pressure reducing valves are devices used in plumbing systems to control and reduce the pressure of water flowing through pipes. They are installed where the incoming water pressure
...Read moreWater Pressure Reducing Valve Repair Kits
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B| Style | Model | Mfr. Series | Price (ex. VAT) | |
|---|---|---|---|---|
| A | RK 25AUB 1 1/2 | €167.84 | ||
| B | LFRK N223M2 2 1/2 | €657.17 |
Water Pressure Regulator Valves
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B| Style | Model | Connection Type | Height | Inlet Size | Length | Outlet Size | Pressure Adjustment Range | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|
| A | 1/2 LF25AUB-HP-Z3 | €239.85 | |||||||
| B | 1 LFU5B-LP-Z3 | €433.29 |
A| Style | Model | Mfr. Series | Price (ex. VAT) | |
|---|---|---|---|---|
| A | 3-M115FDB1A1B0H-0 | €5,336.91 | RFQ | |
| A | 2-M115FBA1A1B0H-0 | €4,741.40 | RFQ | |
| A | 2-M115FDB1A1B0H-0 | €4,522.52 | RFQ | |
| A | 2-M115FAB1A1B0H-0 | €4,974.12 | RFQ | |
| A | 2-M115FCB1A1B0H-0 | €5,909.34 | RFQ | |
| A | 2.5-M115FBA1A1B0H-0 | €5,350.38 | RFQ | |
| A | 2.5-M115FDA1A1B0H-0 | €4,345.84 | RFQ | |
| A | 2.5-M115FAA1A1B0H-0 | €5,119.83 | RFQ | |
| A | 2.5-M115FBB1A1B0H-0 | €6,176.86 | RFQ | |
| A | 2.5-M115FCA1A1B0H-0 | €6,224.71 | RFQ | |
| A | 2.5-M115FAB1A1B0H-0 | €5,946.31 | RFQ | |
| A | 2.5-M115FCB1A1B0H-0 | €7,049.01 | RFQ | |
| A | 3-M115FDA1A1B0H-0 | €4,667.38 | RFQ | |
| A | 3-M115FCA1A1B0H-0 | €6,516.16 | RFQ | |
| A | 2-M115FCA1A1B0H-0 | €5,085.04 | RFQ | |
| A | 3-M115FCB1A1B0H-0 | €7,342.64 | RFQ | |
| A | 4-M115FBA1A1B0H-0 | €7,605.82 | RFQ | |
| A | 3-M115FAB1A1B0H-0 | €5,985.47 | RFQ | |
| A | 4-M115FCA1A1B0H-0 | €8,852.04 | RFQ | |
| A | 4-M115FBB1A1B0H-0 | €8,432.30 | RFQ | |
| A | 4-M115FDB1A1B0H-0 | €6,849.13 | RFQ | |
| A | 6-M115FCA1A1B0H-0 | €11,786.07 | RFQ | |
| A | 6-M115FCB1A1B0H-0 | €12,610.37 | RFQ | |
| A | 8-M115FBA1A1B0H-0 | €17,575.79 | RFQ | |
| A | 8-M115FDA1A1B0H-0 | €14,275.94 | RFQ |
LFRC105 Series Water Pressure Reducing Valves
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E| Style | Model | Body Material | Disc Material | Inlet Connection | Inlet Size | Inlet Type | Max. Working Pressure | Min. Temp. | Outlet Connection | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LFRC105-THDXUT 1 | €157.21 | |||||||||
| B | RC105-CEFXCEF 3/4 | €109.97 | |||||||||
| B | RC105-CEFXCEF 1 | €156.34 | |||||||||
| C | LFRC105-PEXXPEX 1 | €156.34 | |||||||||
| D | LFRC105-PEXXPEX 3/4 | €109.97 | |||||||||
| E | LFRC105-THDXUT 3/4 | €110.42 |
Water Pressure Reducing Valve, Lead Free Brass, 25 to 75 psi
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B| Style | Model | Height | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | 11/2 25AUB-GG-Z3 | €817.20 | |||
| B | 11/4 25AUB-GG-Z3 | €566.29 |
A| Style | Model | Inlet Size | Price (ex. VAT) | |
|---|---|---|---|---|
| A | LFX65B-U-QC-RIK 1 | €235.17 | RFQ | |
| A | LFX65BU-PEX-RIK 1 | €235.17 | RFQ | |
| A | LFX65BDU-PEX-RIK 1 | €270.88 | RFQ | |
| A | LFX65BU-CPVC-RIK 1 | €235.17 | RFQ | |
| A | LFX65BDU-CPVC-RIK 1 | €270.88 | RFQ | |
| A | LFX65BDU-PEX-RIK 1/2 | €206.83 | RFQ | |
| A | LFX65BU-PEX-RIK 3/4 | €201.33 | RFQ | |
| A | LFX65BDU-PEX-RIK 3/4 | €223.31 | RFQ | |
| A | LFX65BU-CPVC-RIK 3/4 | €201.33 | RFQ | |
| A | LFX65BDU-CPVC-RIK 3/4 | €223.31 | RFQ |
LFN223B Series Water Pressure Reducing Valves
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B| Style | Model | Height | Inlet Size | Length | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|
| A | LFN223M2-B 2 1/2 | €3,335.64 | |||||
| B | LFN223M1-B 3 | €4,805.01 |
LFX65B Series Water Pressure Reducing Valves
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L| Style | Model | Body Material | Inlet Size | Item | Max. Working Pressure | Min. Temp. | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|
| A | LFX65B 1 | €560.95 | RFQ | ||||||
| B | LFX65B 2 | €2,556.89 | RFQ | ||||||
| C | LFX65B-G 1 | €588.42 | |||||||
| D | LFX65B-CART-HP 1 1/2-2 | €1,610.65 | |||||||
| E | LFX65B-CART-STD 1/2-3/4 | €272.73 | |||||||
| F | LFX65B CARTASSY-STD 1 | €322.11 | RFQ | ||||||
| G | LFX65B-DU-QC-RIK 3/4 | €223.31 | RFQ | ||||||
| H | LFX65B-DU-QC-RIK 1/2 | €206.83 | RFQ | ||||||
| I | LFX65B-DU-QC-RIK 1 | €270.88 | RFQ | ||||||
| J | LFX65B-CART-HP 1/2-3/4 | €339.49 | RFQ | ||||||
| K | LFX65B-CART-STD 1 1/4 | €712.88 | RFQ | ||||||
| L | LFX65B-CARTASSY-HP 1 1/4 | €890.44 | RFQ |
LFN250 Series Water Pressure Reducing Valves
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B| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | LFN250B-Z2-020 3/4 | €485.04 | |
| B | LFN250B 3/4 | €485.04 |
LFN55B Series Water Pressure Reducing Valves
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C| Style | Model | Length | Material | Pipe Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|
| A | LFN55B-DU-S 1 1/4 IN | €831.86 | RFQ | |||
| B | LFN55B-U 1 1/4 IN | €612.57 | ||||
| C | 2 LF N55BU | €862.96 |
Water Pressure Reducing Valves
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K| Style | Model | Connection Type | Disc Material | Height | Inlet Size | Inlet Type | Item | Length | Material | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LFX65BU 1/2 | €162.50 | |||||||||
| B | LFX65BU-PEX-RIK 1/2 | €183.94 | RFQ | ||||||||
| C | LFN223FM2 3 | €6,448.69 | RFQ | ||||||||
| D | 3/4 LF 223 | €535.36 | |||||||||
| E | 1/2 LF U5BZ3 | €530.66 | |||||||||
| F | 1/2 1156F-PRESS | €214.92 | |||||||||
| G | 1" LFN55BM1-DU-PEX | €270.92 | |||||||||
| H | 1" LFN55BM1-U | €279.15 | |||||||||
| I | 1/2" LFN55BM1-DU-PEX | €256.50 | |||||||||
| J | LF127W-206 | €14,339.33 | |||||||||
| K | LFU5B-LP-Z3 | €5,438.82 |
N55B Series Water Pressure Reducing Valves
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B| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | N55BM1 1 IN | €251.65 | RFQ |
| B | N55BM1-DU-CPVC 3/4 IN | €299.25 | RFQ |
LF25AUB-Z3 Series Water Pressure Reducing Valves
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I| Style | Model | Adjustable Reduced Pressure Range | Body Material | Connection Type | Disc Material | Height | High Pressure Reduced Pressure Range | Inlet Connection | Inlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 1/2 LF 25 AUB Z3 | €354.37 | |||||||||
| B | LF25AUB-Z3 (W/PRESS) 3/4 | €293.25 | RFQ | ||||||||
| C | LF25AUB-S-DU-G-HP-Z3 3/4 | €723.01 | |||||||||
| D | LF25AUB-Z3 1/2 D | €393.54 | |||||||||
| D | LF25AUB-Z3 3/4 D | €519.50 | |||||||||
| E | LF25AUB-G-HP-Z3 3/4 | €629.04 | |||||||||
| B | LF25AUB-Z3 (W/PRESS) 2 | €1,652.25 | RFQ | ||||||||
| B | LF25AUB-Z3 (W/PRESS) 1 1/2 | €1,250.02 | |||||||||
| B | LF25AUB-Z3 (W/PRESS) 1 1/4 | €983.57 | |||||||||
| B | LF25AUB-Z3 (W/PRESS) 1 | €431.30 | RFQ | ||||||||
| F | LF25AUB-Z3 1 1/2 | €1,159.07 | |||||||||
| G | LF25AUB-LP-Z9 3/4 | €689.12 | |||||||||
| F | LF25AUB-Z3 1 1/4 | €703.68 | |||||||||
| B | LF25AUB-Z3 (W/PRESS) 1/2 | €341.20 | RFQ | ||||||||
| H | LF25AUB-HP-Z6 1 | €801.15 | |||||||||
| F | LF25AUB-Z3 3/4 | €266.81 | |||||||||
| F | LF25AUB-Z3 2 | €1,477.63 | RFQ | ||||||||
| F | LF25AUB-LP-Z3 3/4 | €508.80 | |||||||||
| I | LF25AUB-DU-Z3 3/4 | €531.71 | |||||||||
| G | LF25AUB-DU-QC-Z3 3/4 | €913.30 | |||||||||
| G | LF25AUB-QC-Z3 3/4 | €517.06 | |||||||||
| A | 3/4 LF 25 AUB-Z3 | €311.40 | |||||||||
| G | LF25AUB-DU-PEXXPEX 3/4 | €626.89 | |||||||||
| G | LF25AUB-S-G-HP-Z3 3/4 | €629.04 | |||||||||
| F | LF25AUB-Z3 1/2 | €322.94 |
LFF127W Series High Capacity Water Pressure Reducing Valves
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C| Style | Model | Inlet Size | Outlet Size | Price (ex. VAT) | |
|---|---|---|---|---|---|
| A | LFF127W-206 | €17,595.36 | |||
| B | LFF127W-110 4 | €17,306.99 | RFQ | ||
| B | LFF127W-210 4 | €17,306.99 | RFQ | ||
| C | LFF127W-206 3 | €13,972.26 | RFQ | ||
| C | LFF127W-206 4 | €17,301.51 | RFQ | ||
| C | LFF127W-208 4 | €17,306.99 | RFQ |
LF223 Series High Capacity Water Pressure Reducing Valves
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M| Style | Model | Adjustable Reduced Pressure Range | Body Material | Connection Type | Disc Material | Height | High Pressure Reduced Pressure Range | Inlet Size | Inlet Thread Type | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | LF223-S-Z3 3/4 | €1,638.09 | |||||||||
| B | LF223 3/4 | €451.48 | |||||||||
| A | LF223-S-B-HP 3/4 | €2,326.26 | |||||||||
| A | LF223-S 3/4 | €578.74 | |||||||||
| C | LF223-B-Z3 3/4 | €1,254.65 | |||||||||
| C | LF223-HP 3/4 | €1,366.30 | |||||||||
| A | LF223-S-HP 3/4 | €1,765.30 | |||||||||
| C | LF223-LP 3/4 | €1,366.30 | |||||||||
| B | LF223-B 3/4 | €1,147.59 | |||||||||
| D | LF223-LP 1/2 | €1,364.48 | |||||||||
| E | LF223-S-B-LP 1/2 | €1,969.38 | RFQ | ||||||||
| A | LF223-S-B 3/4 | €1,563.05 | |||||||||
| A | LF223-S-B-LP 3/4 | €1,861.35 | |||||||||
| B | LF223-B-LP 3/4 | €1,499.73 | |||||||||
| D | LF223 2 | €2,545.50 | |||||||||
| F | LF223-S 1 1/4 | €1,556.88 | |||||||||
| G | 11/4 LF 223 | €1,306.54 | |||||||||
| A | LF223-S-LP 3/4 | €1,861.35 | |||||||||
| H | 1/2 LF 223 | €409.96 | |||||||||
| I | LF223-S 2 | €2,354.10 | |||||||||
| D | LF223 1 | €832.33 | |||||||||
| J | LF223-S 1/2 | €522.75 | |||||||||
| K | LF223-S 3/4 | €560.95 | |||||||||
| L | LF223-S 1 1/2 | €1,569.21 | |||||||||
| M | LF223-S 1 | €773.77 |
LFN55B-M1 Series Water Pressure Reducing Valves
Watts LFN55B-M1 Series water pressure-reducing valves are used in plumbing systems to regulate and control water pressure. These valves are employed in residential, commercial and industrial settings. They are offered in lead-free brass, brass and lead-free copper silicon alloy construction for safeguarding the water supply from harmful contaminants. These valves are equipped with a stainless steel strainer to prevent debris and sediment from entering the downstream plumbing system. They have thermoplastic seats for a tight & reliable seal to prevent water leakage. These valves are integrated with thermal expansion bypass to allow controlled release of excess pressure, resulting from thermal expansion in the water distribution system. They are available in female threaded and union joints inlet types.
Watts LFN55B-M1 Series water pressure-reducing valves are used in plumbing systems to regulate and control water pressure. These valves are employed in residential, commercial and industrial settings. They are offered in lead-free brass, brass and lead-free copper silicon alloy construction for safeguarding the water supply from harmful contaminants. These valves are equipped with a stainless steel strainer to prevent debris and sediment from entering the downstream plumbing system. They have thermoplastic seats for a tight & reliable seal to prevent water leakage. These valves are integrated with thermal expansion bypass to allow controlled release of excess pressure, resulting from thermal expansion in the water distribution system. They are available in female threaded and union joints inlet types.
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P| Style | Model | Body Material | Disc Material | Inlet Connection | Inlet Size | Inlet Type | Length | Material | Max. Working Pressure | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 3/4 LF N55BUM1 | €198.00 | |||||||||
| B | LFN55BM1-DU-G 3/4 IN | €350.50 | |||||||||
| A | 1/2 LF N55BUM1 | €177.54 | |||||||||
| C | LFN55BM1-DUS-G 1 | €392.17 | |||||||||
| D | LFN55BM1 3/4 IN | €271.79 | |||||||||
| E | LFN55BM1-DU-CPVC 3/4 | €290.54 | |||||||||
| F | LFN55BM1-U-G 1 | €350.97 | |||||||||
| G | LFN55BM1-DU-G 1 | €392.17 | |||||||||
| H | LFN55BM1-DU-CPVC 1 | €366.29 | |||||||||
| I | LFN55BM1-DU-PEX-G 1 | €392.17 | |||||||||
| J | LFN55BM1-DU-S 3/4 IN | €336.77 | |||||||||
| C | LFN55BM1-G 1 | €334.66 | |||||||||
| K | LFN55BM1-DU 1 IN | €425.75 | |||||||||
| C | LFN55BM1-US-G 1 | €350.97 | |||||||||
| C | LFN55BM1-U-070 3/4 | €316.42 | |||||||||
| L | LFN55BM1-U 1 IN | €182.47 | |||||||||
| M | LFN55BM1-DU 3/4 IN | €336.77 | |||||||||
| N | LFN55BM1 1/2 IN | €268.16 | |||||||||
| O | LFN55BM1 U 3/4 | €140.94 | |||||||||
| P | LFN55BM1-DU 1/2 IN | €308.40 | |||||||||
| C | LFN55BM1-U-070 1 | €368.21 |
LFU5B Series Water Pressure Reducing Valves
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O| Style | Model | Adjustable Reduced Pressure Range | Body Material | Connection Type | Height | Inlet Connection | Inlet Size | Inlet Type | Length | Price (ex. VAT) | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 3/4 LF U5BZ3 | €947.11 | |||||||||
| B | 1/2 LFU5B-LP-Z3 | €570.33 | |||||||||
| C | 3/4 LFU5B-LP-Z3 | €1,046.44 | |||||||||
| B | LFU5B-Z3 | €2,194.09 | |||||||||
| B | 1-1/4 LFU5B-Z3-LP | €3,031.99 | |||||||||
| D | 1-1/2 LFU5B-Z3-LP | €3,884.80 | |||||||||
| E | LFU5B-LP-Z3 | €4,644.01 | |||||||||
| F | LFU5B-Z3 3/4 | €1,419.82 | |||||||||
| G | LFU5B-Z3 1 | €949.19 | |||||||||
| H | LFU5B-LP-Z3 3/4 | €1,062.41 | |||||||||
| I | LFU5B-QC-Z3 3/4 | €1,402.00 | |||||||||
| J | LFU5B-LP-Z3 1/2 | €874.24 | |||||||||
| K | LFU5B-S Z3 1 1/2 | €4,740.40 | RFQ | ||||||||
| L | LFU5B-Z3 1 | €1,385.75 | |||||||||
| M | LFU5B-Z3 2 | €2,929.73 | RFQ | ||||||||
| M | LFU5B-Z3 1 1/2 | €2,221.07 | RFQ | ||||||||
| N | LFU5B-QC-Z3 1 | €2,068.23 | |||||||||
| O | LFU5B-S Z3 1 1/4 | €4,211.44 | |||||||||
| M | LFU5B-Z3 1/2 | €828.47 |
LFN45B-M1 Series Water Pressure Reducing Valves
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C| Style | Model | Inlet Size | Material | Max. Working Pressure | Min. Temp. | Outlet Size | Price (ex. VAT) | |
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| A | 1" LFN45BDU-EZ-M1 | €340.59 | ||||||
| B | LFN45BU-070-M1 1 | €314.78 | ||||||
| C | LFN45BU-LP-M1 3/4 | €290.07 |
LFN45B-L Series Water Pressure Reducing Valves
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E| Style | Model | Body Material | Disc Material | Inlet Connection | Inlet Size | Inlet Type | Outlet Connection | Outlet Size | Outlet Type | Price (ex. VAT) | |
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| A | LFN45B-DU 1 1/4 | €836.44 | RFQ | ||||||||
| B | LFN45BU 1 1/2 | €1,148.49 | RFQ | ||||||||
| C | LFN45B (W/PRESS) 1 1/2 | €1,154.47 | RFQ | ||||||||
| D | LFN45B (W/PRESS) 1 1/4 | €746.41 | RFQ | ||||||||
| D | LFN45B (W/PRESS) 2 | €1,567.84 | RFQ | ||||||||
| E | LFN45B-DU-S 1 1/4 | €778.79 | RFQ |
LFN45B-EZ Series Water Pressure Reducing Valves
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H| Style | Model | Body Material | Disc Material | Inlet Connection | Inlet Size | Inlet Type | Max. Working Pressure | Min. Temp. | Outlet Connection | Price (ex. VAT) | |
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| A | LFN45B-EZM1-DU 3/4 | €298.35 | |||||||||
| B | LFN45BDU-EZ-PEXXPEX-M1 3/4 | €318.48 | |||||||||
| C | LFN45BM1-DU-EZ-G 3/4 | €337.69 | |||||||||
| D | LFN45BM1-DU-EZ-GG 3/4 | €440.19 | |||||||||
| E | LFN45BM1-DU-EZ-GG 1 | €517.06 | |||||||||
| F | LFN45B-EZM1-DU 1 | €322.11 | |||||||||
| G | LFN45BM1-DU-EZ-G 1 | €364.21 | |||||||||
| H | LFN45BDU-EZ-PEXXPEX-M1 1 | €322.11 |
| Style | Model | Price (ex. VAT) | |
|---|---|---|---|
| A | 223 2 | €2,382.49 | RFQ |
| A | 223 1 1/4 | €1,257.42 | RFQ |
| A | 223-B-LP 1/2 | €1,196.99 | RFQ |
| A | 223-Z3 1 1/4 | €2,780.16 | RFQ |
| A | 223-Z3 3/4 | €1,003.00 | RFQ |
| A | 223-Z3 1 | €1,374.53 | RFQ |
| A | 223-LP 1/2 | €1,138.42 | RFQ |
Features
- Watts water pressure regulators have iron / bronze / lead-free brass / copper / copper silicon alloy construction for minimising wear while preventing chances of leakages.
- Selected models have enlarged diaphragm and seat support for delivering high flow capacity while handling high water pressures.
- They feature a high-temperature diaphragm and stainless steel strainer for handling hot water and filtering contaminations, respectively.
- Their field adjustable downstream pressure set point allows for quick calibration depending upon the flow requirement.
Working Mechanism
- The direct acting type valves have internal spring loaded diaphragm which connects to a disc that modulates outlet flow controlling pressure.
- High pressure water that enters the valve is constricted inside the valve body.
- This constricting action is controlled by a disc and an adjustable spring loaded diaphragm.
- Even if the input supply pressure fluctuates, this diaphragm & disc combination ensures a constant water flow at the outlet.
- The spring tension controls the outlet water pressure which can be increased / decreased by loading or unloading the valve spring.
- In case the downstream water pressure is above the set pressure, the diaphragm inside the valve compresses the spring.
- If the downstream water pressure is under the set pressure, the valve spring pushes the valve to increase the flow from the regulator.
- These valves are installed mid line before fixtures and after backflow preventers and water supply stops. They have inlet and outlet ports that are installed in series with the pipe.
Standards and Approvals
- NSF
- ASSE
Frequently Asked Questions
Do these valves prevent water hammer?
Yes, water hammer is a phenomenon that generates noise by shocks of high flow water in pipes when the fixture is closed suddenly. The bounce-back caused is called a water hammer. This shortcoming can be reduced by using the pressure reducing valves in piping systems.
Can these valves reduce high pressures?
Yes, for reducing high water pressures, users can install multiple reducing valves in series or parallel in the line. This cascading effect lowers the water pressure to safer values and protects fixtures.
How to know if the water pressure is high?
If the water flow through pipes causes a banging noise, it signifies that the pressure is excessive and needs to be regulated.
Are there any end fittings for installing Watts valves?
Yes, various end fitting configurations facilitate the installation and servicing of these pressure reducing valves. Union fittings of CPVC, solder, female threaded, Quick-Connect, PEX and press end connections and water meter threads can be used for installation.
Why are disc guides and seats critical in valves?
These two components are most critical in the path of high-pressure water. They handle and regulate excessive water velocity and volatile water conditions in pipings.
Why are pressure reducing valves necessary?
Watts water pressure regulator valves protect connected piping and fixtures against blowouts and leakages that are caused by high water pressure. They also maintain the water pressure by regulating the fluctuating water supply at the intake side.
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