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Pressure regulator

18 Single-Stage General Purpose Regulator - Brass18A-510 Acetylene Single-Stage General Purpose Regulator - Brass81 Dual-Stage General Purpose Regulator - Brass81-2 Dual Stage General Purpose Low Delivery Pressure Regulator - Brass81-F Dual Stage General Purpose Regulator with Flowmeter - Brass81LA-510 Acetylene Dual-Stage General Purpose Regulator - Brass1250 Dual-Stage Medium-Purity Regulator - Brass2210 Series Miniature Dual-Stage Regulator - Brass3010 Series Corrosive Service Lecture Bottle Regulator, Monel/SS/ Hastelloy3030 & 3040 High Delivery Pressure Regulator - Brass3030S & 3040S Series High Delivery Pressure Regulator - SS3060A Very High Delivery Pressure (Non-Relieving) Regulator - Brass3060AR Very High Delivery Pressure (Self-Relieving) Regulator - Brass3060SA Very High Delivery Pressure (Non-Relieving) Regulator - SS3060SAR Very High Delivery Pressure (Self-Relieving) Regulator - SS3120A Dual-Stage High-Purity Regulator - Brass3200 High-Purity/High Flow (1.0 Cv) Line Regulator - SS3200 Single-Stage High- Purity/High Flow Regulator - SS3210B Series Single-Stage Corrosion Resistant Regulator - Monel3240 High- Purity/High Flow (1.0 Cv) Line Regulator - Brass3240 Single-Stage High-Purity/High Flow (1.0 Cv) Regulator - Brass3320B Single-Stage Non-Corrosive Lecture Bottle Regulator - Brass3345 MicroMATE™ Preset Flow Rate Regulators - Brass3347A MicroMATE™ Variable Flow Rate Regulator - Brass3359 MicroMATE™ Preset Flow Regulator - SS3370 Series Micro VOC Regulators - Stainless Steel3396 Single-Stage High-Purity Absolute Pressure Regulator - Brass3420A High-Purity Line Regulator - Brass3430A High-Purity Line Regulator - SS3450 High Purity/High Flow (0.6 Cv) Line Regulator - SS3470A General Purpose Line Regulator - Brass3491A General Purpose Vacuum Line Regulator - Brass3494 High-Purity Absolute Pressure Line Regulator - SS3510A Single-Stage High-Purity Regulator - SS3530A Single-Stage High-Purity Regulator - Brass3540 Heated Dual-Stage Regulator - Brass3550 Single-Stage High-Purity Miniature Regulator - Brass3570 Single-Stage High-Purity Miniature Regulator - SS3610A Series Single-Stage with Tied-Diaphragm Regulator - SS3630A Series Single-Stage High-Flow Corrosion Resistant Regulator - SS, Hastelloy3700 Low Pressure Line Regulator - Cast Zinc3802A Series Dual-Stage Low Delivery Pressure Regulator - SS3810A Dual-Stage High-Purity Regulator - SS3850 Dual-Stage High-Purity Miniature Regulator - Brass3870 Dual-Stage High-Purity Miniature Regulator - SS6342A Precision Adjustable Relief Valve/Back Pressure Regulator - Brass9300 ULTRA-LINE® Single-Stage Ultra High-Purity Regulator - SS9307 Series VOC Regulators - Stainless Steel9330 ULTRA-LINE® Ultra High-Purity with Tied Diaphragm Line Regulator - SS9360 ULTRA-LINE® Single-Stage Ultra High-Purity with Tied Diaphragm Regulator - SS9460 ULTRA-LINE® Dual-Stage Ultra High-Purity with Tied Diaphragms Regulator - SSDR490 Series Vacuum Actuated Regulator - AluminumLPHF Series Assist Gas RegulatorRFM-0030 MicroMATE™ Low-Flow/Low Pressure Regulator - Aluminum

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Replacing a failing water pressure regulator is critical for maintaining safe and consistent water flow and pressure throughout a building's plumbing system. Fluctuating water pressure caused by a faulty regulator can lead to leaks, bursting pipes, damage to appliances, and higher utility bills over time. This article provides a comprehensive guide on detecting a failing water pressure regulator, replacing it efficiently, and installing a new one.

Figure 3: Water pressure regulator parts: threaded male connection at the inlet (A), adjustment knob (B), filter bowl (C), pressure gauge (D), housing (E), and threaded male connection at the outlet (F)

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A water pressure regulator, also referred to as a pressure reducing valve (PRV), is an essential device installed along the main water supply line entering a building. The regulator controls the incoming main line water pressure to a stable and suitable range of pressure for the building's internal plumbing network. It adjusts the high main line pressure that fluctuates, depending on municipal water demand and supply, to a lower and more consistent pressure level. This protects the infrastructure of pipes, joints, faucets, and water-based appliances from damage over time due to exposure to excessively high water pressure. The regulator's stable, reduced pressure level output ensures optimal flow rates and functionality throughout the system. They are widely used in residential, commercial, and industrial applications. Read more about home water pressure regulators and RV water pressure regulators.

The water pressure regulator is typically located after the mains valve, and is secured with threaded couplings. A standard installation setup consists of the main shutoff valve, check valve, filtering unit and the water pressure regulator in order. Here's how to replace a water pressure regulator:

If one suspects the water pressure regulator to be faulty based on these signs and tests, it may be necessary to replace it.

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Figure 2: Water pressure regulator installation setup: foundation wall (A), footing (B), supply plumbing from street (C), main water shutoff valve (D), pressure regulator (E), pressure relief valve (F), pressure relief discharge pipe (G), filter (H), water meter (I) and floor drain (J)

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MATHESON offers a broad line of gas pressure regulators - including brass regulators, stainless steel regulators, and Monel regulators - in single stage and dual stage regulator designs, and suitable for a wide range of applications.

Our technical team has prepared a guide that may help you select the correct regulator for your application. Please see our Regulator Selection Guide by Gas Service for more more information.

An automatic water leak detection system provides continuous monitoring of water flow and pressure to promptly identify and alert homeowners to potential leaks. These devices send alerts to the phone in case of a leak and can shut off the main water supply to prevent damage. In other cases, detecting a faulty water pressure regulator involves looking for signs that it is malfunctioning. Here are steps and signs to help determine if the water pressure regulator is faulty:

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