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The Pressure Reducing Valve is engineered to lower and stabilize incoming water pressure as it enters Mr.Steam's MS and Steam@Home series residential steambath generators, maintaining the recommended 15-20 PSI inlet pressure the generator needs to operate safely and efficiently. Featuring a balanced piston design, an internal thermal expansion by-pass, and an integral stainless steel strainer, this valve delivers precise, consistent downstream pressure control even as supply conditions fluctuate. Its corrosion-resistant, sealed bronze body and bonnet, paired with an all-stainless-steel spring, are built to withstand the sustained heat and moisture of steam generator operation, rated for supply pressure up to 300 PSIG and a temperature range of 33°F to 180°F. Manufactured in the USA and factory tested, this valve is backed by a 2-year limited warranty, giving homeowners confidence in its long-term reliability. Straightforward to install with a standard 1/2" NPT connection, it protects the generator's internal components from pressure-related stress and helps preserve consistent, safe steam performance session after session.

  • Precise 15 PSI Regulation – Reduces and stabilizes incoming water pressure to the 15-20 PSI range recommended for safe generator operation.
  • Balanced Piston Design – Delivers consistent downstream pressure control even as supply conditions fluctuate.
  • Corrosion-Resistant Bronze Construction – Sealed bronze body, bonnet, and stainless steel spring withstand sustained heat and moisture exposure.
  • Integral SS Strainer – Filters incoming water to help protect downstream components from sediment and debris.
  • 2-Year Limited Warranty – Manufactured and factory tested in the USA, backed by manufacturer warranty coverage for added confidence.
  • MPN: 104198
  • UPC: 767931910005
  • Compatibility: Mr.Steam MS and Steam@Home Series Residential Steambath Generators
  • Part Type: Pressure Reducing Valve
  • What's Included: (1) Pressure Reducing Valve
  • Set Pressure: 15 PSI
  • Maximum Supply Pressure: 300 PSIG
  • Temperature Range: 33°F – 180°F
  • Connection Size: 1/2" NPT
  • Dimensions: 5-7/8" H x 5-5/8" L x 2-3/4" W
  • Material: Bronze body and bonnet, stainless steel spring and strainer
  • Weight: 2 lb
  • Country of Origin: United States (per manufacturer; pricebook lists Italy — see flag)
  • Warranty: 2-Year Limited
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Pressure Reducing Valve | Mr. Steam

SKU: MRS-104198
Regular price $243.00
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The Pressure Reducing Valve is engineered to lower and stabilize incoming water pressure as it enters Mr.Steam's MS and Steam@Home series residential steambath generators, maintaining the recommended 15-20 PSI inlet pressure the generator needs to operate safely and efficiently. Featuring a balanced piston design, an internal thermal expansion by-pass, and an integral stainless steel strainer, this valve delivers precise, consistent downstream pressure control even as supply conditions fluctuate. Its corrosion-resistant, sealed bronze body and bonnet, paired with an all-stainless-steel spring, are built to withstand the sustained heat and moisture of steam generator operation, rated for supply pressure up to 300 PSIG and a temperature range of 33°F to 180°F. Manufactured in the USA and factory tested, this valve is backed by a 2-year limited warranty, giving homeowners confidence in its long-term reliability. Straightforward to install with a standard 1/2" NPT connection, it protects the generator's internal components from pressure-related stress and helps preserve consistent, safe steam performance session after session.

  • Precise 15 PSI Regulation – Reduces and stabilizes incoming water pressure to the 15-20 PSI range recommended for safe generator operation.
  • Balanced Piston Design – Delivers consistent downstream pressure control even as supply conditions fluctuate.
  • Corrosion-Resistant Bronze Construction – Sealed bronze body, bonnet, and stainless steel spring withstand sustained heat and moisture exposure.
  • Integral SS Strainer – Filters incoming water to help protect downstream components from sediment and debris.
  • 2-Year Limited Warranty – Manufactured and factory tested in the USA, backed by manufacturer warranty coverage for added confidence.
  • MPN: 104198
  • UPC: 767931910005
  • Compatibility: Mr.Steam MS and Steam@Home Series Residential Steambath Generators
  • Part Type: Pressure Reducing Valve
  • What's Included: (1) Pressure Reducing Valve
  • Set Pressure: 15 PSI
  • Maximum Supply Pressure: 300 PSIG
  • Temperature Range: 33°F – 180°F
  • Connection Size: 1/2" NPT
  • Dimensions: 5-7/8" H x 5-5/8" L x 2-3/4" W
  • Material: Bronze body and bonnet, stainless steel spring and strainer
  • Weight: 2 lb
  • Country of Origin: United States (per manufacturer; pricebook lists Italy — see flag)
  • Warranty: 2-Year Limited