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Brush Research NH-3 old style copper injector valve 1.750 major diameter

Brush Research

Brush Research NH3O NH-3 Old Style Copper/Injector Valve 1.750" Major

SKU CH-752V-47VMN

A copper/injector valve for NH-3 old-style systems with a 1.750" major diameter

  • Old-style copper injector valve fits 1.750" major bore
  • New condition ensures reliable cleaning performance
  • Brush Research brand built for automotive plumbing use
  • California Prop 65 warning: contains cancer-linked chemical
  • California Prop 65 warning: contains reproductive-harm chemical

Copper Injector Valve for NH-3 Systems

The Brush Research NH3O NH-3 Old Style valve is built for copper injector cleaning in automotive and plumbing applications. It fits systems that require the 1.750" major dimension and is supplied new from the manufacturer.

Sustained cleaning cycles without pressure loss

The valve maintains consistent flow during extended cleaning sessions rather than short bursts. Its construction supports repeated exposure to cleaning media while preserving sealing integrity over the full service interval.

Prop 65 notice and direct manufacturer supply

California Proposition 65 warnings apply because the product contains chemicals identified as causing cancer and birth defects or reproductive harm. Orders of $75 or more ship free direct from the manufacturer, simplifying replenishment for workshop inventories.

Highlights

  • Old-style copper injector valve fits 1.750" major bore
  • New condition ensures reliable cleaning performance
  • Brush Research brand built for automotive plumbing use
  • California Prop 65 warning: contains cancer-linked chemical
  • California Prop 65 warning: contains reproductive-harm chemical

Specifications

BrandBRUSH RESEARCH

Questions about this item

Will the NH-3 Old Style valve generate noticeable noise, heat or power draw during continuous operation?

The NH-3 Old Style is a passive copper/injector valve with no moving parts, motor or electrical supply, so it produces no noise, no heat and draws zero power when installed.

What existing plumbing components must I already have for the 1.750" major valve to connect and seal properly?

You need a matching 1.750" female port or coupling with compatible thread pitch and a suitable sealant or gasket rated for the fluid type.

How does the NH-3 Old Style copper valve behave when paired with older steel or brass fittings still in the system?

Copper against dissimilar metals can create a galvanic cell; use dielectric unions or isolating bushings to prevent accelerated corrosion of the older fittings.

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