Prevost ALTO 4 Air Pressure Regulator — 3/4" & 1" FNPT, 7–145 PSI
type: Product
description: The Prevost ALTO 4 air pressure regulator holds a steady downstream pressure on high-flow 3/4" and 1" lines. ALTO 4 is the large-body size in the Prevost ALTO air-preparation range, picking up where the smaller Prevost ATU regulators leave off at 1/2". A relieving diaphragm design vents excess downstream pressure when you dial the setting back, so the regulator responds immediately instead of locking in the higher pressure. The knob locks by pushing down, and a 1/4" gauge port lets you mount a gauge on either side. The modular ALTO 4 body stacks with the matching ALTO 4 filter and lubricator to build a 3/4" or 1" FRL train. Specifications Port sizes: 3/4" FNPT and 1" FNPT Flow rate: 177 CFM (3/4") / 212 CFM (1") at 87 psi, ΔP = 14 psi Adjustment range: 7 to 145 psi Regulator type: Relieving diaphragm, lockable knob Gauge port: 1/4" (gauge sold separately) Body: Aluminum alloy Series: Prevost ALTO 4 air treatment module Available Variants & SKUs SKU Port Size Flow Rate TR 204 3/4" FNPT 177 CFM at 87 psi (ΔP = 14 psi) TR 205 1" FNPT 212 CFM at 87 psi (ΔP = 14 psi) Flow ratings are taken from the Prevost 2026 US price list. Need a filter and regulator in one body? See the Prevost ALTO 4 filter-regulator.
brand: Prevost
sku: TR 204
additional property: Size
  type: PropertyValue
  value: 3/4" FNPT | 177 CFM, 1" FNPT | 212 CFM
offers: AggregateOffer
  low price: 173.76
  high price: 180.47
  price currency: USD
  offer count: 2
  offers: Offer
    price: 173.76
    price currency: USD
    availability: https://schema.org/InStock
    item condition: https://schema.org/NewCondition
    shipping details: OfferShippingDetails
    sku: TR 204
  offers: Offer
    price: 180.47
    price currency: USD
    availability: https://schema.org/InStock
    item condition: https://schema.org/NewCondition
    shipping details: OfferShippingDetails
    sku: TR 205

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