We may earn a small commission on purchases made through our links.

Find any Amazon.com product's deals and best prices with our free Amazon deal finder and price tracker. Simply paste the product link (URL) or search by name in the box above. You'll get full product information, Deal Score, and all current deals. Shop smarter with the best Amazon deals finder in the USA.

x
Sorry, Something went wrong!
Otoolling

1/2" X 3/4" Adjustable Pressure Relief Valve 100-300 Psi Poppet

✅ In stock
F
Grade
💤 Not a Deal
0/100
Current Price
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
$39.99
Listed $43.99
Save $4.00 9% OFF
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Oct 20, 2026 10:08 PM · Prices & availability subject to change

Is This a Good Price on Amazon?

💤 Not a Deal
  • 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
  • ➡️Pricing has held fairly steady, with no strong push in either direction.

How We Scored This Deal

Price Competitiveness 0/28
Recent Value 0/22
Market Standing 0/20
Deal Strength 0/20
Momentum 0/10

📝 Product Overview

🏪 Sold by Huiessa
📦 Fulfillment Fulfilled by Amazon
🚚 Shipping Free Shipping

Product Details

✓Precise Pressure Control: this poppet style adjustable relief valve features a calibrated adjustment knob, allowing exact pressure settings from 100 to 300 psi (6.9–20.7 bar) for systems with water, oil, or air
✓Standard Npt Threads for Easy Installation: with 3/4" NPT male inlet and 1/2" NPT female outlet, this NPT pressure relief valve fits most piping systems; The O-ring design minimizes leakage risks; Note: please check the size before purchasing
✓Heavy-duty Brass Construction: made of solid brass for corrosion resistance, this pressure relief valve ensures long-term reliability in high-pressure environments up to 300 psi
✓Versatile Media Compatibility: this adjustable pressure relief valve can be applied to water, hydraulic oil, or compressed air systems, offering flexible pressure management
✓Wide-range Pressure Adjustment: ideal for industrial and residential use, this air pressure relief valve and water pressure relief valve covers a broad range (100–300 psi), making it suitable for boilers, compressors, and hydraulic systems; Always verify system requirements before installation

⚙️ Specifications

Material
Brass
Brand
Otoolling
Item dimensions L x W x H
3.07 x 1.5 x 1.1 inches
Exterior Finish
Brass
Inlet Connection Size
0.75 inches
Outlet Connection Type
NPT
Maximum Operating Pressure
300 psi
Number of Ports
2
Outlet Connection Size
0.5 inches
Number of Packs
1
Brand Name
Otoolling
F
$39.99
Check Deal →