
Aquatrol Valves
Aquatrol was founded in 1947 by Lyman J Lowden, who owned an engineering firm specializing in the development of municipal power, steam and water filtration systems. During LJ’s tenure he discovered a need within the safety and relief valve markets and founded our company. Aquatrol quickly became a recognized brand, focused on producing ASME regulated bronze safety and relief valves, servicing the OEM and quality driven Safety Valves, Relief Valves, Safety Relief Valves and Pressure Relief Valves from Aquatrolmarketplace.
COMPANY INFORMATION
AQUATROL VALVES SERIES 51
Product Description :
Adjustable Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 3/8 In., Outlet Size 1/2 In., Factory Set Pressure 50 psi, Pressure Range 0 to 100 psi, Disc Material Bronze, Overall Height 3 In., Application Liquids, Seat Material Bronze, Spring Material 316 Stainless Steel, Temp. Range 0 Degrees to 450 Degrees F.
Usages:
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Liquid relief and overprotection
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By-pass relief
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Continuous relief
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Pressure regulation
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Pumping systems, tanks and hydraulics
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Fluid lines
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Oil fields and chemical processing

AQUATROL VALVES SERIES 55
Product Description :
Adjustable Relief Valve, Body Material Bronze, Inlet Type MNPT, Outlet Type FNPT, Inlet Size 3/8 In., Outlet Size 1/2 In., Factory Set Pressure 50 psi, Pressure Range 0 to 100 psi, Disc Material Bronze, Overall Height 3 In., Application Liquids, Seat Material Bronze, Spring Material 316 Stainless Steel, Temp. Range 0 Degrees to 450 Degrees F.
Usages:
-
Liquid relief and overprotection
-
By-pass relief
-
Continuous relief
-
Pressure regulation
-
Pumping systems, tanks and hydraulics
-
Fluid lines
-
Oil fields and chemical processing

AQUATROL VALVES SERIES 69
Series 69 relief valves are calibrated (set to pressure) based on a range of flow-rates (GPM) versus seat size and set pressure. Standard valve is set to pressure to achieve flow rate maximum and minimums within each set pressure range. See capacity chart for details.
New (WR) wide range adjustable and available in 150 PSI increments.
Model Choices:
69A – Brass/bronze valve with stainless steel springs
69B – Brass/bronze valve with stainless steel seating inserts, disk and springs
69C – Stainless steel body / disk with bronze bonnet, stainless steel springs
Wide Range:
Series 69 is now available with a wider adjustable range (as an option). Valves are set to the mid-level pressure (or as specified). Typical wide-range is 150 PSI increments. Note: Flow rates are not showing on flow charts and vary by set pressure points.
Usages:
Include liquid by-pass, regulation, continuous relief and overprotection. Used on pumping stations, tanks, hydraulics, fluid / piping lines, oil fields, gas lines and more.

AQUATROL VALVES SERIES 88
Durable and economical choices for safety and relief applications.
Series 88 and 89 are multiple purpose safety valves for steam, air or gas protection. Designed for durability, yet an economical choice for safety and relief applications. UV stamped; factory set and sealed. Choose for a variety of applications.
Durable and economical choices for safety and relief applications.
Usages:
Over pressure protection, Pressure vessels, Piping systems, Tanks, Compressors, Dryers, Inter- and After-coolers.
Features:
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Adjustable tuned blow-down
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Precision lapped metal-to-metal seating
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Stainless steel springs
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Ruggedly constructed
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Closed seal hex cap or lever* option
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Wide variety of inlet and outlet options
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Disk-guided seat provides quick, accurate and excellent re-seating

AQUATROL VALVES SERIES 89
Durable and economical choices for safety and relief applications.
Series 88 and 89 are multiple purpose safety valves for steam, air or gas protection. Designed for durability, yet an economical choice for safety and relief applications. UV stamped; factory set and sealed. Choose for a variety of applications.
Durable and economical choices for safety and relief applications.
Usages:
Over pressure protection, Pressure vessels, Piping systems, Tanks, Compressors, Dryers, Inter- and After-coolers.
Features:
-
Adjustable tuned blow-down
-
Precision lapped metal-to-metal seating
-
Stainless steel springs
-
Ruggedly constructed
-
Closed seal hex cap or lever* option
-
Wide variety of inlet and outlet options
-
Disk-guided seat provides quick, accurate and excellent re-seating

AQUATROL VALVES SERIES 120
Essential for light- and medium-capacity situations where a smaller sized valve is needed. Not for use with liquid.
Usages:
High-quality Smaller Valves, Compressors, Receivers, Gas lines, Steam lines, Air and Gas receivers, Piping system/tanks, Steam cleaners, Sterilizers, Autoclaves
Features:
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Fixed blow-down
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Brass/bronze construction
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Metal-to-metal seating
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Rugged, yet economical
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Stainless steel springs
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Factory set and sealed
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Excellent seat tightness

AQUATROL VALVES SERIES 125
Essential for light- and medium-capacity situations where a smaller sized valve is needed. Not for use with liquid.
Usages:
High-quality Smaller Valves, Compressors, Receivers, Gas lines, Steam lines, Air and Gas receivers, Piping system/tanks, Steam cleaners, Sterilizers, Autoclaves
Features:
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Fixed blow-down
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Brass/bronze construction
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Metal-to-metal seating
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Rugged, yet economical
-
Stainless steel springs
-
Factory set and sealed
-
Excellent seat tightness

AQUATROL VALVES SERIES 130
Essential for light- and medium-capacity situations where a smaller sized valve is needed. Not for use with liquid.
Usages:
High-quality Smaller Valves, Compressors, Receivers, Gas lines, Steam lines, Air and Gas receivers, Piping system/tanks, Steam cleaners, Sterilizers, Autoclaves
Features:
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Fixed blow-down
-
Brass/bronze construction
-
Metal-to-metal seating
-
Rugged, yet economical
-
Stainless steel springs
-
Factory set and sealed
-
Excellent seat tightness

AQUATROL VALVES SERIES 135
Essential for light- and medium-capacity situations where a smaller sized valve is needed. Not for use with liquid.
Usages:
High-quality Smaller Valves, Compressors, Receivers, Gas lines, Steam lines, Air and Gas receivers, Piping system/tanks, Steam cleaners, Sterilizers, Autoclaves
Features:
-
Fixed blow-down
-
Brass/bronze construction
-
Metal-to-metal seating
-
Rugged, yet economical
-
Stainless steel springs
-
Factory set and sealed
-
Excellent seat tightness

AQUATROL VALVES SERIES 140
Aquatrol’s Series 140 (steam, air and inert gases) is a ball-seated safety valve used for applications where higher capacity may be required with a smaller valve. Designed, tested and built for heavy-duty applications.
Features:
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Economical
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Fixed blowdown
Applications:
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Pressure relief, overpressure protection
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Higher capacity levels
