Product Information
Kingston Low Profile Safety Valve
Sizes: 1/4″
Pressure Range: 5 – 300
Application: Compressed Air Systems
Kingston Model 128AT Low Profile Safety Valve is a pop-style safety valve constructed from brass and feature a Buna-N Disc on a brass seat. The Model 128 series is a low profile, low flow valve. Same design as Model 128A but with a toggle for latching open.
Pull Ring Option (128AP) and Viton Option (128AF) available.
Set pressure range 5 to 300 psi (5 psi increments only)
Maximum temperature -40°F to 225°F
Additional Information
| Model Family | 128AT |
|---|---|
| Inlet size | 1/4″ |
| Inlet Orifice | 0.235 |
| Height | 1-7/8″ |
| Hex | 5/8″ |
| Pressure Range | 5-300 |
| Approx. Shipping Weight | 2.2 oz |
| Max Temp | 225 |
| Valve Types | Safety Valves |
| Applications | Compressed Air Systems |
| Features | Stainless Steel |
Specifications:
| Model Name | Inlet Size | Inlet Orifice | Height | Hex | Pressure Range | Approx. Shipping Weight | Min Temp | Max Temp |
|---|---|---|---|---|---|---|---|---|
| 128AT | 1/4″ | 0.235 | 1-7/8″ | 5/8″ | 5-300 | 2.2 oz. | -40°F | 225°F |
Detail Features:
- Pop-style Safety Valve
- Precision Machined with Soft Seat
- Available in 1/4″ NPT
- Set Pressure Range: 5-300 PSIG
- Temperature Range: -40°F to 225°F
- Small Air Systems Valve
- Stainless steel or music wire spring depending on set pressure
Related Products
Model 128A
Kingston Low Profile Safety Valve
Sizes: 1/8″, 1/4″
Pressure Range: 5 – 100, 2 – 300
Application: Compressed Air Systems
Kingston Model 128A Low Profile Safety Valve is a pop-style safety valve constructed from brass and feature a Buna-N Disc on a brass seat. Silicone and Viton options are available.
Pull Ring Option (128AP) and Viton Option (128AF) available.
Maximum Temperature Range: -40°F to 225°F
Model 119CSS
Kingston ASME Code High Capacity Safety Valve
Sizes: 1/4″,1/2″,3/4″,1″
Pressure Range: 25 – 300
Application: Compressed Air Systems
The Kingston Model 119CSS High Capacity Safety Valve is an ASME Code Certified, precision machined brass valve with a hard seat. This valve supports ASME Code applications up to 300 psi. It also features a stainless steel ball for durability and a lever for manual testing. Kingston Model 119CSS High Capacity Safety Valve is designed to flow extremely high volumes.
Internal construction and performance are the same as Model 118CSS differing only by the lever used for manual testing. The Kingston Model 119CSS Safety Valve, like every Kingston Safety Valve, is set and tested at factory for quality and dependability. The Kingston Model 119CSS Safety Valve approved in Massachusetts and Washington DC and is stamped with UV & NB symbols. Registered in all Canadian provinces and territories.
Set pressure range 25 to 300 psi (5 psi increments only).
Maximum temperature 400°F
Model KSV10
Kingston ASME Code Low Profile Safety Valve
Sizes: 1/8″,1/4″
Pressure Range: 50 – 275
Application: Compressed Air Systems
The Kingston Model KSV10 ASME Code Low Profile Safety Valve is an ASME Code Certified, precision machined valve with a soft seat. Compact in size yet providing high flow capacities, the Kingston Model KSV10 ASME Code Low Profile Safety Valve has been designed with the small air system in mind. All Brass construction and a resilient silicone disc provides a bubble-tight seal below reseating pressure. Bodies are stamped with both the UV and NB symbols. Set pressure range 50 to 275 psi (5 psi increments only).
Model 100SS
Kingston Safety Valve
Sizes: 1/8″,1/4″,3/8″,1/2″
Pressure Range: 5 – 100, 5 – 300 (5 psi increments only)
Maximum Temperature: 400°F
Application: Compressed Air Systems
The Kingston Model 100SS Safety Valve is precision machined with hard seat. This pop-style safety valve is constructed from brass and features a stainless steel ball on a brass seat. Crisp popping action at all settings. The Kingston Model 100SS Safety Valve has been in production for almost one hundred years and has proved to be both durable and reliable.
Model 103H-2
Kingston Soft-Seated Side Outlet Relief Valve
Sizes: 1/4″
Pressure Range: 5 – 500
Application: Compressed Air Systems
The Model 103H Safety Relief Valve has the same construction as the Model 103 valve, with the exception of a stainless steel base and seat. The Model 103H can be used on some non-code air applications.
KNG 741
Kingston KNG 741 Side Outlet Relief Valve – ASME Section VIII – NB Certified for Liquid, Air/Gas, and Steam
Sizes: 1/2″ to 3″
Pressure Range: 5 – 1500 PSI (Liquid & Air); 5 – 300 PSI (Steam)
Application: Pressure Vessels, Pumps, Hydraulics, Tanks, Steam Systems, Chemical, Cryogenic, Air and Gas Compressors, Separators, By-pass and Over Pressure Protection. Choose for most industrial applications requiring a safety relief valve.
The KNG 740 Series Safety and Relief Valve is designed for accuracy and reliability. Engineering for heavy-duty industrial usage. Multiple purpose safety and relief valve for all services: Liquid, Steam, and Air/Gas. ASME and National Board Certified for Section VIII service. Pressures up to 1500 PSI. Available with the full array of metal and seating options.
KNG 740 Series- Brass, bronze construction and stainless steel ring, seat (disk) and springs. ASME Section VIII to 1500 PSI for air/gas and liquid and 300 PSI for steam services
KNG 741 Series- Stainless steel nozzle, ring, disk, and spring. Bronze bonnet, and body. ASME Section VIII to 1500 PSI for liquid and air/gas. 300 PSI for steam.
KNG 742 Series- Stainless steel nozzle, ring, disk and springs. Carbon steel body and bonnet. Rating same as 741. Used as an all steel option.
KNG 743 Series- Same as 742, with stainless steel bonnet, body and components. Used where a stainless steel valve is required.
KNG 560
Kingston Side Outlet Relief Valve – ASME Section I and Section VIII – NB Certified for Liquid,
Air/Gas, and Steam
Sizes: 1/2″ to 2-1/2″
Pressure Range: 5 – 300 PSI (Air/Gas); 5 – 250 PSI (Steam)
Application: Steam Boilers, Air compressors, Dryers, Receivers, Pressure Vessels, Piping Systems, Accumulators, Reducing Stations, Tanks, Inter/After Coolers, Cooking Equipment, Autoclaves, Sterilizers, or whatever higher capacity pressure protection or relief may be required.
The KNG 560/570 Series Valves Lines is a high capacity safety valves used for boilers, piping lines, and vessel protection. Designed and engineered for heavy-duty industrial use, ASME approved and National Board flow-rated for capacity.
KNG 560 Series- Used for ASME Section I applications to pressure ratings of 250 PSI. {UV} and {NB} stamped for fired vessels. Boilers, or most areas where steam safety valves are required.
KNG 570 Series- Used for ASME Section VIII applications to pressure ratings of 300 PSi. {UV} and {NB} stamped for unfired vessel protection. Used for many applications to protect or relieve pressure for Air, Gas, or Steam
KNG 563-573 Series- Stainless steel wetted trimming.
KNG 743
Kingston KNG 743 Side Outlet Relief Valve – ASME Section VIII – NB Certified for Liquid, Air/Gas, and Steam
Sizes: 1/2″ to 3″
Pressure Range: 5 – 1500 PSI (Liquid & Air); 5 – 300 PSI (Steam)
Application: Pressure Vessels, Pumps, Hydraulics, Tanks, Steam Systems, Chemical, Cryogenic, Air and Gas Compressors, Separators, By-pass and Over Pressure Protection. Choose for most industrial applications requiring a safety relief valve.
The KNG 743 Series Safety and Relief Valve is designed for accuracy and reliability. Engineering for heavy-duty industrial usage. Multiple purpose safety and relief valve for all services: Liquid, Steam, and Air/Gas. ASME and National Board Certified for Section VIII service. Pressures up to 1500 PSI. Available with the full array of metal and seating options.
KNG 740 Series- Brass, bronze construction and stainless steel ring, seat (disk) and springs. ASME Section VIII to 1500 PSI for air/gas and liquid and 300 PSI for steam services
KNG 743 Series- Stainless steel nozzle, ring, disk, and spring. Bronze bonnet, and body. ASME Section VIII to 1500 PSI for liquid and air/gas. 300 PSI for steam.
KNG 742 Series- Stainless steel nozzle, ring, disk and springs. Carbon steel body and bonnet. Rating same as 741. Used as an all steel option.
KNG 743 Series- Same as 742, with stainless steel bonnet, body and components. Used where a stainless steel valve is required.
Model 112CSS
Kingston ASME Code Safety Valve
Sizes: 1/4″,3/8″,1/2″
Pressure Range: 25 – 300
Application: Compressed Air Systems,Steam Applications
The Kingston Model 112CSS Safety Valve is an ASME Code Certified, precision machined brass valve with a hard seat. This valve supports ASME Code applications up to 300 psi. It also features a stainless steel ball for durability and a pull ring for manual testing. As Kingston’s most popular valve, it is suited for a wide variety of applications. Alternative versions to the Kingston Model 112CSS are available in electroless nickel plating, Model 112CSSEN and all Stainless Steel, Model 112CR. Any version of the Kingston Model 112C Series Safety Valve can be delivered with an ASME certified steam rating. The Kingston Model 112CSS Safety Valve, like every Kingston Safety Valve, is set and tested at factory for quality and dependability. The Kingston Model 112CSS Safety Valve is approved in Massachusetts and Washington DC and is stamped with UV & NB symbols. Registered in all Canadian provinces and territories.
Set pressure range 25 to 300 psi (5 psi increments only)
Maximum temperature 400°F
Model 103D-2
Kingston High Pressure Side Outlet Relief Valve
Sizes: 1/4″
Pressure Range: 10 – 1000
Application: Compressed Air Systems
The Model 103D Safety Relief Valve has the same construction as the Model 103, with the exception of a stainless steel base and seat. This valve can be used on some non-code air applications.
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