Direct Spring Operated Pressure Relief Valves

Model
Brand
Pressure
Type
Size
Crosby
Up to 2700.6 psig
Spring Operated
NPS 1-6
Kunkle Valve
N/A
Safety Relief
NPS ½-1
Kunkle Valve
N/A
Safety Relief
NPS ½-2
Kunkle Valve
N/A
Safety Relief
NPS ½-6
Kunkle Valve
N/A
Safety Relief
NPS 1-3

Chlorine Service Direct Spring

Model
Brand
Pressure
Type
Size
Crosby
Up to 450 psi
Steam
NPS 1½-3

Large Orifice Direct Spring

Model
Brand
Pressure
Type
Size
Crosby
25 to 300 psig
Spring Operated
10x14 - 20x24

Portable Thermal Relief

Model
Brand
Pressure
Type
Size
Sempell
Up to 580 psi
Spring Operated
NPS ½-1
Crosby
N/A
Steam
NPS ¾-1
Sapag
Up to 5004 psi
N/A
NPS ½-2
Sapag
Up to 4989.3 psig
Spring Operated
NPS ½-2
Anderson Greenwood
Up to 10000.35 psig
Spring Operated
NPS ½-2
Crosby
Up to 1499.69 psig
Spring Operated
NPS ¾-2

Power Actuated Relief Valves

Model
Brand
Pressure
Type
Size
Sempell
Up to 5076 psi
Electro-Pneumatic
NPS 2½-4

Process Direct Spring Valves

Model
Brand
Pressure
Type
Size
Crosby
Up to 9993.1 psig
Spring Operated
NPS 1-8
Crosby
Up to 580.15 psig
Spring Operated
NPS 1-4
Sapag
Up to 6092 psi
N/A
NPS 1-12
Sapag
Up to 6001.52 psig
Spring Operated
NPS 1-10

Sanitary Direct Spring

Model
Brand
Pressure
Type
Size
Crosby
Up to 125 psi
Steam
NPS 3-4

Steam Safety Direct Spring

Model
Brand
Pressure
Type
Size
Sapag
N/A
N/A
NPS 4-24
Kunkle Valve
N/A
Spring Operated
NPS 2-8
Kunkle Valve
Up to 1000.76 psig
Spring Operated
N/A
Kunkle Valve
Up to 249.47 psig
Spring Operated
N/A
Kunkle Valve
Up to 159.54 psig
Safety Relief
N/A
Kunkle Valve
Up to 400.3 psig
Spring Operated
N/A
Kunkle Valve
Up to 249.47 psig
Spring Operated
N/A
Sapag
Up to 3046 psi
N/A
NPS 1½-8

Utility Relief

Model
Brand
Pressure
Type
Size
Kunkle Valve
Up to 4003.04 psig
Spring Operated
N/A
Kunkle Valve
Up to 300.23 psig
Spring Operated
N/A
Kunkle Valve
Up to 3300 psig
Spring Operated
N/A
Kunkle Valve
Up to 59.47 psig
Spring Operated
N/A
Kunkle Valve
Up to 3292.36 psig
Spring Operated
N/A
Kunkle Valve
Up to 400.3 psig
Spring Operated
N/A
Kunkle Valve
N/A
Spring Operated
N/A
Kunkle Valve
Up to 400.3 psig
Spring Operated
N/A
Kunkle Valve
Up to 1399.61 psig
Safety Relief
N/A
Kunkle Valve
Up to 300.23 psig
Safety Relief
N/A
Kunkle Valve
Up to 1499.69 psig
Safety Relief
N/A
Kunkle Valve
N/A
Spring Operated
N/A
Kunkle Valve
Up to 14.5 psig
Spring Operated
N/A
Kunkle Valve
N/A
Spring Operated
N/A