The Pressure Regulating Hydrant valve(PRH) is a product of Fireproducts AS. The PRH is designed to control the opening status of the PRH and as a result the pressure. The PRH also has a built in isolation valve that can close / open the PRH. The Pressure Regulating Hydrant also comes with a notch that can be drilled and threaded. This can be used for monitoring or a chemical inlet mixture, like AFFF mixture etc. The PRH has a flexible outlet connection type. A number of different connections can be applied.

Regulating
The PRH has a built in regulating system to ensure a stable pressure of the outlet flow.

Foam inlet option
The PRH has 2 pcs connections meant for monitoring or induction of chemicals like AFFF etc.

Override function
The PRH has an override function. You can use a key to override the pressure regulating function. The valve function is then as a normal non-regulating valve. The key is marked with red color

Approval / Test
DNV and BV type approved for both 150 and 300 lb type.
• BUREAU VERITAS Rules for the Classification of Steel Ships
• BUREAU VERITAS Rules for the Classification of Offshore Units
• DNVGL-OS-D101 – Marine and machinery systems and equipment

Edition January 2018
• DNV GL rules for classification – Ships Pt.4 Ch.6 Piping systems
• DNV GL class programme DNVGL-CP-0186 – Type approval – Valves

Designed according to : BS5041-1
Are approved for :
• For ship installations (DNV GL-RU-SHIP Pt.4 Ch.6):
• For offshore marine and machinery systems and equipment (DNV GL-OS-D101):

Tested according to EN12266-1
Shell test : 1,5 x PN
Seat test : 1,1 x PN