Pressure regulator
FRU
Circulation regulator

Technical description
The DUNGS pressure regulator, type FRU, is a circulation regulator with adjustable setpoint spring. The pressure regulator complies with EN 88-1.
- Input pressures up to 150 mbar (15 kPa)
- High flow rate
- Sturdy, precise and sensitive regulation of regulator input pressure (response pressure)
- Inlet pressure compensation diaphragms
- Safety diaphragms
- External pulse as standard
- Rp 1/2 - Rp 2 threaded connection
- DN 40 - DN 100 flange connection

Application
The DUNGS pressure regulator, type FRU, limits the output pressure of a booster to the set value (response pressure) when consumption fluctuates. It does not contain any non-ferrous metals and is suitable for gases up to max. 0.1 vol.% H₂S, dry. Suitable for gases of families 1, 2, 3 and other neutral gaseous media.

Approval
EC type testing certificate as per:
• EC-Gas Appliances Regulation
FRU ... CE-0123CU1023

Approvals in other important gas consuming countries.

FRU Spring-loaded pressure regulator fitted with adjustable setpoint spring. Prepared for external pulse of regulator input pressure (blower output pressure). Suitable for limiting the regulator input pressure for blower-supported gas equipment in the range above atmospheric pressure.