Service valve: The service valve on the DH55/60 has a maximum operating pressure of 29.4 MPa (4,261 psi) and a maximum flow rate of 119 L/min (31.4 gal/min).
Negative relief valve: The negative relief valve on the DH55/60 has a maximum operating pressure of 29.4 MPa (4,261 psi) and a maximum flow rate of 119 L/min (31.4 gal/min).