The Types MR98L, MR98H, and MR98HH are direct-operated and spring-loaded. The Types MR98LD, MR98HD, and MR98HHD use additional pressure loading to maintain relief differential pressures, backpressures or for remote setpoint adjustment
Body and Spring Case Materials: Gray Cast Iron, WCC Steel, LCC Steel, Stainless Steel, (Special Alloys: Monel®, Hastelloy® C, Aluminum-Bronze - P.O.A.)
Body Sizes:1/4 NPT, 1/2-inch / DN 15, 3/4-inch / DN 20, 1-inch / DN 25. 1-1/2-inch / DN 40, 2-inch / DN 50
End Connection:NPT, SWE, Welded CL150 RF, Welded CL300 RF, Welded PN 16/25/40 RF, Integral CL150 RF, Integral CL300 RF, Integral PN 16/25/40 RF
Maximum Inlet Pressure 400 psig / 27.6 bar Maximum Outlet Pressure400 psig / 27.6 bar