FISHER Control Valve MR98

Available back-pressure structure 

MR98L: Set pressure range of 2 to 38 psig / 0.14 to 2.6 bar

MR98H: Set pressure range of 15 to 200 psig / 1.0 to 13.8 bar

MR98HH: Set pressure range of 150 to 375 psig / 10.3 to 25.9 bar 

Available differential pressure structure 

MR98LD: Set pressure range of 2 to 38 psi / 0.14 to 2.6 bar; differential pressure of 150 psi / 10.3 bar

MR98HD: Set pressure range of 15 to 200 psi / 1.0 to 13.8 bar; differential pressure of 300 psi / 20.7 bar 

Available with high differential pressure structure 

MR98HDP: Set pressure range of 15 to 200 psi / 1.0 to 13.8 bar; Differential pressure of 600 psi / 41.4 bar

MR98HHD: Set pressure range of 150 to 375 psi / 10.3 to 25.9 bar; Differential pressure of 400 psi / 27.6 bar 

Material of valve body and spring box body 

Gray cast iron

WCC steel

LCC steel Stainless steel

Special alloys: Monel?, Hastelloy? C, aluminum bronze

For information on special alloys, please contact the sales office. 

Valve body size and end connection method 

1/4 in

1/2 in/ DN 15

3/4 and 1 inch / DN 20 and 25

1-1/2 and 2 inches / DN 40 and 50 (excluding MR95L and MR95LD types) 

End connection method 

NPT, SWE, and welding and integrated CL150 RF, CL300 RF, CL600 RF, and PN 16/25/40 RF; all are 14-inch face-to-face (EN flange type - 356 mm face-to-face) 

Entry pressure 

600 psig / 41.4 bar 

Outlet pressure 

400 psig / 27.6 bar 

Pressure measurement method 

Internal pressure tapping or external pressure tapping 

Weight of the MR98H series 

1/4 NPT body: 5 lb / 2.3 kg

1/2-inch / DN 15 body: 10 lb / 4.5 kg

3/4 and 1-inch / DN 20 and 25 bodies: 22 lb / 10 kg

1-1/2 and 2-inch bodies / DN 40 and 50: 55 lb / 25 kg 

The approximate weight of the MR98L series 

1/4 inch NPT body: 7 lb / 3.2 kg

1/2-inch / DN 15 body: 15 lb / 6.8 kg

3/4-inch and 1-inch / DN 20 and 25 bodies: 35 lb / 16 kg