Data Sheet

Bulletin 71.4:MR98
39
Ordering Guide (continued)
Body Size (Select One)
 1/4 NPT
(1)
 1/2 in. / DN 15
 3/4 in. / DN 20
 1 in. / DN 25
 1-1/2 in. / DN 40 (not available for MR98L Series)
 2 in. / DN 50 (not available for MR98L Series)
Body Material and End Connection Style
(See Tables 1 and 2, Select One)
Gray Cast Iron
 NPT***
WCC Steel
 NPT***
 SWE**
 Welded CL150 RF**
 Welded CL300 RF**
 Welded PN 16/25/40**
LCC Steel
 NPT***
 SWE**
 Welded CL150 RF**
 Welded CL300 RF**
 Welded PN 16/25/40**
CF8M Stainless steel
 NPT***
 SWE**
 Welded CL150 RF**
 Welded CL300 RF**
CF3M Stainless steel
 NPT***
 SWE**
 Welded CL150 RF**
 Welded CL300 RF**
 Welded PN 16/25/40**
 Integral CL150 RF
(2)
*
 Integral CL300 RF
(2)
*
 Integral PN 16/25/40
(2)
*
Hastelloy
®
C
 NPT*
 Integral CL150 RF
(2)
*
 Integral CL300 RF
(2)
*
 Integral PN 16/25/40 RF
(2)
*
Monel
®
 NPT*
 Integral CL150 RF
(2)
*
 Integral CL300 RF
(2)
*
 Integral PN 16/25/40 RF
(2)
*
Aluminum-Bronze
 Integral CL150 RF
(2)
*
 Integral CL300 RF
(2)
*
 Integral PN 16/25/40 RF
(2)
*
Spring Case Material (Select One)
 Gray Cast Iron (standard for Gray cast
iron bodies)***
 WCC Steel (standard for Steel or Stainless
steel bodies)***
 LCC Steel***
 CF8M Stainless steel (optional for Stainless
steel bodies)**
 Monel
®
 Hastelloy
®
C
Diaphragm
 Neoprene (CR) (standard for elastomer seat)***
 302 Stainless steel (standard for metal seat)***
 Fluorocarbon (FKM)***
 Ethylenepropylene (EPDM)*
 Hastelloy
®
C*
 Monel
®
*
Trim Number (See Table 4, Select One)
 Trim 1
 Trim 2
 Trim 3
 Trim 4
 Trim 5
 Trim 6
 Trim 7
 Trim 8
 Trim 9
 Trim 10
 Trim 11
Relief/Differential Relief Pressure Range (Select One)
Type MR98L or MR98LD
Steel, 1/4 NPT to 1 in. / DN 25 Bodies
 2 to 7 psig/psi / 0.14 to 0.48 bar
 6 to 14 psig/psi / 0.41 to 0.97 bar
 12 to 25 psig/psi / 0.83 to 1.7 bar
 20 to 38 psig/psi / 1.4 to 2.6 bar
Stainless steel, 3/4 and 1 in. / DN 20 and 25 Bodies
 2 to 7 psig/psi / 0.14 to 0.48 bar
 6 to 14 psig/psi / 0.41 to 0.97 bar
 12 to 25 psig/psi / 0.83 to 1.7 bar
Type MR98H or MR98HD
Steel
1/4 NPT to 1 in. / DN 25 Bodies
 15 to 35 psig/psi / 1.0 to 2.4 bar
 25 to 75 psig/psi / 1.7 to 5.2 bar
 70 to 140 psig/psi / 4.8 to 9.7 bar
 130 to 200 psig/psi / 9.0 to 13.8 bar
1. Available in threaded (NPT) end connection only.
2. Integral anges are available for MR98H Series only.
Hastelloy
®
C is a mark owned by Haynes International, Inc.
Monel
®
is a mark owned by Special Metals Corporation.
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