ตัวแทนจำหน่าย Fisher by Emerson MR98 Series | Backpressure Regulators, Relief, and Differential Relief Valves ในประเทศไทย
The Fisher MR98 Series regulators are designed for reliable backpressure and relief control across a variety of fluid types including liquid, gas, air, and steam.
Model Variants
MR98L, MR98H, MR98HH
• Direct-operated and spring-loaded versions for standard backpressure or relief applications.
MR98LD, MR98HD, MR98HDP, MR98HHD
• Pressure-loaded models for more precise relief differential control, stable backpressure maintenance, or remote setpoint adjustment.
Features
Versatile Application Use
• Controls backpressure on pumps
• Maintains differential pressure across lubricated seals
• Regulates steam header and fuel oil pressures
• Used in air supply systems, pump bypass lines, flash tanks, and accumulator relief systems
Wide Material Compatibility
• Diaphragms: Available in stainless steel, Monel®, Hastelloy® C, and elastomers
• Body materials: Gray cast iron, carbon steel, stainless steel, aluminum-bronze, Hastelloy® C, and Monel®
• Corrosion-resistant trim options available
Precise and Stable Regulation
• Diaphragm is isolated from the main flow
• Slotted valve plug and pusher post ensure positive guiding for accurate shutoff
Compact and Easy to Install
• Small form factor ideal for space-constrained environments
Differential Pressure Control
• Pressure-loaded designs (MR98LD, MR98HD, MR98HDP, MR98HHD) support advanced differential or remote setpoint control
User-Friendly Adjustments
• Handwheel included on pressure-loaded models and available on select standard models for easy pressure setpoint changes
Special Capabilities
Sour Gas Service
• Meets NACE MR0175/ISO 15156, MR0103 standards for sour gas compatibility
• Optional material selection for safe use in corrosive environments
Low-Temperature Performance
• Arctic-ready designs function in temperatures as low as –76°F / –60°C
Meets API Standards
• Compliant with API 614 requirements when constructed in steel/stainless steel with stainless steel trim
Sanitary Options
• FDA/USP Class VI and ADI-free EPDM elastomer options available for clean service applications (wetted parts only)
Hydrogen Ready
• Fully evaluated for hydrogen use: tested for material compatibility, permeation, leakage, and embrittlement resistance
Specifications
Available Backpressure Constructions
• MR98L: 2 to 38 psig / 0.14 to 2.6 bar set pressure range
• MR98H: 15 to 200 psig / 1.0 to 13.8 bar set pressure range
• MR98HH: 150 to 375 psig / 10.3 to 25.9 bar set pressure range
Available Pressure Differential Constructions
• MR98LD: 2 to 38 psi / 0.14 to 2.6 bar set pressure range; max differential 150 psi / 10.3 bar
• MR98HD: 15 to 200 psi / 1.0 to 13.8 bar set pressure range; max differential 300 psi / 20.7 bar
Available High Pressure Differential Constructions
• MR98HDP: 15 to 200 psi / 1.0 to 13.8 bar set pressure range; max differential 600 psi / 41.4 bar
• MR98HHD: 150 to 375 psi / 10.3 to 25.9 bar set pressure range; max differential 400 psi / 27.6 bar
Body and Spring Case Materials
• Gray Cast Iron
• WCC Steel
• LCC Steel
• Stainless Steel
• Special Alloys: Monel®, Hastelloy® C, Aluminum-Bronze
• Contact Sales Office for Special Alloys
Body Size and End Connection Styles
• 1/4-inch
• 1/2-inch / DN 15
• 3/4 and 1-inch / DN 20 and 25
• 1.1/2 and 2-inch / DN 40 and 50 (not available for Types MR95L and MR95LD)
End Connection Styles
• NPT, SWE, and Welded and Integral CL150 RF, CL300 RF, CL600 RF, and PN 16/25/40 RF; all with 14-inch face-to-face (EN flanged-356 mm face-to-face)
Maximum Inlet Pressure
• 600 psig / 41.4 bar
Maximum Outlet Pressure
• 400 psig / 27.6 bar
Pressure Registration
• Internal or External
MR98H Series Approximate Weights
• 1/4 NPT body: 5 lb / 2.3 kg
• 1/2-in / DN 15 body: 10 lb / 4.5 kg
• 3/4 and 1-in / DN 20 and 25 bodies: 22 lb / 10 kg
• 1.1/2 and 2-in bodies / DN 40 and 50: 55 lb / 25 kg
MR98L Series Approximate Weights
• 1/4 NPT body: 7 lb / 3.2 kg
• 1/2-in / DN 15 body: 15 lb / 6.8 kg
• 3/4 and 1-in / DN 20 and 25 bodies: 35 lb / 16 kg
Additional Technical Data
• For additional technical information, contact your local Sales Office or refer to technical documentation.
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