ตัวแทนจำหน่าย Fisher by Emerson 299H Series Pressure Reducing Regulators ในประเทศไทย
The Fisher 299H Series consists of high-performance, pilot-operated pressure reducing regulators designed for distribution, commercial, and industrial applications. These regulators are capable of handling inlet pressures up to 175 psig (12.1 bar) while providing precise downstream pressure control and reliable performance across varying flow conditions.
• Type 299HV combined with Type VSX8 provides automatic gas shutoff when needed.
• Type 299HR features an integral token relief to signal downstream overpressure.
• Type 299HVR includes an internal token relief valve to relieve minor overpressure caused by thermal expansion.
Features
Compact Design
• Integrates the pilot and registration system into a single compact unit, reducing installation space requirements.
Innovative No-Bleed Monitor System
• Allows bleed gas to be directed into the intermediate line, eliminating downstream emissions and reducing gas losses. This design also ensures system lockup pressure aligns with the working regulator instead of the monitor.
Purpose-Built Construction
• Not a retrofit of existing models—designed from the ground up with integrated cases and internal registration ports for enhanced performance and reliability.
Versatile Applications
• Ideal for natural gas distribution, industrial boilers, furnaces, mixers, ovens, and plant air service systems.
Certified Quality
• Manufactured in accordance with ISO 9001 standards, ensuring consistent product quality and performance.
Accurate Pressure Control
• Maintains stable downstream pressure even under varying flow conditions. Helps reduce the need for pressure-compensating meters by providing steady pressure to downstream equipment.
Integral Token Relief (Optional)
• Types 299HR and 299HVR are equipped with internal token relief to vent minor overpressure events caused by thermal expansion.
High-Capacity Regulation
• The actuator diaphragm reacts rapidly to downstream pressure changes, adjusting the main valve position accordingly. The pilot responds simultaneously, enabling full valve travel for maximum flow capacity.
Flexible Registration Options
• Easily convert between internal, external, or dual registration using just two screws and O-rings.
No Special Startup Procedure
• Simplified startup with no additional procedures required.
Ease of Maintenance
• Inspect and service the main valve disk and orifice without removing the regulator from the pipeline. The actuator and pilot can be detached quickly using a two-bolt flange.
Labor-Saving Installation
• The pilot is factory-piped directly from the inlet side of the main valve, eliminating the need for a separate pilot supply line in standard setups.
Durable Construction
• Built with no union ring and a secure two-bolt connection, the 299H Series ensures a longer service life with reduced maintenance requirements.
No Gaskets Required
• Uses reusable O-rings at all serviceable joints, minimizing downtime and parts costs.
Startup Overpressure Protection
• Both the main valve and pilot include features to prevent damage from reverse pressure or sudden pressure increases during startup.
Reduced Spare Parts Inventory
• With fewer components required, the 299H Series reduces the need for a large spare parts inventory.
Specifications
Body Sizes and End Connection Styles
• Sizes: NPS 1-1/4, NPS 1-1/2, NPS 2 / DN 50
• Connections: NPT, CL125 FF Flanged, CL250 RF flanged, PN 10/16 flanged
Maximum Operating Inlet Pressure by Orifice Size
• 1/4 x 3/8 in. / 6.4 x 9.5 mm : 175 psig / 12.1 bar
• 3/8 in. / 9.5 mm : 175 psig / 12.1 bar
• 1/2 in. / 13 mm : 175 psig / 12.1 bar
• 3/4 in. / 19 mm : 150 psig / 10.3 bar
• 7/8 in. / 22 mm : 125 psig / 8.6 bar
• 1 in. / 25 mm : 100 psig / 6.9 bar
• 1-3/16 in. / 30 mm : 80 psig / 5.5 bar
Maximum Outlet (Casing) Pressure
• 66 psig / 4.5 bar
Minimum Differential Pressure for Full Stroke
• 1.5 psid / 0.10 bar d
Outlet Pressure Ranges
• 3.5-inches w.c. to 60 psig / 9 mbar to 4.14 bar in nine ranges
Pressure Registration
• Internal, External, or Dual Registration
Temperature Capabilities
• -20 to 150°F / -29 to 66°C
Approximate Weight
• 21 lbs / 10 kg
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