Brand: Fisher

Fisher HPT Control Valve

Name: Fisher HPT High-Pressure Control Valve – Datasheet & Quote
Brand: Fisher

Description

Overview

The Fisher HPT control valve is a single-port, high-pressure globe or angle-body control valve engineered for the most demanding severe-service applications in power generation, hydrocarbon production, chemical processing, and refining. Built on Fisher’s HP series platform with metal seats, cage guides, and push-down-to-close plug action, the HPT is purpose-built for full pressure-drop capability where standard-class control valves cannot reliably hold up under sustained high-pressure throttling.

Working closely with plant engineers in the region, Seven Star LLC supplies the Fisher HPT control valve to power plants, gas processing facilities, and refineries across Oman and the wider GCC, with application engineering support and lead time confirmed at quotation for critical high-pressure severe-service valves.

Operating Principle

The Fisher HPT uses a cage-guided plug with push-down-to-close action, meaning the valve plug travels downward against the flow of process fluid to restrict or stop flow, an arrangement well suited to holding tight shutoff under full differential pressure. The rigid cage structure maintains plug alignment throughout the stroke, reducing the vibration and mechanical noise that high-pressure-drop service would otherwise induce, while metal seat construction is engineered to withstand full pressure-drop conditions without the wear that a soft-seated design would suffer at these energy levels.

Where flow-induced noise or cavitation is a concern at high pressure drops, the HPT accepts interchangeable Cavitrol III, Whisper Trim III, or WhisperFlo trim technologies that break the pressure drop into stages across multiple flow paths, attenuating noise and controlling cavitation damage that a single-stage trim could not manage safely. Optional balanced trim reduces the actuator thrust needed to stroke the valve smoothly even at the highest pressure drops the HP series is rated for.

Engineering Design of the Fisher HPT

Mechanically, the Fisher HPT is available in NPS 2 through 14 in globe or angle body configurations, with standard Class 900 and Class 1500 pressure ratings and an intermediate ANSI Class 3200 rating available on globe bodies from NPS 8 through 12 with weld-end fittings for the most extreme service. End connections include ISA 75.08.05 and ISA 75.08.06 long-pattern dimensions for NPS 4 and 6 sizes, giving engineers flexibility to match existing piping standards on retrofit and new-build projects alike.

Sealing at flanged joints relies on premium spiral-wound gaskets in alloy 600/graphite or alloy X750/graphite combinations, selected for reliability across the temperature and pressure extremes the HP series is rated for. Quick-change trim construction, using only standard tools, lets maintenance crews service the hardened cage, plug, and seat components without specialized equipment, while Micro-Flute and Micro-Form plug options extend the valve’s usable rangeability down to low-flow, high-turndown conditions with tight shutoff.

Key Features

The Fisher HPT control valve is engineered specifically for full pressure-drop capability in the most demanding high-pressure services.

Cage-guided, push-down-to-close plug design provides stable, low-noise operation under sustained high differential pressure.
Metal seat construction is rated for full pressure-drop conditions without the wear risk of soft-seated trim designs.
Interchangeable Cavitrol III, Whisper Trim III, and WhisperFlo trims control noise and cavitation at severe pressure drops.
Standard Class 900 and Class 1500 pressure ratings, with intermediate Class 3200 available on select globe sizes.
Premium spiral-wound gaskets in alloy 600/graphite or alloy X750/graphite maintain reliable sealing at temperature and pressure extremes.
Quick-change trim components require only standard tools, reducing maintenance downtime during scheduled outages.
Micro-Flute and Micro-Form plug options extend usable rangeability for low-flow, high-turndown applications.
Optional balanced trim reduces actuator thrust requirements even at the highest rated pressure drops.

Industrial Applications

The Fisher HPT is specified on the highest-pressure services in power generation plants, including boiler feedwater, steam bypass, and turbine bypass systems, as well as high-pressure gas production, gas lift, and wellhead choke applications in upstream oil and gas facilities. Refineries and chemical plants also rely on the HPT for high-pressure letdown stations where standard-class control valves cannot sustain the required pressure drop without excessive wear or noise.

With fast quotation turnaround and technical support, Seven Star LLC supplies the HPT control valve throughout Oman and the broader GCC, supporting power generation and gas processing projects in the Sohar and Salalah economic zones as well as upstream and downstream oil and gas facilities around Muscat, where technical support with selection helps reduce the downtime risk on critical high-pressure isolation and throttling valves. GCC-wide power and process operators specify the HPT on new-build high-pressure systems and on retrofit programs replacing valves that have reached the end of their service life under severe pressure-drop duty.

Technical Specifications

The table below summarizes the principal Fisher HPT specifications and control valve design data as published by the manufacturer.

Parameter	Specification
Model	Fisher HPT
Body Style	Globe or angle body, single port
Size Range	NPS 2 through 14
Pressure Class	Class 900 and Class 1500 standard; intermediate Class 3200 on select globe sizes
Plug Action	Cage-guided, push-down-to-close
Trim Options	Cavitrol III, Whisper Trim III, WhisperFlo; Micro-Flute and Micro-Form for low flow
Gasket Material	Spiral-wound, alloy 600/graphite or alloy X750/graphite
End Connections	ISA 75.08.05 and 75.08.06 long-pattern for NPS 4 and 6
Typical Service	High-pressure power generation, hydrocarbon production, and refining

Request a Quote for Fisher HPT Control Valve

Power plant and process engineers across Oman and the GCC can request a formal quotation for the Fisher HPT control valve directly from Seven Star LLC, including current lead times, full technical datasheets, and trim selection guidance for noise and cavitation control at severe pressure drops. With engineering support in Muscat, Seven Star LLC’s instrumentation and valve automation division is available to support valve sizing, high-pressure trim selection, and FIELDVUE digital valve controller integration, so contact our team today to specify a control valve engineered for your most demanding high-pressure service.

Also available: Fisher V200 Vee-Ball Segmented Ball Control Valve · Fisher CV500 Eccentric Plug Control Valve

Datasheets & Documents

Datasheet Fisher HP Series Control Valves Product Bulletin Download

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About brand

Fisher is the control valve brand of Emerson. Its history starts in 1880 in Marshalltown, Iowa, where William Fisher, working at the town waterworks, invented a constant-pressure pump governor and founded a company to make it. Emerson bought Fisher Controls in 1992, and Marshalltown remains a main engineering and manufacturing site for Fisher valves. The brand covers control valves, actuators, FIELDVUE digital valve controllers, regulators and level controllers.

Seven Star LLC is an independent supplier listing Fisher control valves, actuators, positioners, regulators and spare parts for buyers in Oman and the GCC. Replacement valves and trim are matched from the serial number on the valve nameplate.

Fisher company profile

Origin	William Fisher's constant-pressure pump governor, Marshalltown, Iowa, USA (1880)
Ownership	Owned by Monsanto from 1969; sold to Emerson in 1992 and combined with Rosemount as Fisher-Rosemount, later Emerson Process Management. Today a brand of Emerson.
Main site	Marshalltown, Iowa, USA
Product families	Sliding-stem and rotary control valves, spring-diaphragm and piston actuators, FIELDVUE digital valve controllers, pressure regulators, displacer and digital level controllers
Typical duty	Throttling control of liquids, gas and steam, high-pressure and severe service, instrument supply and gas pressure reduction

Milestones

1880: William Fisher builds a constant-pressure pump governor in Marshalltown, Iowa.
1969: Monsanto acquires Fisher Controls.
1992: Emerson buys Fisher and combines it with Rosemount as Fisher-Rosemount, later Emerson Process Management.

Fisher valves, actuators and instruments

Series	Type	Typical use
easy-e ES, ET, EZ	Sliding-stem globe and angle valves	Cage-guided globe valves: ES with unbalanced plug, ET with balanced trim for higher pressure drop; EZ unbalanced with a seat ring retainer for viscous or dirty fluids
GX	Compact globe valve with integral actuator	Standard chemical and process duty where a compact valve package is preferred
HPT, HPAT	High-pressure globe and angle valves	Pressure classes up to ASME CL2500, compressor recycle and high-pressure letdown
V150, V200, V300, V250	Vee-Ball segmented ball and full-bore ball control valves	High-capacity control of liquids, gas and fibrous or slurry service
CV500	Eccentric rotating plug valve	Erosive, coking and dirty service
8560, 8580	High-performance butterfly valves	Large-line throttling and on-off control
657, 667, 1052, 1061, easy-Drive	Spring-diaphragm, piston and electric actuators	657 and 667 for sliding-stem valves; 1052 and 1061 for rotary valves; easy-Drive where no air is available
FIELDVUE DVC6200, DVC2000, 3610J	Digital valve controllers and positioners	HART positioning with valve diagnostics; 3610J pneumatic positioner for rotary actuators
627, 1098-EGR, 67C	Pressure regulators	Gas pressure reduction, pilot-operated regulation and instrument air supply
DLC3100, 2500	Digital and pneumatic level controllers	Displacer level and interface on separators and scrubbers

Where Fisher valves are used

Fisher control valves and regulators are standard equipment in oil and gas production, refineries, gas processing and LNG, petrochemicals, power plants and water systems. Typical loops are separator level and pressure, compressor anti-surge and recycle, fuel gas pressure reduction, feedwater and steam control, and chemical dosing. FIELDVUE controllers add diagnostics that help plan valve maintenance before a turnaround.

Ordering Fisher valves and spare parts: what we need

For spares, send the serial number from the valve nameplate together with the valve type, size, pressure class, trim and actuator type and size. Emerson keeps the build record behind the serial number, so plug, seat ring, cage, packing and diaphragm kits can be matched without guesswork. For a FIELDVUE or regulator, send the full model and type number and the mounting details. For a new valve add the process data: fluid, flow range, inlet and outlet pressure, temperature, leakage class, fail position, air supply and signal.

Facts checked against Emerson Fisher product information and published company histories, October 2026.

Browse Fisher products by category: Control Valves, Valve Actuator, Valve Positioner, Regulators, Level Transmitter.

FAQ

Questions about the Fisher HPT Control Valve

Answers from our engineering team on installation, compatibility and integration.

01What pressure ratings are available on the Fisher HPT?

The HPT is available in standard Class 900 and Class 1500 pressure ratings, with an intermediate ANSI Class 3200 rating available on globe bodies from NPS 8 through 12 with weld-end fittings.

02How does the HPT control noise and cavitation at high pressure drops?

It accepts interchangeable Cavitrol III, Whisper Trim III, or WhisperFlo trim technologies that break the pressure drop into stages across multiple flow paths, attenuating noise and controlling cavitation damage.

03What sizes is the Fisher HPT available in?

The HPT is available in NPS 2 through 14 in globe or angle body configurations, with end connection options including ISA 75.08.05 and 75.08.06 long-pattern dimensions for NPS 4 and 6.

04Does the HPT support low-flow, high-turndown applications?

Yes, Micro-Flute and Micro-Form plug options extend the valve usable rangeability down to low-flow conditions while maintaining tight shutoff performance.

05Is Seven Star LLC an experienced supply partner for Fisher products?

Yes, Seven Star LLC is an experienced supplier of Fisher control valves in Oman and the GCC, supplying Emerson-manufactured equipment with local technical support.