
Develops and manufactures safety valves, control valves, test and isolation plugs, and tube service solutions for critical applications.

Curtiss-Wright Valves Division
Brecksville, OH (USA) · Hatfield, PA (USA) · Edmonton, AB (Canada) · Brantford, ON (Canada) · Alphen aan den Rijn (Netherlands) · Corby (United Kingdom) · Sao Carlos (Brazil) · Tianjin (China) ·New on Amplifa
About Curtiss-Wright Valves Division
The Curtiss-Wright Valves Division is a business unit of the Curtiss-Wright Corporation and offers valve technologies for power generation, oil and gas, chemical/petrochemical, defense, and other industries. The portfolio includes spring-loaded and pilot-operated pressure relief valves (PRVs) from Farris Engineering, control valve systems from Dyna-Flo, as well as high-precision tube plugs, test and isolation products, and Field Services from EST Group. For more than 60 years, the Division has supplied critical valves to the US Navy, including actuator packages for naval ships. For the process industries, proprietary engineering software (Total Pressure Relief Management Solution, FloSpec) is offered for sizing, selection, and compliance of safety and control valves. EST Group additionally provides on-site services such as tube inspection, cleaning, plugging, and renewal for heat exchangers and condensers. The Division maintains locations in the USA, Canada, Brazil, the Netherlands, the United Kingdom, China, India, and Singapore.
- Site
- Brecksville, OH, USA
- Processes
- Design and manufacture of spring-loaded and pilot-operated pressure relief valves (PRVs), Manufacture of isolation & control valves (bellows sealed valves, high-performance shut-off dampers), Manufacture of process solenoid valves, gate, globe, and check valves with various actuation types, Development and manufacture of actuator products for naval ships (US Navy), Total Pressure Relief Management Solution (engineering software for PRV sizing, selection,, Pop-A-Plug Tube Plugging (Near End and Through-The-Tube) for heat exchangers, condensers, oil, Tube Sleeving & Lining, Tube Pulls/Samples
- Materials
- Safety Valves (Farris), Isolation and Shut-off Valves, Pop-A-Plug® Tube Plugs, GripTight® Test and Isolation Plugs, Dyna-Flo Control Valves, Actuator Packages (Marine)
- Certificates
- ISO 9001:2015, TA Luft:2021 (Pop-A-Plug Tube Plugs P2 & CPI/Perma), TA Luft:2021 (product)
- Founded
- 1929
- 01
Engineering & Design
- 02
Manufacturing of Valves and Plugs
- 03
Testing & Certification
- 04
Assembly & Delivery
- 05
Field Services & Training
Products and Processes
Safety Valves (Farris)
Spring-loaded and pilot-operated pressure relief valves for overpressure protection in marine, power, and chemical plants.
Isolation and Shut-off Valves
Bellows-sealed, shut-off, plug, and check valves for applications where external leakage is not permissible.
Pop-A-Plug® Tube Plugs
Mechanical tube plugs for leaking heat exchanger tubes up to 7,000 psi (480 bar) without welding or explosives.
GripTight® Test and Isolation Plugs
Hydrostatic testing of tubes, piping, and pressure vessels at working pressures up to 15,000 psiG (1,034 barG).
Dyna-Flo Control Valves
Eccentric Rotary Plug Valve and AxFlo anti-cavitation systems with actuators and positioners.
Actuator Packages (Marine)
Development and manufacture of actuator packages for naval ships to current standards.
Locations

Brecksville, OH
USHeadquarters / Farris Engineering
- Design & manufacture of safety valves

Hatfield, PA
USEST Group Headquarters
- Tube plug & test products
- Field Services

Edmonton, AB
CADyna-Flo Manufacturing Facility
- Control valve manufacturing
- Assembly
Brantford, ON
CAFarris Engineering
Alphen aan den Rijn
NLEST Group B.V. (EMEA)
Corby, Northants
GBSolent & Pratt / EMEA Regional Office
Sao Carlos, SP
BRFarris Engineering / Latin America Regional Office
Tianjin
CNFarris Engineering
Noida, U.P.
INFarris Engineering / India & Asia Regional Office
Components



Inside the production



Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Design and manufacture of spring-loaded and pilot-operated pressure relief valves (PRVs)Engineering | – | – | – | – | – |
| Manufacture of isolation & control valves (bellows sealed valves, high-performance shut-off dampers)Engineering | – | – | – | – | corrosion-resistant materials |
| Manufacture of process solenoid valves, gate, globe, and check valves with various actuation typesEngineering | – | – | – | – | – |
| Development and manufacture of actuator products for naval ships (US Navy)Engineering | – | – | – | – | – |
| Total Pressure Relief Management Solution (engineering software for PRV sizing, selection,Engineering | – | – | – | – | – |
| Pop-A-Plug Tube Plugging (Near End and Through-The-Tube) for heat exchangers, condensers, oilAssembly | – | – | – | – | – |
| Tube Sleeving & LiningAssembly | – | – | – | – | – |
| Tube Pulls/SamplesAssembly | – | – | – | – | – |
| Tube CleaningSurface | – | – | – | – | – |
| Tube, Pipe & Pressure Vessel Testing & Inspection / Visual Tube InspectionTesting | – | – | – | – | – |
| Hydrostatic pressure testing of tubes, piping, flange connections, and pressure vesselsTesting | – | – | – | – | – |
| GripTight Isolation / Double Block & Bleed Isolation (up to 2250 PSIG / 155 BARG between seals,Testing | – | – | – | – | – |
| Testing and assessment of welded joints (VT, MT/PT, RT, UT, hydrotest, leak testing perTesting | – | – | – | – | – |
| Product training (Pop-A-Plug, GripTight test/isolation plugs, Smart Ram, G-Series Tube LeakEngineering | – | – | – | – | – |
| Design and manufacture of control valve systems (DF400 Eccentric Rotary Plug Valve, 320 AxFloEngineering | – | – | – | – | – |
Additional services
Quality
EST Group is certified to ISO 9001:2015 (TÜV SÜD, no. 951 03 1540, valid until 2027-12-09). Products such as Pop-A-Plug® and GripTight® are backed by TÜV Rheinland test reports and TA-Luft certificates (no. 968/TA 1676.00/26, valid until 2031-03-25).
| Evidence | Hatfield, PA |
|---|---|
| ISO 9001:2015 | |
| TA Luft:2021 (product) |
History
- 1929
Curtiss-Wright Valves Division: 'For nearly a century' of problem solving (approx. 1929, derived from 'nearly a century')
- 1968
EST Group founded
Valve group has supplied critical valves to the US Navy for over 60 years
Dyna-Flo: over 30 years of experience in the control valve sector
- 2024-12-10
ISO 9001:2015 certificate EST Group valid from (TÜV SÜD)