Fulflo Specialties

What Fulflo Specialties does

Fulflo Specialties, Inc., headquartered in Blanchester, Ohio, manufactures guided piston hydraulic bypass relief valves for industrial, oil & gas, and military applications. The company's core technology is a patented modulating piston design that enables chatter-free operation under varying pressure conditions, marketed as differentiated against conventional spring-loaded poppet or ball check valves. Fulflo's product portfolio spans five core series (V, FV, OV, A, and SVB) covering sizes from 3/8" to 4" and pressures from 2 to 1000 psi, plus a custom Specialty Valves line and an online Valve Configurator tool for engineered specification.

The firm sells exclusively through authorized distribution: 50+ distributors in the US covering all major industrial states, full Canadian coverage with TSSA CRN registrations in 13 provinces and territories, and dedicated international partners (George Nikiforov Inc. for global markets except Canada and Thailand; MTR Thailand Co., Ltd. for Thailand). Pricing is quote-based; the company does not publish list prices, and sales are supported by technical whitepapers, product videos, and a digital product catalog. Customer use cases include pump and systems protection, compressor systems, lubrication skids, oil and gas refining, and military shipboard and aircraft-carrier hydraulic systems.

Fulflo holds UL 842, API 520, and API 614 approvals on its SVB brass valves for flammable fluid applications, alongside three TSSA Certificates of Achievement. The business is a subsidiary of Ruthman Companies, a privately held diversified industrial group. No external funding rounds are disclosed, and the operating headcount is reported in the 11-50 band.

Name

Fulflo Specialties

Legal name

Fulflo Specialties, Inc.

Website

https://fulflo.com

Company type

Private

Founded year

1912

Operating status

Operating

Headcount range

11–50 employees

Short description

Fulflo Specialties, Inc. is a US-based manufacturer of patented guided piston hydraulic bypass relief valves serving oil & gas refining, military, and industrial process customers through authorized distributors across North America and select international markets.

Ownership category

akta.pro rank

Product category

Hydraulic Relief Valves

NAICS

Fluid Power Valve and Hose Fitting Manufacturing (332912), Industrial Valve Manufacturing (332911)

SIC

Oil & Gas Field Machinery & Equipment (3533), Pumps & Pumping Equipment (3561)

akta.pro primary industry

Valves & Cartridge Valves (Directional, Pressure, Flow Control) (IMAHAGAE)

akta.pro secondary industry

Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH)

Keywords

• Hydraulic relief valves
• Guided piston valves
• Pressure relief valves
• Hydraulic bypass valves
• Industrial fluid power

Headquarters

HQ city

Blanchester

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Hydraulic Valve Sales: Fulflo generates revenue through the sale of hydraulic relief valves across multiple series (V, FV, OV, A, SVB). The company sells directly through their website configurator and via a network of authorized distributors. Products range from standard valves to custom-engineered specialty valves for specific applications.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Fulflo Specialties manufactures hydraulic bypass relief valves using a patented guided piston design with modulating flow characteristics. The portfolio spans five core series (V, FV, OV, A, SVB) plus custom specialty valves, covering sizes from 3/8" to 4" and pressures from 2 to 1000 psi for industrial process, oil and gas, and military applications. The company offers a Valve Configurator tool for product specification and quote requests.

Product overview

Fulflo Specialties manufactures a comprehensive portfolio of guided piston hydraulic relief valves organized into five core product series: V-Series (standard relief valves), FV-Series (anti-venting safety design), OV-Series (inlet-pressure-operated for variable backpressure), A-Series (pilot-operated for larger sizes and higher flows), and SVB-Series (UL/API approved for flammable fluids). The V, FV, and OV Series range from 3/8" to 2" with pressures up to 1000 psi; the A-Series covers larger sizes (2.5" to 4") with flows up to 600 gpm; the SVB-Series addresses flammable fluid applications with UL 842 approval. All series offer multiple connection options (threaded, flanged, handwheel) and materials (Brass, Cast Iron, Cast Steel, Stainless Steel). Beyond standard offerings, the company provides a web-based Valve Configurator tool and custom Specialty Valve engineering for challenging applications.

Differentiator

Problem solved

Functional benefit

Products and services

• V-Series Valves Guided piston relief valves ranging from 3/8" to 2" that operate efficiently with liquids of any viscosity at pressures from 3 to 1000 psi. Available in threaded and flanged connections with standard or handwheel design, in Brass, Cast Iron, Steel, and Stainless Steel materials. Used for hydraulic system pressure relief in industrial applications.
• FV-Series Valves Same size and flow range as V-Series but with a safety design that prevents liquid and gas venting during normal operation and adjustment. Features an o-ring around the adjusting screw to prevent liquid escape. Available in threaded and flanged connections. Used where fluid venting must be prevented during operation or adjustment.
• OV-Series Valves Relief valves designed for applications with variable back pressure where outlet pressure should not affect the valve's set pressure. Operates on inlet pressures only. Ranges from 1/2" to 2" at pressures from 10 to 500 psi. Used where downstream back pressure fluctuates.
• A-Series Valves Hydraulic bypass relief valves for load regulation and system protection, ranging from 2.5" to 4" with pressures up to 500 psi. Offered in both Direct Acting (up to 150 psi) and Internal Pilot operated models in threaded or flanged connections. Used for higher-flow, larger-diameter system protection.
• SVB-Series Valves Brass hydraulic bypass relief valves specially designed for flammable fluids, UL 842 Approved and API 520 & 614 Approved. Ranging from 3/8" to 2" at pressures from 3 to 500 psi. Used with fuel oils on oil burner services or applications requiring Underwriter Listed valves.
• Specialty Valves Custom pressure relief valves engineered to specific application requirements including specialty springs, mixed internal materials, uncommon sealing gaskets, high temperature gaskets, special threaded connections, and custom piston designs. Used where standard catalog valves do not meet application requirements.

Quantifiable outcome

• Chatter-free operation prevents equipment damage and reduces maintenance intervals
• +1 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Six partnerships are on record, tiered core.

• Anderson Industrial Machinery (PA/NJ/NY)coreChannel Partner/ Reseller/ DistributorAuthorized distributor for New Jersey, Pennsylvania, and New York regions. Located at 201 N 5th Avenue, Royersford, PA 19468. Contact: (888)246-4564.
• Anderson Process (WI/IL)coreChannel Partner/ Reseller/ DistributorAuthorized distributor for Wisconsin and Illinois. Wisconsin: 21365 Gateway Court, Brookfield, WI 53045. Illinois: 960 Oak Creek Drive, Lombard, IL 60148.
• D & F Distributors (IN/OH/KY/IL)coreChannel Partner/ Reseller/ DistributorAuthorized distributor covering Illinois, Indiana, Ohio, and Kentucky. Located at 800 Canal Street, Evansville, IN 47713.
• George Nikiforov, Inc.coreChannel Partner/ Reseller/ DistributorInternational distributor (excluding Canada and Thailand) located at 200 Park Avenue, Suite 514, New York, NY 10003-1503. Contact: (212)473-4555.
• MTR (Thailand) Co., Ltd.coreChannel Partner/ Reseller/ DistributorExclusive Thailand distributor at 28/8 Moo 2 Kanchanapisek Rd., Bangchaeknang, Talingchan, Bangkok 10170 Thailand.
• Ruthman Companies (Parent)coreStrategic or Co-development PartnerFulflo Specialties, Inc. is a division of Ruthman Companies. Great Lakes Pump & Supply Co. is also a Ruthman Company.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• HYDAC Technology: HYDAC manufactures hydraulic accumulators, valves, filters, and fluid conditioning components for mobile and industrial hydraulics, with deep oil & gas and process industry exposure. Directly comparable to Fulflo in hydraulic relief/control valves and similar customer verticals.
• Yuken Kogyo: Yuken manufactures hydraulic valves, pumps, and power units with a strong focus on pressure-control and modular valve technology for industrial applications. Directly comparable to Fulflo in hydraulic pressure relief and control valves for industrial hydraulic systems.
• Sun Hydraulics (Helios Technologies): Sun Hydraulics designs and manufactures hydraulic cartridge valves including relief and pressure-control functions, serving industrial and mobile hydraulic markets globally. Direct competitor to Fulflo in hydraulic relief/bypass valves with similar B2B industrial motion-control buyers.
• Atos (Atos Oleodinamica): Atos manufactures directional, pressure, and flow control valves for hydraulic systems, including safety and relief valves, serving industrial and mobile equipment OEMs. Direct competitor in industrial hydraulic pressure control valves with comparable product functionality to Fulflo's series lines.
• Moog Inc. Moog produces high-performance hydraulic valves, servovalves, and motion control components for industrial, aerospace, and defense applications. Overlaps with Fulflo on hydraulic relief and pressure control valves, particularly in military and industrial process segments.

Broad incumbents

• Parker Hannifin: Parker Hannifin is one of the largest fluid power and motion control companies globally, offering hydraulic valves, pumps, cylinders, and integrated systems to industrial and aerospace customers. Overlaps with Fulflo across hydraulic valve categories but addresses a vastly broader fluid power portfolio.
• Bosch Rexroth: Bosch Rexroth is a global leader in factory automation, mobile applications, and machinery applications, providing pumps, motors, cylinders, valves, and electronics. Competes with Fulflo in industrial hydraulic valves but at much broader scope and scale.
• Danfoss Power Solutions: Danfoss Power Solutions supplies hydraulic components including valves, pumps, motors, and electronic controls for mobile and industrial machinery. Overlaps with Fulflo in hydraulic relief and pressure-control valves as part of a much larger fluid power portfolio.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@ruthmanco/search?query=fulflo
• Facebookfacebook.com/RuthmanCompanies
• LinkedInlinkedin.com/showcase/fulflo-specialties-inc

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Fulflo Specialties