Parmac

What Parmac does

Parmac Engineering Services Ltd is a Hull, United Kingdom-based precision engineering company founded in the late 1970s, originally as a machine tool dealership by John Sanderson. It has evolved into a full-service engineering workshop operating from a single Cannon Street site equipped with CNC and manual machining centres, 10-ton overhead crane access, and welding and fabrication capabilities (Sub-Arc, MAG, MIG, TIG, MMA). The company is family-owned and currently managed by Directors Joy Sanderson-Penzer and Lee Penzer, alongside General Manager Bryan Batty.

The company's flagship product is the Parmac Rotary Valve, an own-design mobile discharge valve positioned as the lightest on the market with the highest flow rate (950 litres per minute at 50 RPM). It is offered in stainless steel food-grade and mild steel variants, as both fixed and mobile (wheeled chassis) units, with a full accessory line (Tundish, Topbox, Lids, Seals, Flow Control Valves). Beyond rotary valves, Parmac delivers precision machining, breakdown repairs, on-site repair services, welding and fabrication, machinery modifications, production machinery rebuilds, bespoke special purpose machinery, and in-house spares manufacturing.

Parmac's business model is project-based professional services plus hardware sales of proprietary rotary valves and accessories, with all pricing provided on request. Go-to-market is direct: customers contact the company by phone, email, or website enquiry form, with sales representatives available by appointment. The customer base is concentrated in industrial manufacturing and bulk haulage, including blue-chip enterprises and an unnamed largest UK bulk haulier that receives several new valves per year. Distribution is entirely direct from the Hull workshop, with on-site technicians available for repairs; no resellers, marketplaces, or digital channels beyond a basic LinkedIn and Facebook presence are used.

Name

Parmac

Legal name

Parmac Engineering Services Ltd

Website

https://parmaceng.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

11–50 employees

Short description

Parmac Engineering Services Ltd is a family-owned Hull, UK precision engineering firm founded in the late 1970s. It manufactures its own-design Parmac Rotary Valves and delivers bespoke machining, welding, repair, and special purpose machinery to industrial and bulk haulage customers.

Ownership category

akta.pro rank

Product category

Precision Engineering Services

NAICS

Machinery Manufacturing (333)

SIC

Special Industry Machinery, Nec (3559), General Industrial Machinery & Equipment, Nec (3569)

akta.pro primary industry

Industrial Controllers & Control Systems (PLCs, PACs, CNC Controllers) (IMAHAHAH)

Keywords

• Precision engineering
• Rotary valve manufacturing
• CNC machining services
• Bespoke machinery design
• Welding and fabrication

Headquarters

HQ city

Kingston upon Hull

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Precision Engineering Services: CNC and manual machining, welding, fabrication, repairs, and special purpose machinery manufacturing. One-time project-based work with pricing on request.
2. Rotary Valve Manufacturing: New rotary valve manufacturing to own design. Available in stainless steel (food grade) and mild steel variants. Fixed and mobile units. Manufactured to exact customer requirements.
3. Rotary Valve Repair Services: Comprehensive breakdown and reconditioning service with on-site technicians available. Vehicle access for trailers to be repaired under cover.
4. Spares and Components: Manufacture of shafts, bushes, fittings and accessories (Tundish, Topbox, Lids, Seals, Flow Control Valves) in range of engineering metals and plastics.
5. On-site Repair Service: On-site repair and improvement works carried out at customer locations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Parmac is a family-owned precision engineering company that manufactures its own-design rotary valves (fixed and mobile configurations) and delivers CNC/manual machining, welding, fabrication, on-site repair, machinery rebuild, and bespoke special-purpose machinery. Operations are run from a fully equipped Hull workshop with a 10-ton crane, serving UK and international industrial clients including blue-chip manufacturers and bulk hauliers.

Product overview

Parmac is a precision engineering company offering a comprehensive suite of manufacturing and repair services from its Hull-based workshop. The core portfolio centers on Parmac's proprietary Rotary Valve product line — available as fixed or mobile (wheeled chassis) units — complemented by precision machining, welding/fabrication, on-site repairs, and bespoke special purpose machinery design. The rotary valve family includes the standard model and mobile variant, with accessories (Tundish, Topbox, Seals, Flow Control Valves) sold as add-ons. Supporting services include breakdown repairs, spares manufacturing, and production machinery rebuilds. All offerings are delivered by time-served engineers using CNC and manual machining equipment.

Differentiator

Problem solved

Functional benefit

Products and services

• Parmac Rotary Valve Industry-leading mobile discharge rotary valve in Parmac's own design. Lightest on the market with best flow rate at 950 litres per minute at 50 RPM. Available in mild steel with hard chrome ground surfaces or fully stainless steel food-grade construction. Sold to industrial and bulk haulage customers.
• Parmac Mobile Rotary Valve Mobile rotary valve mounted on a wheeled chassis for on-site flexibility. Electrically driven with same market-leading flow rate and reliability as fixed units. Available in stainless steel or mild steel construction. For industrial sites requiring portable discharge capability.
• Rotary Valve Accessories Manufactured accessories for Parmac rotary valves including Tundish (stainless steel for controlled product flow), Topbox (stainless steel for valve mounting), Lids, Seals, and Flow Control Valves. Bespoke manufacture to customer requirements.
• Precision Engineering Services Fully equipped CNC and manual machine shop delivering precision machining to exact specifications and tolerances. For industrial clients across Hull, Yorkshire, UK nationwide, and internationally.
• Breakdown Repair Service Rapid response repair service for small to medium sized engineering breakdowns. Range of engineering metals and plastics kept on site for fast turnaround. Minimises customer downtime.
• On-Site Repair Service Mobile engineering technicians visit client sites to carry out repairs and improvement works to suit specific requirements. Includes on-site rotary valve technician support.
• Welding and Fabrication Welding and fabrication in all engineering metals, delivered at the Hull workshop and on client sites. Includes Plasma TIG with Seam Welder, Sub-Arc, MAG, MIG, TIG, and MMA processes, plus rotators and manipulators.
• Machinery Modification Modifications to existing machinery including safety upgrades, applicable to any industrial equipment requirement.
• Production Machinery Rebuild Repair, redesign, and modification of production machinery to improve efficiency, productivity, and safety. Wide knowledge in repairs and modifications to factory floor process equipment.
• Special Purpose Machinery Design and Manufacture Design and manufacture of bespoke machines built to specific industry requirements. Covers confidential client projects across multiple industries, e.g. shotgun cartridge wad cutting machine producing 28,800 pieces per 8-hour shift.
• Rotary Valve Repairs Comprehensive breakdown and reconditioning service for rotary valves. On-site technicians available. Good vehicle access allows trailers to come on site to be repaired under cover.
• Spares and Components Manufacture In-house manufacture of engineering spares including shafts, bushes, and fittings in a range of engineering metals and plastics. Speedy or specific turnaround for customer requirements.

Quantifiable outcome

• 950 litres per minute flow rate at 50 RPM
• +3 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Kingston CraftsmenminorStrategic or Co-development PartnerSister company collaboration on Hull History Centre project. Parmac was involved with re-engineering of steel work supporting wooden columns, with the wooden columns manufactured by Kingston Craftsmen.

Scale indicators6 records

Recent moves5 records

Expansion highlights4 records

Others

• Kingston Craftsmen: Local Hull partner with whom Parmac has collaborated on structural engineering for the Hull History Centre. Relevant as a regional adjacency / partnership counterparty rather than a competitive peer, illustrating Parmac's local collaborative ecosystem.

Direct peers

• Gericke Group: Swiss-headquartered Gericke designs and manufactures rotary valves, feeders, and pneumatic conveying systems for bulk solids handling. It overlaps Parmac on the rotary-valve product family and on the broader one-stop-shop bulk-handling engineering offering.
• DMN Group: DMN is a leading European manufacturer of rotary valves, diverter valves, and related bulk-solid handling components. It is the most direct head-to-head competitor to Parmac's core rotary valve product line, competing on similar flow-rate and hygiene specifications across food, chemical, and bulk-haulage end markets.
• Flexicon Corporation: Flexicon manufactures rotary valves, bulk bag dischargers, and conveying equipment for bulk solids. It competes with Parmac on the rotary valve line and shares the same food-grade and bulk-handling use cases across international markets.
• AZO Group: AZO is a German specialist in automated bulk material handling systems for the food, plastics, chemical, and pharmaceutical industries, including rotary valve and feeder products. It is comparable on both the rotary valve component and the broader engineered-system offering.
• Spiroflow: Spiroflow is a UK-based manufacturer of bulk material handling equipment, including rotary valves, flexible screw conveyors, and bulk bag dischargers. It is a domestic UK competitor addressing overlapping food-grade and bulk-haulage end customers.

Broad incumbents

• Coperion: Coperion is a large global supplier of compounding, extrusion, and bulk material handling systems including rotary valves and feeders. It addresses the same food-grade and bulk-handling customers as Parmac but as a much broader portfolio incumbent rather than a niche specialist.
• Schenck Process: Schenck Process supplies industrial weighing, feeding, and bulk material handling equipment globally. It overlaps with Parmac on rotary valve-adjacent feeding and conveying applications, particularly in heavy industrial and food-grade segments, but offers a much wider product portfolio.

Emerging players

• Norwich Precision Engineering: UK-based precision engineering subcontractor offering CNC milling, turning, and fabrication services comparable to Parmac's machining arm. Comparable as a peer on the general precision engineering / sub-contract machining side of Parmac's business, though without the proprietary rotary valve product.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/profile.php?id=100064182273876
• LinkedInlinkedin.com/company/parmac-engineering-services-limited

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Parmac