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48 Years
experience
Emergency
services
Your Trusted Precision Engineering Partner in Hull
Parmac Engineering Services has been delivering precision engineering solutions in Hull since the late 1970s. Founded by John and Paul Sanderson and incorporated in 2002, we specialise in rotary valve manufacturing, production machinery rebuilds, and bespoke engineering projects. Our team of time-served engineers operates from a centrally located facility equipped with advanced machinery, including CNC mills, lathes, and welding plants. We serve diverse industries, including blue-chip companies, with rapid-response repair services and custom-designed machinery. Our commitment to quality is demonstrated through decades of repeat business and client testimonials highlighting our technical expertise and customer service.

We maintain a fully equipped workshop with 10-ton crane access and offer nationwide on-site repairs. Our staff's collective experience spans over 30 years, covering machining, fabrication, and safety-critical modifications. We pride ourselves on solving complex engineering challenges, including obsolete part replacements and productivity-enhancing machinery modifications. Our sister company, Robert Sanderson, supports large-scale engineering design and installation projects. With a focus on innovation and reliability, we continue to expand our capabilities while maintaining the personal service that has defined our business since inception.
Services
Precision Engineering Breakdown Repairs On-Site Services Rotary Valve Manufacturing Machinery Modification Production Rebuilds Welding & Fabrication Special Purpose Machinery
Details
  • Year established: 1978
Highlights and features
  • We offer 30+ years of precision engineering expertise
  • Our facility includes 10-ton crane and full forklift access
  • Time-served engineers skilled in all steel fabrication
  • Bespoke machinery design for unique production requirements
  • Proven track record with blue-chip industrial clients
What people say
Rapid response times Bespoke machine design Excellent service Skilled technicians Reliable breakdown support
Services
Precision Engineering
Our precision engineering services utilise digital technology and advanced machinery to deliver components with exact specifications. We cater to diverse industrial needs through CNC milling, lathe operations, and surface grinding. Our workshop's capabilities ensure tight tolerances for critical manufacturing applications.
Rotary Valve Manufacturing
We manufacture rotary valves in mild steel with chrome finishes or fully stainless steel configurations. Our valves feature maintenance-friendly designs with axial rotor systems preventing migration. Available as fixed or mobile units with hydraulic or electrical drive options.
On-Site Repairs
Our comprehensive on-site repair service addresses machinery breakdowns at client locations. We provide rapid-response maintenance for production equipment, supported by mobile technicians and stocked engineering materials for immediate fixes.
Machinery Modification
We implement safety improvements and efficiency enhancements to existing production machinery. Our modifications include process optimisation and productivity-boosting redesigns for factory floor equipment and production lines.
Special Purpose Machinery
We design and build bespoke machinery tailored to specific production requirements. Our engineering team creates solutions for unique manufacturing challenges, including the high-throughput Parmac Rotary Valve system for bulk material handling.
People
John Sanderson
Owner
Founder with over 40 years in engineering, leading Parmac since its establishment in the 1970s. Provides strategic direction while maintaining hands-on involvement in complex projects.
Bryan Batty
Manager
Experienced engineering manager overseeing daily operations. Ensures technical excellence across all projects while maintaining client relationships and quality standards.
Joy Sanderson
Manager
Key operational manager with deep understanding of engineering processes. Focuses on client satisfaction and efficient project delivery across the company's service portfolio.
Questions
What engineering services do you specialise in?
We specialise in precision engineering, rotary valve manufacturing, machinery repairs, and bespoke equipment design. Our capabilities include CNC machining, welding/fabrication, and production line modifications.
Do you handle emergency machinery repairs?
Yes, we offer rapid-response breakdown services with on-site technicians available for urgent machinery repairs across industrial sectors.
Can you manufacture custom machinery?
We design and build special purpose machinery tailored to specific production requirements, including the Parmac Rotary Valve system for bulk material handling.
What industries do you serve?
We work with diverse sectors including manufacturing, bulk haulage, and energy. Our client base includes blue-chip companies requiring precision engineering solutions.
What equipment is available in your workshop?
Our workshop features CNC mills/lathes, surface grinders, welding plants, and heavy lifting equipment including a 10-ton crane for comprehensive engineering capabilities.
Reviews (1)
Neil Adamson
Aug 30, 2021 Report
Good engineering company I would recommend, should have my wheelchair forks strengthened soon thanks to Tony.