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Pumps & Cylinders
Pumps & Cylinders
Frequently Asked Questions
- How do I choose between a centrifugal and a positive-displacement pump?
- As a rule of thumb, centrifugal pumps suit high-flow, lower-viscosity duty with relatively stable head, while positive-displacement pumps (gear, screw, diaphragm) suit high-viscosity, high-pressure or metering duty where flow must stay proportional to speed. Share your flow, head, viscosity and fluid and a partner can recommend a pump family and standard.
- What is the typical minimum order for pumps or cylinders?
- Engineered pumps and cylinders are often quoted in small quantities, sometimes single units for large process pumps or specials, while catalogue cylinders may carry higher MOQs per bore and stroke. Quantities vary by manufacturer and configuration. Consolidating a spec package usually helps pricing. Treat any figure as indicative until quoted.
- Which test and material certifications are available?
- Where specified, partners can provide hydrostatic and performance test certificates, material certificates such as EN 10204 3.1, NDT reports (UT, MPI, DPI), NACE MR0175 compliance for sour service, and PED/CE documentation for EU imports, with SABER conformity for Saudi delivery. Certificate scope is confirmed per order rather than assumed across all partners.
- What materials, sealing and pressure rating should I specify?
- For pumps, specify wetted materials (cast iron, stainless, duplex), seal type (gland packing or mechanical seal) and duty point. For cylinders, specify bore, stroke, rod diameter, mounting style (ISO 6020/6022 or NFPA), working pressure, cushioning and rod surface (hard chrome). State the service so corrosion and temperature are covered. Share a datasheet or drawing to match.
- Can pumps and cylinders be built to an OEM drawing or duty point?
- Yes, a subset of partners build to OEM drawings, sample units or a specified duty point, including special materials and mountings. Some partners supply into equipment OEM programmes, but specific approvals should not be assumed as blanket facts; share your drawing, datasheet or spec at inquiry and a suitable partner can be matched to the work.
- What lead times and delivery terms apply to Europe and the GCC?
- Catalogue cylinders and small pumps are relatively quick, while engineered process pumps or special cylinders take considerably longer; treat any figure as indicative until quoted. Full CIF delivery to Rotterdam, Antwerp, Jebel Ali or Dammam can be arranged, with sea freight added to the manufacturing window.