Paul Industries supplies and installs the sanitary components that make up a regulated process system: pumps, valves, fittings, tubing, gaskets, hoses, cartridge and rotary filters, UV and ozone sterilizers, and the instrumentation that measures flow, level, pressure and temperature. We are a contractor rather than a distributor, which matters because on a validated system component selection is a qualification decision, not a purchasing decision. The wrong gasket elastomer or an undocumented substitution can cost more than the part it saved.
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On a validated system, a component is a documented decision
In an unregulated plant a pump is a pump. On a qualified system the pump is part of an argument you made to a regulator: this equipment, in this configuration, produces this outcome repeatably. Swap a component for something functionally similar and the argument has a hole in it, even if the system runs perfectly.
The failure is rarely dramatic. It is a gasket in EPDM where the original was PTFE because the store had one in stock. A valve from a different manufacturer because the original had a fourteen-week lead time. A pump with a marginally different impeller. Each substitution is individually defensible and none of them gets written down as a change. Two years later the cleaning validation no longer reflects the installed system and nobody can point to when that happened.
This is why we treat component supply as part of the installation scope rather than as procurement. The part has to be right, it has to be documented with its material test report, and if it is not the original specification then somebody has to decide, on the record, whether that is a change.
What we supply and install
| Component | Selection driver | Most common failure in the field |
|---|---|---|
| Sanitary pumps | Duty, shear sensitivity, drainability, seal type | Seal failure on a product that was more abrasive than the datasheet assumed. |
| Valves and fittings | Zero-static or point-of-use design, actuation, orientation | Installed in an orientation that traps liquid and defeats drainability. |
| Tubing | Alloy, wall, surface finish, traceability | Mixed heat numbers with no material test report to reconcile them. |
| Gaskets and seals | Elastomer compatibility with product, cleaning chemistry and steam | Substituted material that survives the product but degrades under SIP. |
| Sanitary hoses | Temperature, pressure, cleanability, whether it can be CIP’d in place | Treated as a fixed connection when it needs a defined replacement interval. |
| Cartridge and rotary filters | Rating, integrity testability, changeout interval | Housings plumbed so the filter cannot be drained or integrity-tested easily. |
| UV and ozone sterilizers | Dose, flow rate, ozone destruct, lamp life | Lamp past its effective life while still lit, so nothing alarms. |
| Instrumentation | Sanitary connection, calibration access, response time | Located where calibration requires breaking into the sterile boundary. |
Instrumentation is where accessibility gets forgotten
Flow meters, level controls, pressure and temperature gauges, conductivity and TOC analyzers all have to be calibrated on a schedule for the life of the plant. That is a routine, repeated, unglamorous activity, and it is almost never considered when the instrument location is chosen. An instrument placed for the convenience of the pipe route can turn a fifteen-minute calibration into a shutdown, because reaching it means breaking a sterile boundary or draining a loop.
The same applies to sample points and to anything that will be replaced on a cycle: UV lamps, filter elements, seals. The question worth asking during design is not only whether it fits, but what it will take to service it on a live plant in five years.
Why buy components through the contractor installing them
Because the alternative splits responsibility at exactly the point where things go wrong. When the owner procures components and a contractor installs them, a leaking joint becomes an argument about whether the fitting was wrong or the weld was. When one party holds both, it becomes a repair. We are also able to tell you when a specified component is a poor fit for the duty before it is bought, which is worth considerably more than a discount on the purchase.
Frequently asked questions
Can we buy components from you without installation?
Yes, we supply components as well as install them, including on systems built by others. What we will always do is ask what the part is for, because the most useful thing we contribute at that stage is telling you when a specified component is wrong for the duty. A pump that is right on paper and wrong for a shear-sensitive product will be bought, installed, and then replaced at your cost.
What gasket material should we use?
It depends on three exposures, not one: the product, the cleaning chemistry and the sterilization condition. EPDM handles steam and caustic well but is poor with oils and many solvents. PTFE is chemically inert but less forgiving as a sealing material and can cold-flow. Silicone is flexible over a wide temperature range but has limited chemical resistance. The failure mode we see most is a material chosen for the product alone that then degrades under SIP.
Why do material test reports matter for tubing and fittings?
Because they are how you prove the alloy in your system is what the specification called for. An MTR ties a heat number to a chemical composition and mechanical properties. Without it you have a component that looks right and no evidence, which is a problem when an auditor asks or when a corrosion issue appears and you need to know whether the material was the cause. We treat traceability as a deliverable rather than paperwork.
Does substituting a component invalidate our qualification?
It can, and the risk is cumulative rather than single-event. A genuine like-for-like replacement, documented, is normally fine. A functionally similar part from a different manufacturer is a change that somebody has to assess, and the honest answer is that most plants do not assess it because the substitution happens at store level under time pressure. The protection is a defined rule about who decides when a repair has become a change.
How do you select a sanitary pump?
By duty and by product behavior rather than by flow rate alone. Centrifugal pumps suit low-viscosity duties and are easy to clean. Positive displacement suits viscous or shear-sensitive products where a centrifugal would damage the product or fail to move it. Beyond that, the questions that actually determine success are whether the pump drains, whether the seal suits the product and the cleaning chemistry, and whether it can be CIP’d in place or has to come apart.
What is the difference between a zero-static and a standard point-of-use valve?
A zero-static or zero-dead-leg valve is designed so the valve seat sits essentially flush with the wall of the main run, leaving almost no pocket where liquid can sit when the branch is closed. A standard tee-and-valve arrangement leaves a stub. On a high-purity water loop that stub is where biofilm establishes, which is why point-of-use valve design is one of the highest-leverage details on the whole system.
How often should sanitary hoses be replaced?
On a defined interval rather than on failure, and the interval should be written down. Hoses flex, abrade internally, and degrade with steam and cleaning chemistry in ways that are not visible from outside. They are also frequently the only component in an otherwise hard-piped system that nobody has assigned a life to. If a hose is in product contact it needs the same traceability and replacement discipline as any other wetted part.
Do UV sterilizers need monitoring beyond a lamp-on indicator?
Yes. A UV lamp continues to emit visible light long after its germicidal output has fallen below an effective dose, so an indicator that shows the lamp is lit tells you almost nothing about whether it is working. Effective installations monitor intensity rather than power, track lamp hours against rated life, and keep the quartz sleeve clean, because fouling on the sleeve reduces delivered dose without changing anything you can see.
Where should instruments be located?
Where they read correctly and can be calibrated without breaking into the process. Those two requirements sometimes conflict, and resolving them is a design decision worth spending time on. The test to apply is simple: imagine the instrument needs calibrating in five years while the plant is running. If the answer involves draining a loop or breaking a sterile boundary, the location is wrong, however convenient it was for the pipe route.
Can you integrate components into a system built by someone else?
Yes, and it is common work. The first step is understanding what is installed and what the original design intended, because a component that keeps failing is usually telling you something about the system around it rather than about itself. Replacing it with a better one sometimes fixes the symptom; understanding why the duty was harder than the specification assumed is what stops it recurring.
What filtration do high-purity water systems need?
It depends where in the system you are. Pretreatment uses depth and carbon filtration to protect downstream membranes. Within the loop, point-of-use filtration is used selectively, because a filter in a distribution loop is a surface that can support growth if it is not managed. Sterilizing-grade filtration at 0.2 micron is used where the application demands it and has to be integrity-testable in place.
How do I get a quote for components or an installation?
Use the form on this page or call 201-450-8280. Useful inputs are the product and duty, the cleaning and sterilization regime the component has to survive, whether the system is already validated, and the existing specification if there is one. If you are replacing something that keeps failing, tell us what failed and how often, because that usually points at the real problem faster than the part number does.
Need components specified, supplied and installed?
Tell us the duty and the cleaning regime they have to survive. Call 201-450-8280 or use the form below.