Can SilcoTek coat valves, regulators, and flow controllers?
Absolutely! SilcoTek can coat the internal and external metal pathways for most flow regulating andmetering devices to enhance their inertness and
provide corrosion resistance. In order to coat the surfaces, all valves, regulators, and flowmeters should be dissembled and all seals or partswhich
cannot be exposed to temperatures of approximately 400°Cmust be removed. Disassembly should only be performed by qualified personnel with the
appropriate seal kits, tools, and training OR damage or failure to the device will occur. For these reasons, SilcoTek cannot take on the responsibility of
disassembly or reassembly of any valve, regulator, or flowmeter. If you do not have the experience and parts necessary to dissemble these devices, we
recommend that you get in touch with Swagelok, Parker, or your valvemanufacturer and order the coating treatment directly from them. SilcoTek has
business relationshipswith most manufacturers and routinely coats the internal and external surfaces of valves, regulators, and flowmeters for them. The
manufacturer will send the parts prior to assembling to SilcoTek for coating and will assemble the parts at their factory under the guidance of their quality
systems.
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Wheredo I order coated valves, regulators, and flow controllers?
The following companies routinely provide coated parts:
Swagelok
– Find your local distributor at
For SilcoNert 2000 (Siltek/Sulfinert) treated fittings ask your local Swagelok distributor to add the following suffix to your part number:
+ Fittings: add –JA
+ Valves & sample cylinders: add -12457
Parker
– Find your local distributor at
Ask your Parker distributor for SilcoNertâ„¢ 2000 (Siltek/Sulfinert) treated fittings and valves
Valco
-
Ask your Valco distributor for SilcoNert 2000 (Siltek/Sulfinert) treated fittings and valves
Emerson/Tescom
-
Ask your Emerson/Tescom representative for SilcoNert 2000 (Siltek/Sulfinert) treated regulators.
Concoa
-
Ask your Concoa representative for SilcoNert 2000 (Siltek/Sulfinert) treated regulators.
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Will brazing impact thequality of the coating?
Yes, brazed jointswill outgas during the coating process and will negatively impact the coating quality. SilcoTek does not recommend coating over brazed
joints. Coated brazed joints appear as amatte brown finish and can have increased activity/reactivity at the brazed joint. SilcoTek recommends vacuum
brazing or welding of joints for best coating quality. Vacuum brazing is a high temperature, flux-free brazing process that results in a contamination free
joint. SilcoTek recommends vacuum brazing services from Solar Atmospheres Inc.
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Do I need to pre-cleanmy parts prior to sending them to SilcoTek for coating?
Your parts are precision cleaned by SilcoTek prior to processing. Additional pre-cleaning by the customer is often unnecessary and at times can be
detrimental to our coating process.
In order to provide the highest quality coating and fastest processing; notify SilcoTek of any prior chemical exposure (regardless of whether the part is
new or used). Chemicals like cutting oils, pickling acids, solvents, water based cleaning compounds or other hazardous or non hazardous chemicalsmay
impact the coating process. Many times the customer's cleaning process or chemical exposure can be eliminated, saving the customer time andmoney.
Before sending parts to SilcoTek, contact your SilcoTek representative at
or call us at (814) 353-1778
Can SilcoTek coat fritted liners?
SPECIAL NOTE: Coating of glass fritted liners: SilcoTekwould prefer that all glass liners be sent without deactivation (e.g. silanization) since the
deactivation layer will prevent our intermolecular coatings from bonding to the surface. For most glass liners, our cleaning processwill remove all prior
deactivants. However, SilcoTek cannot put fritted liners through our cleaning process without damaging the frit.
Fritted liners are special because there is no effective way of cleaning glass frits or stripping the coating in case of failure. Aswe continue to gain
experiencewith glass frits and tailor our processes, wewill get better. Our major hurdle is being able to "test" fritted liners prior to coating to ensure they
are clean. We continue towork on this aspect of our operation.
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