Plastic Lined Industrial Valves in West Virginia
West Virginia's chemistry began with brine, and the services that wear out valves today are the same family: wet chlorine and caustic from the cell room at Natrium, hydrochloric and sulfuric acid, methyl chloride and amines in the Kanawha Valley, hydrofluoric acid and fluorinated monomers below Parkersburg, and limestone slurry in the scrubbers on the Ohio and Kanawha rivers.
Marspec Technical Products has supplied lined valves for those duties for more than fifty years: PTFE and PFA lined, quoted with the lined spools we fabricate in Fairhope, Alabama. We supply Swissfluid PFA- and PTFE-lined valves and build automated valve packages in house; Swissfluid USA supports its national distribution network from its facility in Stafford, Texas. Call (251) 625-4949 or contact us online with the service and we will recommend the pattern and the lining.
The services West Virginia puts on lined valves
Cell room chlorine, caustic and brine at Natrium
The chlor-alkali plant at Natrium in Marshall County turns salt into chlorine and caustic soda, and the valves around a cell room see wet chlorine, chlorine-saturated brine, 50 percent caustic and hypochlorite from the vent scrubber. Wet chlorine attacks steel and stainless alike, so isolation belongs on a PFA lined ball or plug valve with a vented ball or plug, lined end to end with a stem that never meets the gas. Brine and caustic feed go on lined diaphragm valves; the hypochlorite tail wants a lined diaphragm valve or a ball valve with a vented ball, vent facing upstream, and a lined check at the pump.
Kanawha Valley acids, solvents and amines
From Belle down to Nitro the specialty chemical units move hydrochloric and sulfuric acid, caustic, methyl chloride, chlorinated solvents and amines through racks that have carried PTFE lined pipe for decades. Much of that valving is due, and a lined plug or ball valve in a carbon steel body drops onto the same flange faces at a fraction of the cost of a nickel alloy valve. Where a batch unit needs a clean draw from a solvent or acid line, a lined sampling valve retires the bleed-and-bucket routine.
Hydrofluoric acid and fluoromonomers below Parkersburg
The fluoropolymer complex on the Ohio below Parkersburg and the polyurethane raw-materials site at New Martinsville handle hydrofluoric acid, fluorinated monomers, isocyanate intermediates, acid and caustic. Aqueous HF attacks glass and most alloys and finds any pinhole in a thin coating. PFA lined ball and diaphragm valves are the right call for aqueous HF: PFA permeates less than PTFE, seals on a smoother surface, and leaves nothing in the stream to pick up fluoride. HF permeates the PTFE face of the diaphragm, so on those lines we supply the PTFE/FPM diaphragm, whose FPM backing resists it, rather than the standard PTFE/EPDM.
Scrubbers, mine water and gas plants
Wet scrubbers at the Ohio and Kanawha river generating stations push limestone slurry, chloride-laden recycle water and gypsum; coal preparation plants and acid mine drainage systems feed lime slurry, caustic and flocculant; the Marcellus and Utica gas plants in the northern counties circulate amine, glycol, methanol and produced brine. Lined diaphragm and butterfly valves carry the scrubber slurries within velocity limits, though rubber-lined valves often outwear them in neutral slurry; PFA lined cylindrical plug valves, up to 6", fit where solids settle, accepting that grit can score the plug; lined ball valves isolate amine and brine. Lime slurry is abrasive but only mildly corrosive and is not lined-valve service.
Lined valves by pattern
Our plastic lined valves page lists sizes and ratings. Everything below has Class 150 flanges to ANSI B16.5, and pressure follows each valve's pressure-temperature rating: ball and plug valves to 232 psi, diaphragm valves lower, 73 psi at 8". Sizes vary by pattern: ball valves 1/2" through 10", plug valves 1/2" through 6", diaphragm valves 1/2" through 8", butterfly valves 1" through 42", ball check and sampling valves 1/2" through 6", and swing check valves 1-1/2" through 24".
Ball valves
Full-bore PFA lined ball valves with a fluoropolymer stem seal and a fully lined body: the caustic isolation valve and, with a vented ball, the chlorine gas isolation valve, quarter-turn and simple to actuate.
Diaphragm valves
Weir-type diaphragm valves with a PFA-lined body and a PTFE-faced diaphragm throttle brine, slurry and hypochlorite with the stem sealed off by the diaphragm itself; nothing to pack and no stem packing to leak.
Plug valves
PFA-lined cylindrical plug valves, 1/2" through 2" full port and 3" through 6" reduced port, are cavity-free, turn at low torque and need no in-line adjustment, the combination a scaling, crystallizing or solids-bearing line needs.
Butterfly valves
PTFE-lined wafer and lug butterfly valves with a PFA encapsulated disc, 1" through 42", for filtrate, brine, dilute acid and slurry at the lowest cost per size.
Check valves
Lined ball and swing checks at the discharge of scrubber, caustic and acid pumps, with every wetted surface fluoropolymer.
Sampling valves
Lined sampling valves take a clean, representative sample from pressurized acid or solvent lines without a dead leg or a splash.
Actuated valves, built and tested before shipment
A cell room or scrubber control loop needs valve and actuator to arrive as one piece, so we assemble automated lined valve packages in-house: pneumatic or electric actuators, positioners, limit switches and solenoids mounted on the valve, stops set and the assembly cycle tested before it ships. Our services page lists the options.
Valves that match the spools
We supply valves as part of a lined system, not as loose parts. The lined pipe spools we fabricate and the lined fittings we supply, 1/2" through 12" in PTFE, PVDF or polypropylene with carbon steel or 304/316 stainless housings, are flanged to ANSI B16.5 so valve face and liner flare mate with the spool's. Our lined pipe and fittings comply with ASTM F1545, lined fittings are welded to ASME B31.3 by welders certified to ASME Section IX, and every lined pipe spool and fitting passes a minimum 10,000-volt spark test. See our West Virginia lined pipe page for spools, our technical details page for liner temperature limits, liner thicknesses, flange dimensions and torque tables, and our piping accessories page for lined strainers.
Serving the Kanawha and the Ohio
Charleston, South Charleston, Institute, Belle, Nitro, Huntington, Point Pleasant, Parkersburg, New Martinsville, Moundsville, Wheeling, Weirton, Morgantown and Clarksburg get lined spools and valves shipped nationwide from Fairhope, Alabama. Give us the fluid, concentration, temperature, pressure and size, and the job the valve does: call (251) 625-4949 or contact us online.
FAQ: Plastic Lined Industrial Valves in West Virginia
What valve and lining do you recommend for wet chlorine at an Ohio River chlor-alkali plant?
A PFA lined ball or plug valve with a fully lined body, so no metal part is wetted and the stem seal is fluoropolymer. PFA permeates less than PTFE, which matters on chlorine, and we pair it with lined pipe and fittings so there is no dissimilar joint on either side.
Can lined valves replace the alloy valves on Kanawha Valley acid and solvent racks?
In most hydrochloric, sulfuric, caustic and chlorinated solvent services, yes. A PFA lined valve in a carbon steel body covers a wider range of chemistries than any single alloy and bolts to the same ANSI B16.5 faces the old valve used. It has Class 150 flanges, with pressure per the valve's pressure-temperature rating (232 psi for ball and plug valves, less for diaphragm valves); on hot HCl, permeation sets the temperature limit. Chlorinated solvents can build a static charge that pinholes a plain lining or ignites vapor, so bond and ground the spools and use anti-static PFA-AS valves; tell us if your specification calls for an anti-static liner.
Will a lined valve hold up on hydrofluoric acid at a fluorochemical plant near Parkersburg?
PFA lined ball valves, and diaphragm valves with the PTFE/FPM diaphragm, are a standard answer for aqueous HF and wet fluorinated intermediates, which attack glass, stainless and most alloys. Send us the concentration and temperature and we will confirm the rating.
Which lined valves fit limestone slurry at a West Virginia scrubber or lime slurry at a mine drainage plant?
For limestone slurry, lined diaphragm valves for throttling and lined butterfly valves for isolation on larger lines, with PFA lined cylindrical plug valves where solids settle and pack, accepting that grit can score the plug. Keep velocity in the range the liner tolerates and the valves outlast the unlined steel they replace, though rubber-lined valves often outwear fluoropolymer in neutral slurry. Lime slurry is abrasive but only mildly corrosive, so it is not lined-valve service.