Plastic Lined Industrial Valves in South Carolina
Hydrochloric pickle liquor at Huger, chlorine dioxide at Eastover, sulfuric leach at a Berkeley County battery recycler, brass-plating acid at the Upstate tire plants: South Carolina's process streams differ in chemistry but agree that an unlined valve will not last. The right lined valve for each is a question of pattern as much as lining.
Marspec Technical Products of Fairhope, Alabama supplies plastic lined valves in PTFE and PFA and fabricates the lined spools and fittings they bolt to, backed by more than half a century of plastic-lined piping. 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 media and conditions and we will specify the valve.
Where lined valves earn their keep in South Carolina
Pickle liquor, leach liquor and solvents
The steel mill at Huger pickles coil in hydrochloric acid and regenerates the spent liquor, and Redwood's battery-recycling plant in Berkeley County leaches black mass in sulfuric acid to recover lithium, nickel, cobalt and copper. In the Upstate, the tire plants that make South Carolina the country's leading tire producer brass-plate and pickle cord in sulfuric acid and copper and zinc sulfate, and their compounding areas move solvents and process oils, while the specialty and pine-chemical producers around North Charleston run solvent, acid and resin streams. Iron chloride, scale and sulfate solids in the acid circuits pack a ball valve cavity, so acid circulation gets PFA-lined cylindrical plug valves and fresh and regenerated acid gets lined ball valves; PFA-lined ball valves isolate the solvent lines too. Many of those 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.
Chlorine dioxide at the kraft mills
The kraft mills at Eastover and Bennettsville bleach with chlorine dioxide made on site from sodium chlorate and sulfuric acid, plus caustic, peroxide and hot filtrate. Chlorine dioxide and chloride-rich filtrate pit stainless steel in months, and a lined valve costs less than the alloy that resists them. PFA-lined diaphragm valves throttle generator and tower lines, lined plug valves isolate chlorate and acid, and lined butterfly valves handle filtrate and extraction caustic. Chlorine dioxide 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.
Valve types we supply
All six patterns are flanged to mate with ANSI B16.5 lined pipe, PFA-lined apart from the PTFE-lined butterfly. 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"; our plastic lined valves page carries the full size lists and ratings.
Ball valves
PFA-lined body, PFA-encapsulated ball, quarter-turn and bubble-tight. Isolation on HF, nitric acid, pickle liquor, caustic and solvents, with a bore that flushes clean.
Diaphragm valves
A PTFE-faced diaphragm closing on a PFA-lined body is the seal, so the stem never touches the process: no packing, no dead leg. For throttling chlorine dioxide, dosing hypochlorite and nitric acid service.
Plug valves
PFA-lined cylindrical plug valves, 1/2" through 2" full port and 3" through 6" reduced port, cavity-free, with no in-line adjustment: low torque and no cavity for pickle scale or sulfate solids.
Butterfly valves
PFA-encapsulated disc in a PTFE-lined wafer or lug body, 1" through 42", for filtrate, rinse water, brine and dilute acid where a compact valve is wanted.
Sampling valves
Lined sampling valves pull a clean, representative sample from acid, leach and solvent lines with no dead leg and no operator exposure.
Check valves
Lined ball and disc checks stop backflow at acid, hypochlorite and chemical feed pumps, with no wetted metal to corrode.
Automation
Marspec assembles automated valve packages in-house, mounting pneumatic and electric actuators, positioners, limit switches and solenoids on the lined valve and testing the finished assembly before it ships. Bleach plant sequences and pickle line interlocks run on that kind of package; we need only the control signal, fail position and air or power supply to size it.
Matching valves to the lined pipe system
We fabricate the lined spools and fittings our valves bolt to in 1/2" through 12" sizes, PTFE, PVDF or polypropylene liners, carbon steel or 304/316 stainless housings. Our fittings follow ANSI B16.5 dimensionally and are welded to ASME B31.3 by welders certified to ASME Section IX, each lined spool and fitting is spark tested at no less than 10,000 volts, and our lined pipe and fittings comply with ASTM F1545. Spectacle blinds from our piping accessories isolate a valve for service, and material certifications travel with the order. Torque tables are on our technical details page; the industries are covered on our South Carolina lined pipe page.
Serving the Lowcountry, Midlands, Pee Dee and Upstate
Spools and valves ship from Fairhope, Alabama, to Charleston, North Charleston, Goose Creek, Moncks Corner, Columbia, Aiken, Orangeburg, Florence, Hartsville, Rock Hill, Greenville, Spartanburg, Anderson and Seneca. Send a valve takeoff or the P&ID and we will quote valves, actuators and spools. Call (251) 625-4949, or contact us online.
FAQ: Plastic Lined Industrial Valves in South Carolina
Can lined valves handle hot hydrochloric pickle liquor at the Huger steel mill or sulfuric leach at the Berkeley County battery recycler?
Yes. PTFE and PFA resist hydrochloric and sulfuric acid at any concentration within their temperature range, though HCl permeates them as temperature rises, and lined plug valves tolerate the iron chloride, scale and sulfate solids those circuits carry without packing or seizing.
Which lined valves go into a chlorine dioxide bleach plant at Eastover or Bennettsville?
PFA-lined diaphragm valves with the PTFE/FPM diaphragm on generator and tower lines, lined plug valves on chlorate and sulfuric acid feed, and lined butterfly valves on filtrate and extraction caustic. Chlorine dioxide pits stainless steel; fluoropolymer linings resist it.
Do you automate lined valves for South Carolina plants, and who mounts the actuator?
We do, in our own shop. Actuator, positioner, limit switches and solenoid are mounted on the lined valve, stroked and tested before shipment, so the package arrives ready for air and wiring rather than as parts to assemble on site.