FMC offers a complete range of proven piggable valves, from basic "Line Distribution Valves" to more sophisticated extensions such as clarinets or multidirectional valves, available in various diameters, in steel or stainless steel. The use of piggable distribution valves allows for shortest cleaning time of the pipe, the elimination of wasted products or slops resulting in significant financial savings.
Head Line Distribution Valve - HLDV
FMC HLDV's are installed at both ends of each line and act as the launching and receiving station of a pig. These valves allow the fluid to come in or leave from the Piggable pipe to various destinations. Manual or fully automatic, HDLV's consist of a piggable body, an integrated ball valve bolted on the piggable body, that is specially designed to minimize product retention during the pigging operation, two magneto-inductive sensors to detect the pigs and a pneumatic stopper. The air/gas manifold injects or exhausts the air used to propel the pigs and allows the pig to be propelled at constant speed in the line during pigging, and the line to be depressurized at the end of the transfer.
In Line Distribution Valve - ILDV
FMC ILDV's are installed in the pigged line. They permit introduction - or extraction - of a product from the pigged line to various destinations. They are similar in design to the HLDV. They feature the same body design but are not equipped with end flanges as they are installed in the line and not at the end. Like HDLV's, In-line distribution valves can be fitted with an air pressure and exhaust manifold and supplied with a pneumatic pig stopper.
Clarinets
FMC piggable clarinets incorporate all the elements of an HDLV and of several ILDV's on a single common body mounted on a skid. It incorporates all the advantages of the above while taking up less space. There are also no flange connections, thus eliminating the risk of leakage and contamination.
Three-Way Valves - 3WV
The three-way valve allows the transfer of a product between three lines. It considerably simplifies piping layout and completely removes any risk of cross contamination between products. The spherical design of the pocket free ball valve eliminates the need for additional valves. It completely seals off the line not being used and the operations can be controlled either manually or by remote control.
Multidirectional Valve - MDV
The FMC Multidirectional Valve allows the operator to manage up to 8 different outlets through a single line with no risk of mixing them. The configuration comprises 1 inlet with between 4 and 8 outlets.
TWIN Valve concept 
A twin piggable valve consists of a single body equipped with two inlets, or outlets. This concept allows only one piggable valve to be used instead of two. It applies to HLDV's, ILDV's and clarinets. The advantages of a twin piggable valve is its compactness, the reduction in the number of air supplies and pig stoppers resulting in a corresponding reduction of automated inlets and outlets.