Versatility meets design

Mod­u­lar, resilient, ver­sa­tile – these are the core prop­er­ties of the quar­ter turn actu­a­tor DFPD from Fes­to. This rack and pin­ion com­bi­na­tion is thus the per­fect actu­a­tor for many require­ments in the process industry.
Thanks to its ver­sa­til­i­ty and flex­i­bil­i­ty, the DFPD can be used in a vari­ety of sec­tors and mar­kets. Its mod­ern, sim­ple and com­pact design impress­es, whether it is used with ball valves, shut off valves or air dampers in the chem­i­cal, phar­ma­ceu­ti­cal or bev­er­age indus­try or for water treat­ment and oth­er areas of process automa­tion. The rack and pin­ion com­bi­na­tion is a great addi­tion to the mar­ket, in both the sin­gle and dou­ble-act­ing ver­sions with max­i­mum torque of up to 2300 Nm.

Flexible in operating pressure

The sin­gle-act­ing ver­sion of this new quar­ter turn actu­a­tor is par­tic­u­lar­ly com­pact and extreme­ly mod­u­lar. Thanks to the opti­mised spring design it can be con­fig­ured in incre­ments of 0.5 bar for more effi­cient use. With the nine dif­fer­ent spring com­bi­na­tions, the quar­ter turn actu­a­tor DFPD meets the most pre­cise oper­at­ing pres­sure require­ments of between 2 and 6 bar. The rota­tion angle for stan­dard sizes is up to 90° and for the sizes 40, 120, 240 and 480 it even ris­es to 180°.
The basic ver­sion of the DFPD is suit­able for tem­per­a­tures between ‑20 and +80 °C. The low-tem­per­a­ture vari­ant is designed for arc­tic regions and cov­ers a tem­per­a­ture range of ‑50 °C to +60 °C. The high-tem­per­a­ture vari­ant can be used at tem­per­a­tures of between 0 °C and +150 °C. With its ver­sa­tile and cor­ro­sion-resis­tant sur­face coat­ings, the actu­a­tor can also be reli­ably and flex­i­bly used in harsh con­di­tions. It can be mount­ed any­where and the end posi­tions can be adjust­ed by ± 5° at both ends, ensur­ing high flex­i­bil­i­ty dur­ing operation.

A complete package covering the entire value chain

In com­bi­na­tion with the CMSX posi­tion­er, it is ide­al­ly suit­ed for the ana­logue con­trol of quar­ter-turn actu­a­tors, e.g. in dos­ing tasks. Fur­ther­more, the sen­sor box­es SRBC/SRBE/SRBG enable sim­ple dig­i­tal con­trol and full posi­tion sens­ing. And this is pos­si­ble out­doors as well as in poten­tial­ly explo­sive envi­ron­ments. The NAMUR valves VSNC are cer­ti­fied world­wide in accor­dance with all the cur­rent stan­dards. For safe­ty-ori­ent­ed appli­ca­tions, the robust pilot valves VOFC and VOFD are per­fect addi­tions. The sole­noid valves can be wide­ly used and meet the high­est safe­ty stan­dards (up to SIL3, explo­sion pro­tec­tion). This allows Fes­to to pro­vide com­plete automa­tion of quar­ter-turn actu­a­tors for a large range of applications.