KNF has announced its newest addition to its OEM swing-piston pump line, the NPK04. The NPK04 is suitable for use as a transfer pump, is available in compressor or vacuum pump models, and can be operated in any position. Its sealed, swing piston moves media oil-free and without adding contamination. Despite its size, it features 3.3ltrs/min of free flow, and is available in an optimized version for vacuum (max. 21.6in Hg) or pressure (max 31psig) generation. Two motor options include standard DC or an economical brushless-dc motor. The BLDC model is only 2.5in long, is available with optional logic speed control interface and features low EMI/RFI.