Model 25B Pump Versatile, air-operated, hydraulic pump for heated or unheated spray systems and fluid delivery applications. Features and Benefits eciprocating plunger and packing design — R reduces pump wear and maintenance costs. ide selection of “standard” packing materials — W for use with a variety of coating formulations. ard-chrome wear surfaces — for long life using H abrasive coatings. ounting versatility — wall, drum, five-gallon pail M or dolly mounting accommodates varying application requirements. tandard type U packing glands — offer excellent S abrasion resistance with zero water absorption for much longer packing life. arge, stainless-steel ball checks — provide smooth L fluid delivery with high-viscosity coating materials. arge, enclosed solvent chamber — lubricates plunger L and increases upper packing life. echanical air valve — provides reliable, fast cycling M action to minimize pressure fluctuations for a more uniform spray pattern. heet metal cover — protects pump from the hazards S of normal industrial environments. Model 25B Pump P ositive-displacement, demand-type pump. Available in 2:1, 4:1, 16:1, and 27:1 fluid-to-air ratios. Dual-acting, single-piston design. Patented ScoreGuard™ hard coated plunger. Circulating and non-circulating systems. atented ScoreGuard precision-ground, hard-chrome P hydraulic plunger — ensures long service life. ir-operated pump — can be safely used in hazardous A locations with solvent-based coatings. elf-adjusting hydraulic packing glands — need no S maintenance throughout their Wall, drum, five-gallon pail or dolly mounting. Self-adjusting packings.

Model 25B Pump Typical Applications The Nordson model 25B pump is available in several fluid-to-air ratios. The 27:1 ratio pump is well suited for high-pressure, airless painting applications where heavy-bodied primers and coatings are sprayed, as in boat-yards, marine applications and miscellaneous metal fabrications. The 16:1 pump is used in heated paint applications and lower viscosity applications such as industrial enamels. The 4:1 and 2:1 versions are ideal for low-pressure, higher-volume applications including air-atomized paint systems. The 16:1 and 27:1 versions of the 25B pump are available...