Model 25B Pump

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Versatile, air-operated, hydraulic pump for heated or unheated spray systems and fluid delivery applications. Model 25B Pump Positive-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.

Wall, drum, five-gallon pail or dolly mounting. Self-adjusting packings. 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 in stainless steel for corrosive and waterborne applications, as well as several non-paint applications including cold glue and adhesives. Features and Benefits Reciprocating plunger and packing design 4 reduces pump wear and maintenance costs. Wide selection of cstandard d packing materials 4 for use with a variety of coating formulations.

Hard-chrome wear surfaces 4 for long life using abrasive ... more. less.

coatings. Mounting versatility 4 wall, drum, five-gallon pail or dolly mounting accommodates varying application requirements. Standard type U packing glands 4 offer excellent abrasion resistance with zero water absorption for much longer packing life. Large, stainless-steel ball checks 4 provide smooth fluid delivery with high-viscosity coating materials. Large, enclosed solvent chamber 4 lubricates plunger and increases upper packing life. Mechanical air valve 4 provides reliable, fast cycling action to minimize pressure fluctuations for a more uniform spray pattern. Sheet metal cover 4 protects pump from the hazards of normal industrial environments. Patented ScoreGuard precision-ground, hard-chrome hydraulic plunger 4 ensures long service life. Air-operated pump 4 can be safely used in hazardous locations with solvent-based coatings. Self-adjusting hydraulic packing glands 4 need no maintenance throughout their life and cannot be overtightened or neglected. Model 25B Pump © 2004 Nordson Corporation All Rights Reserved United States Amherst, Ohio Telephone: 800.955.9563 Facsimile: 440.985.1536 Web: www.nordson.com/liquid E-mail: liquidmarketing@ nordson.com www.nordson.com Canada Markham, Ontario Telephone: 800.463.3200 905.475.6730 Facsimile: 905.475.8821 www.nordson.ca Europe Erkrath, Germany Telephone: 49.211.9205.0 Facsimile: 49.211.254658 E-mail: info@de.nordson.com Japan Tokyo, Japan Telephone: 81.3.5762.2700 Facsimile: 81.3.5762.2701 E-mail: ppa.dm@nordson.co.jp www.nordson.co.jp Asia/Australia/Latin America Amherst, Ohio Telephone: 440.985.4000 24-hour message service: 440.985.4797 E-mail: intcustomerservice@ nordson.com Nordson reserves the right to make design changes to products to improve their function. These changes may occur between printings. For more information, talk with your Nordson representative or contact your Nordson regional headquarters office. Nordson Corporation " 300 Nordson Drive " Amherst, Ohio 44001 Model 25B Pump * Fluid pressure capability based upon a normal operating air pressure range of 20-80 PSIG ** One cycle = 2 strokes Specifications Fluid-to-Air Pressure Ratio2:14:116:127:1 Nominal Operating Fluid Pressure Range* 40-160 PSIG80-320 PSIG320-1280 PSIG540-2160 PSIG (3-11 kg/cm 2 )(6-22 kg/cm 2 )(22-90 kg/cm 2 )(39-152 kg/cm 2 ) Fluid Delivery GPM (liters per minute) 15 cycles** per minute1.50.75.20.12 (5.7)(2.80)(.76)(.45) 30 cycles per minute3.001.50.40.24 (11.4)(5.7)(1.51)(.91) 60 cycles per minute6.003.00.80.48 (22.7)(11.4)(3.03)(1.82) Pump Cycles Per Gallon102077125 Per Liter2.65.22033 Gallons Per Cycle 0.1000.0500.0130.008 Liters Per Cycle 0.390.1950.0500.030 Air Requirements @ 15 cycles (60 PSIG or3.8 CFM3.8 CFM3.8 CFM3.8 CFM 4.22 kg/cm 2 )(1.85 l/sec.)(1.85 l/sec.)(1.85 l/sec.)(1.85 l/sec.) Maximum Working Pressure 175 PSIG350 PSIG1500 PSIG2500 PSIG (12.3 kg/cm 2 )(25 kg/cm 2 )(106 kg/cm 2 )(176 kg/cm 2 ) Minimum Air Line Size Recommended (I.D.) 3/8 in. (9.5 mm) LQL-04-0614 Revised 5/04 © 2004 Nordson Corporation All Rights Reserved

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