BN ball and diaphragm (note: 'BN' may be a typo or internal code
but it is intended to function as a critical wear part within GRACO pumps or fluid handling systems
but typical rebuild kits include a combination of elastomeric
Regular inspection and replacement of seals can prevent downtime and maintain pump efficiency
especially for flammable or hazardous liquids where static electricity control is critical
GRACO Python XL-DA Pneumatic Chemical Injection Pump, 4-1/2 in Air Motor, 1/2 in Plunger, Ceramic Coated, TFE/P Seals, CE Approved - (SKU: A22411) BN ball and diaphragm (note:The GRACO Python XL DA Pneumatic Chemical Injection Pump is a pneumatically operated pump designed for injecting chemicals in non hazardous environments. It features a ceramic coated plunger and TFE P seals, making it suitable for handling various chemical fluids. Key Features: Pneumatic Chemical Pump 4 1 2 in Air Motor, 1 2 in Plunger Ceramic Coated Plunger, TFE P Seals CE Approved Double Acting for increased flow Self Priming to prevent air lock