Yamada's Flapper Pump is designed to support passage of solids up to 30 mm in diameter. Designed for durabilityin the field, the Flapper's innovative flap-type check valvetechnology provides streaming passage of solids whileminimizing clogging and downtime. Four external boltsrelease valve covers on either side permitting service andmaintenance without removing the pump from installation.
■Flapper Pump for Solids Handling
■ApplicationsMud water handling at mining/construction siteWastewater handling at sewage plant, livestock farmand food factoryWastewater handling at petrochemical plant
■Principle of OperationCompressed air enters the left air chamber,moving the center rodto the left, forcing liquidout of the left liquidchamber, while at thesame t ime drawingliquid into the rightliquid chamber.When the center rodis fully to the left thepneumatic logic systemswitches the supply of
air from the left airchamber to the rightair chamber. The center rod then moves to theright, forcing out theliquid from the rightliquid chamber, whileat the same time drawingliquid into the left liquidchamber. Through ofthis action a constant flow of liquid is achieved.
Air chamber
Liquid chamber
■Performance curveThe performance curve shownindicates the data measured withfresh water (viscosity 1mPa・s,specific gravity 1.0) by dip grazing.The amount of liquid dischargedfrom the pump greatly variesdepending on various factors suchas the "viscosity, specific gravity and slurry concentration of liquidto be transferred", "suction lift","discharge head" and "pneumatictransportation distance".
■Specifications
Nominal port size 2”(50A)
Airconnection
Air supply pressure range 0.2MPa - 0.7MPaLimit of slurry 30mm or less
Inlet Rc3/4 (with an air cock) Outlet Rc1 (Equipped with a muffler)
Aluminum（ADC12/AC4C-T6)
※1 Insert material
Inlet Flange JIS 10K50A or equivalentOutlet Flange JIS 10K50A or equivalent
■Design Features
Heavy-duty flap check valve permits passage of solids up to 30 mm. Easy access to valve chambers for easeof maintenanceIn-line maintenance facilitates servicingpump withoutremoval from installation Top-suction / bottom-discharge design keeps solids from settling in pumpBolted construction
Yamada's Flapper Pump is designed to support passage of solids up to 30 mm in diameter. Designed for durabilityin the field, the Flapper's innovative flap-type check valvetechnology provides streaming passage of solids whileminimizing clogging and downtime. Four external boltsrelease valve covers on either side permitting service andmaintenance without removing the pump from installation.
■Flapper Pump for Solids Handling
■ApplicationsMud water handling at mining/construction siteWastewater handling at sewage plant, livestock farmand food factoryWastewater handling at petrochemical plant
■Principle of OperationCompressed air enters the left air chamber,moving the center rodto the left, forcing liquidout of the left liquidchamber, while at thesame t ime drawingliquid into the rightliquid chamber.When the center rodis fully to the left thepneumatic logic systemswitches the supply of
air from the left airchamber to the rightair chamber. The center rod then moves to theright, forcing out theliquid from the rightliquid chamber, whileat the same time drawingliquid into the left liquidchamber. Through ofthis action a constant flow of liquid is achieved.
Air chamber
Liquid chamber
■Performance curveThe performance curve shownindicates the data measured withfresh water (viscosity 1mPa・s,specific gravity 1.0) by dip grazing.The amount of liquid dischargedfrom the pump greatly variesdepending on various factors suchas the "viscosity, specific gravity and slurry concentration of liquidto be transferred", "suction lift","discharge head" and "pneumatictransportation distance".
■Specifications
Nominal port size 2”(50A)
Airconnection
Air supply pressure range 0.2MPa - 0.7MPaLimit of slurry 30mm or less
Inlet Rc3/4 (with an air cock) Outlet Rc1 (Equipped with a muffler)
Aluminum（ADC12/AC4C-T6)
※1 Insert material
Inlet Flange JIS 10K50A or equivalentOutlet Flange JIS 10K50A or equivalent
■Design Features
Heavy-duty flap check valve permits passage of solids up to 30 mm. Easy access to valve chambers for easeof maintenanceIn-line maintenance facilitates servicingpump withoutremoval from installation Top-suction / bottom-discharge design keeps solids from settling in pumpBolted construction
Yamada offers a large range of Air Operated Double Diaphragm Pumps to cater formany different kinds of materials and conditions. When selecting the most appropriatepump for a particular selection and installation please consult your local Yamada Pump Distributor or Yamada Corporation.
CAUTION WHEN SELECTING A PUMP
Yamada CorporationInternational Department
No.1-3, 1-Chome, Minami-Magome, Ohta-ku,Tokyo 143-8504, Japan
