High Quality resin construction

The entire pump and its component parts are flawlessly molded with an all resin construction. The Pump’s stability and quality are assured even in the harshest conditions.

All necessary measures taken for thermal expansion

Because the resin is resistant to high temperatures and is constructed to absorb thermal expansion, the pump is capable of handling high temperature solutions and chemicals.

Maintenance Free

Constructed with no consumable parts (such as mechanical seals), the pump is free from problems such as leaks, wear and tear, and excess heat. This makes maintenance and inspection an incredibly easy task with very low maintenance costs.


This patented VALVELESS feature have been a World Chemical trademark since 1971. Because of its unique priming mechanism, this pump does not require any foot valves. Also, the built-in check valve increases priming speed and reduces back-flow velocity to retain maximum liquid in the priming chamber at pump shutdown.


  • YD-2501NSF
  • YD-4002NSF
  • YD-5003NSF


  Bore HP
YD-2501NSF 1″ × 1″ 1(0.75)
YD-4002NSF 1.5″ × 1.5″ 2(1.5)
YD-5003NSF 2″ × 2″ 3(2.2)


Performance Curves


Examples of Use


  • Transferring/circulating pump for plating liquid to heat exchangers or filters
  • Drawing/transferring pump for liquid from drainage pits or chemical liquid tanks

NSF-LR(with linear seal)

  • For glass abrasive materials of slurry liquid.



  • High Quality resin construction
  • All necessary measures taken for thermal expansion
  • Maintenance Free
  • Valveless
  • Uniquely resistant to high temperatures
  • Resistant to wide range of chemicals

NSF-LR(with linear seal)

  • Adhere contactless seals by repelling magnetic force during operation; adhere seals by suction magnetic force while the system is stopped.
  • Possible for self-priming/deadhead operations.
  • CFR PP Material is standard, other material required minimum quantity .



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