KUVN & KVDN Low-Pressure Variable Pump

KCL’s Variable Vane Pump KUVN and KVDN series provide high-efficiency performance and energy-saving solutions for modern hydraulic systems. We designed these variable pumps to minimize heat generation and noise, ensuring a stable and long-lasting operation for your machinery.

Variable Vane Pump Features and Advantages

KVDN Low Pressure Variable Pump

The KVDN and KUVN series serve as an excellent interchangeable alternative to NACHI UVN pumps, providing identical mounting dimensions and reliable performance.

  • Available in two leak-proof types: Motor-side and shaft-side
  • Energy efficient high performance up 30~40%
  • Lightweight, compact design
  • Low noise, durable life
  • Low heat generation, low temperature rise
KVDN Specification & drawing
KVDN low pressure variable pump

KUVN Variable Uni-Pump

KCL’s Variable Vane Pump KUVN and KVDN series deliver exceptional energy efficiency. In fact, they can reduce power consumption by up to 30~40% while maintaining high-performance output. Additionally, we engineered these pumps with a lightweight and compact design. Therefore, they are highly versatile for a wide range of industrial applications.

Moreover, by prioritizing precision, we successfully minimized operation noise and heat generation. As a result, our pumps provide low temperature rise and a significantly durable service life for your hydraulic systems.

KUVN Specification & drawing
KUVN low pressure variable pump with motor

Ordering Code

KVDN – 8 – A – 3 – 1 – A
① 　 　②　③　④　⑤　⑥

① KVDN Series Variable Vane Pump
② Displacement (cm3/rev) : 8, 12, 16, 21
③ A : Motor-side leak-proof
　 B : Pump-side leak-proof
④ Pressure adjustment range
　 2 : 15 ~ 40 (Kgf/cm2)
　 3 : 35 ~ 61 (Kgf/cm2)
　 4 : 56 ~ 80 (Kgf/cm2)
⑤ Shaft Type 1 : Long Key 2 : Flat Key 3 : Splined
⑥ Type of Suction Port & Discharge Port
　 A or No : RC 　B : NPT
　 C : SAE 　　　 D : BSP

KUVN – 8 – A – 3 – 1 – 22 – 1 – 4 – A
① 　 　②　③　④　⑤　⑥　⑦　⑧　⑨

① KUVN Series Uni-pump
② Displacement (cm3/rev) : 8, 12, 16, 21
③ A : Motor-Side leak-proof
　 B : Pump-Side leak-proof
④ Pressure adjustment range
　 2 : 15 ~ 40 (Kgf/cm2)
　 3 : 35 ~ 61 (Kgf/cm2)
　 4 : 56 ~ 80 (Kgf/cm2)
⑤ Shaft Type 1: Long Key 2: Flat Key 3: Splined
⑥ Motor Voltage (Volt)
　 22 : AC-220V
　 38 : AC-380V
　 44 : AC-440V
⑦ Motor Output (Kw)
　 1 : 0.75 Kw
　 2 : 1.50 Kw
　 3 : 2.20 Kw
⑧ Number of motor poles 4P
⑨ Type of Suction Port & Discharge Port
　 A or No : RC 　B : NPT
　 C : SAE 　　　 D : BSP