Tow-Shift adjustable gas ballast valve satisfies different requirements of condensable vapor(such as water vapor) to be exhausted out of pump in different processes.
Dual protection of oil anti-sucking back ensures vacuum system from oil pollution when pump stops running and needs to be easily restarted.
Forced oil circulation system consisted of oil pump and constant pressure oil supply mechanism ensures stable running of the pump.
Less components are used, easy to maintain and repair.

Specification

Displacement speed m3/h(L/s): 50/60Hz 90(25)/108(30)

Ultimate total pressure gas ballast close(Pa): 4*10-2

Ultimate total pressure gas ballast close(Pa): 4*10-1

Ultimate total pressure gas ballast open(Pa): 8*10-1

Power supply: 3-Phase

Power rating(kw): 8kw

Intake and exhaust DN(mm): KF40

Oil capacity(L): 3.3-4.5

Motor speed (rpm): 50/60Hz, 1440/1720

Ambient temperature(℃): 5-40

Noise level(dB): ≤63

Net weight(kg): 65

NADE VRD-90 VRD Series Perfect Performance Tow-Shift adjustable gas ballast valve satisfies VRD Series Bipolar vacuum pump

Shipping & Returns Policy

Shipping Information

Dhaka Only: Same-day or next-day delivery within Dhaka city limits and cost only ৳80 TAKA.
Out Of Dhaka: 1–3 working days for most locations within Bangladesh and cost only ৳120 TAKA.

Know more details.