Series U/PB

The U/PB series centrifugal fans are designed to take up and convey air, even if dusty, at temperatures of up to a maximum 80°C.
These fans are used in industrial plants requiring medium-to-high pressures; furthermore they can also be used to convey solid materials, except strings, mixed with air.
The strong steel sheet spiral casings are rimmed and welded. These fans also have a base for the motor and the discharge angle can be regulated in 45° steps by rotating either clockwise RD or counter-clockwise LG (see discharge direction table).
The strong welded steel sheet impellers with high performance, backward-curved blades, have been carefully balanced both statically and dynamically.
The motors installed are asynchronous, three-phase or single-phase, 2 or 4 poles, B3, with IP55 protection, self-ventilated, designed for continuous service and are UNEL and IEC compliant.

ACCESSORIES

	RP		inlet protection net
	GA		intaking vibration-damping joint
	RA		intaking joint
	RF		inlet flanged fitting
	CA		inlet counter-flange
	FL		inlet filter
	SA		inlet silencer
	SF		throttle valve
	SD		Dapò flow regulator
	RM		outlet protection net
	GM		feed vibration-damping joint
	CM		outlet counter-flange
	QT		outlet square-round joint
	SM		outlet silencer
	TS		discharge plug
	PI		inspection door
	AV		vibration dampers

Throttle valve (SF) from mod. U/PB 250 to mod. U/PB 800
Dapo' flow regulator (SD) from mod. U/PB 500 to mod. U/PB 1000
Square-round joint (QT) from mod. U/PB 250 to mod. U/PB 560

SPECIAL VERSIONS

	AI		made of stainless steel AISI 304 to extract corrosive fumes
	AS		anti-spark version in accordance with ANIMA-COAER standards (table NV105)
	HZ		manufactured to work at Hz. 60
	HT		conveyed fluid temperature up to a maximum of 250°C (this version is made with longer shaft motor and extra cooling fan)
	SB		arrangement 5 with motor type B5 or B3/B5 without motor support base
	TH		high protection for use in tropical climate with high degree of humidity
	TR		belt drive, 9 or 12 arrangement