Operation Manual

4-3

IM 1F5B2-01E

4. MOUNTING

• When pulsating pressure caused by a T-type piping exist, install the valve on the

upstream of the flowmeter.

Example: As shown in the figure below, when the valve V1 is turned off, the fluid

flow through B, as to meter A the flow is zero. But due to the pulsating

pressure is detected, the meterís zero point become fluctuating. To avoid

this, change the valve V1 location to V1’.

V1V1'

Valve (Off)

Flow

Relocating

Figure 4.1-4b Piping where Paulsating Pressure Caused by a T-type Piping

■ Piping That Prevents Cavitation from Occurring

IMPORTANT

• Avoid mounting ULTRA YEWFLO with its downstream side open to the atmosphere.

Otherwise, there will be an increased risk of cavitation.

■ The case of downstream open to the air:

If downstream open to the air, the cavitation possibly occurs. Avoid this kind use.

If such piping cannot avoid, up and down the downstream pipe as shown the figure

below, or, install a valve on the downstream side.

Installation Example

Pump

Tank

Figure 4.1-5 Piping when downstream open to the air

■ Joint Pipes

For joint pipes, use pipes with an inner diameter greater than that of ULTRA YEWFLO

(use pipes with a schedule number no larger than 80 for joint pipes with a nominal inner

diameter ranging from 25 mm to 100 mm).

IMPORTANT

• Exercise care to prevent the gaskets inserted between ULTRA YEWFLO and the joint

pipes from protruding into the flow path.