Electricity + Control July 2017

VALVES + ACTUATORS

the flow passage from the outlet port A to the exhaust port R to be released but at the same time ensuring that the main valve is and remains closed preventing any loss of air. The pilot air of the piston is also exhausted from the pilot valve and the piston is returned upwards due to a spring.

♦ Sonic conductance C value: Up to 2.3 times the AV2000-02 Body size New product: C value dm 3 /s・bar (Effective area mm 2 ) Current product:C value dm 3 /s・bar (Effective area mm 2 )

AV2000-02 AV3000-03 AV4000-04 AV5000-06 AV5000-10

9,2(46)

4(20)

13,1(65) 19,2(96) 34,8(174) 41,3(217)

7,4(37)

12,2(61)

22,6(113)

24,4(122) Table 2: Thanks to its built-in silencer (optional), space saving is achieved in the AV ] series. The above table demonstrates the improved flow rates. Since the flow characteristics from 1(P) to 2(A) has been improved, the rapid supply time has been reduced by almost half (compared with the old AV series). Conclusion The characteristics and features of the new AV-A series are indicators of just how much research has been put into this. From its size reduction to power savings, each detail has been carefully thought out to match not only the requirements of those customers who submitted NPDPs but for all customers who can now benefit. Training has been conducted around the coun- try and sales engineers have been receiving cus- tomer feedback in the form of surveys to ensure that the refreshed product meets and exceeds re- quirements and expectations.

Figure 3: The switching point for the main valve to open as a function of the inlet and outlet pressure.

Space savings Models

Compared with Reduced size

AV2000-A AV3000-A AV4000-A AV5000-A

AN20-02 AN30-03 AN40-04 AN500-06

37 mm 49 mm 56 mm 92 mm

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Brian Abbott is Product Manager at SMC Pneumatics.

kmccarthy@smcpneumatics.co.za www.smcpneumatics.co.za

38 Electricity + Control

JULY 2017