EVP SV-series rotary vane vacuum pump upgrade

EVP SV-series rotary vane vacuum pump upgrade

Based on years’ study and researches, EVP engineering team has worked out and promoted an updated SV single stage rotary vane vacuum pump with many improvements. For more details, please see below comparison:

no.	upgrade item	old type or competition pump	EVP upgraded pump
1	pump photo
2	indicating & danger signs	rotation direction arrow, some with high temperature signs	except for existing signs, adding the signs to indicate the function of each pump,attention signs for maintenance and operation. and all signs in English with danger sketch.
3	painting	/	optimized the proportion of painting, solidifying solvent, diluent. better
4	size	size deviation for each batch for several raw material supplier	all raw material purchased from on stable foundry,no deviation on raw material. add dimension measurement inspection on finished components.
5	sealing
		sealed by asbestos gasket with glue on each side to seal the connecting joints	use flurorruber material, it’s pressed on casting parts, the gasket will not move and can be repeatedly used after dissembling.
6	add clean process on finished components	N/A	before finished components assembled, oil tank cleaned by jet pump, especially on each corner of oil tank; together with the rest items,  all cleaned by ultrasonic cleaner;
7	assembled pump	performance test done with small volume of test oil left inside of pump	performance test done, and test oil drained.
8	suction filer
		requiring adapters to connect pump and filter, it increases leaking point.	uniformed, filter can connect to the suction port directly

If you have any interests, please contact EVP team directly.

Key words: Single stage rotary vane vacuum pump, SV, rotary vane vacuum pump

Edited by: Emily Fu (Shanghai EVP Vacuum Technology Co., Ltd.)