Omega Engineering BV70 manual Installation Instructions, Maintenance, Dimensions

INSTALLATION INSTRUCTIONS

Tube (initial assembly):

1.Ensure the tube end is square and free from burrs, nicks, scratches and debris.

2.Loosen the NUT by turning it counter-clockwise one turn. Insert the tube though the NUT and FERRULES until it sits against the internal VALVE SHOULDER. Tighten the NUT (clock-wise) hand tight. Continue tightening the NUT with a wrench for 1 to 1-1/4 turns or until snug.

Note: for re-assembly, after initial assembly, approximately 1/4 turn with wrench is generally required to re-tighten.

MAINTENANCE

The BV70 Series utilizes our self compensating stem seal design. This design automatically compen- sates for wear as well as thermal expansion and contraction resulting in a leak tight, maintenance free, service life.

Once the stem seal has worn beyond the compensation afforded by the Belleville springs adjustment of the stem nut may enable valve to be returned to service. Holding the ‘flats’ of the stem, tighten the stem nut until Belleville springs become fully compressed (flattened); the torque required to tighten the nut further increases sharply when this point is reached. Do not tighten the stem nut beyond this point to avoid damage of the stem seal.

DIMENSIONS

Tube		Dimensions - Inches
Size OD
	A	B	C	D	E	F
1/4	3.72	1.58	.50	2.31	.19	9/16
3/8	3.70	1.58	.50	2.31	.28	11/16
1/2	3.94	1.58	.50	2.31	.36	7/8
3/4	4.17	1.67	.59	3.41	.49	1-1/8
1	4.92	1.91	.75	3.41	.62	1-1/2

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