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Weld Fittings

Weld fittings are commonly used in vacuum roughing lines on semiconductor process equipment and for forelines and pump exhaust lines in semiconductor subfabs. All tees and crosses are fabricated with the pulled-port technique and full penetration butt welds. This provides crevice-free weld joints and the maximum in cleanliness for UHV applications. Weld fittings are available from stock in 304 stainless steel, and some sizes are stocked in 316L stainless steel for additional corrosion resistance. All weld fittings are available with various flange combinations.

Applications:

Conical Reducers
End Cap
Ball Socket
Elbows
Tee
Cross

Conical Reducers:

MODEL NUMBER	TUBE 1 OD	TUBE 2 OD	A	WALL THICKNESS
B-31W-100-075	1	3/4	1.38	0.065
B-31W-150-075	11/2	3/4	2.38	0.065
B-31W-150-100	11/2	1	2.38	0.065
B-31W-200-100	2	1	2.38	0.065
B-31W-200-150	2	11/2	2.38	0.065
B-31W-250-150	21/2	11/2	2.38	0.065
B-31W-250-200	21/2	2	2.38	0.065
B-31W-300-150	3	11/2	3.62	0.065
B-31W-300-200	3	2	3.62	0.065
B-31W-300-250	3	21/2	3.62	0.065
B-31W-400-150-B	4	11/2	5.25	0.065
B-31W-400-200	4	2	3.62	0.065
B-31W-400-250	4	21/2	3.62	0.065
B-31W-400-300	4	3	3.62	0.065
B-31W-400-300	4	3	3.62	0.065
B-31W-600-300-B	6	3	5.50	0.065
B-31W-600-400-B	6	4	5.50	0.065
B-31W-600-400-HW	6	4	9.00	0.065

316L Conical Reducers:

End Cap:

MODEL NUMBER	TUBE OD	WALL THICKNESS	A
G-2W-050	1/2	0.050	0.32
G-2W-075	3/4	0.050	0.31
G-2W-100	1	0.060	0.43
G-2W-150	1-1/2	0.060	0.56
G-2W-200	2	0.060	0.75
G-2W-250	2-1/2	0.060	0.70
G-2W-300	3	0.074	0.67
G-2W-400	4	0.074	0.48
G-2W-450	4-1/2	0.074	0.51
G-2W-600	6	0.074	0.88
G-2W-800	8	0.074	0.83

End Cap Reducers:

Ball Socket:

MODEL NUMBER	ID	TUBE OD	A	O-RING SIZE
BS-50/30	2.00	1-1/2	1.75	-
BS-50/30-G	2.00	1-1/2	1.75	2-224
BS-75/50	3.00	2	2.50	-
BS-75/50-G	3.00	2	2.50	2-232

180° Return Bend Elbow:

MODEL NUMBER	TUBE OD	WALL THICKNESS	A
G-2WU-050	1/2	0.049	0.75
G-2WU-075	3/4	0.035	1.00
G-2WU-100	1	0.065	1.50
G-2WU-150	1-1/2	0.065	2.25
G-2WU-200	2	0.065	3.00

45° Radius Elbow:

90° Radius Elbow:

90° Mitered Elbow:

Tee:

MODEL NUMBER	TUBE OD	WALL THICKNESS	A
G-7W-050	1/2	0.049	0.75
G-7W-075	3/4	0.035	1.00
G-7W-075HW	3/4	0.065	1.88
G-7W-075T	3/4	0.065	1.00
G-7W-100	1	0.065	1.88
G-7W-150	1-1/2	0.065	2.25
G-7W-150H	1-1/2	0.065	2.41
G-7W-200	2	0.065	3.00
G-7W-200H	2	0.065	2.61
G-7W-250	2-1/2	0.065	3.00
G-7W-250V	2-1/2	0.065	3.75
G-7W-300	3	0.065	3.25
G-7W-400	4	0.083	3.88
G-7W-400V	4	0.083	4.87
G-7W-500-B	5	0.083	4.25
G-7W-600-B	6	0.083	5.00
G-7W-600V-B	6	0.083	6.06
G-7W-800-B	8	0.120	7.00
G-7W-1000-B	10	0.120	9.50

Reducer Tee:

4-Way Cross:

MODEL NUMBER	TUBE OD	WALL THICKNESS	A
G-9W-050	1/2	0.049	0.75
G-9W-075	3/4	0.035	1.00
G-9W-100	1	0.065	1.88
G-9W-150	11/2	0.065	2.25
G-9W-150H	11/2	0.065	2.41
G-9W-200	2	0.065	3.00
G-9W-200H	2	0.065	2.61
G-9W-250	21/2	0.065	3.00
G-9W-250V	21/2	0.065	3.75
G-9W-300	3	0.065	3.25
G-9W-400	4	0.083	3.88
G-9W-400V	4	0.083	4.87
G-9W-500-B	5	0.083	4.25
G-9W-600-B	6	0.083	5.00
G-9W-600V-B	6	0.083	6.06
G-9W-800-B	8	0.120	7.00
G-9W-1000-B	10	0.120	9.50

5-Way Cross:

6-Way Cross:

Reducer Cross:

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