Inline Brass Valves, Pneumatic, Socket Weld

General purpose high vacuum valve used with inert gases

Socket weld "Sweat" inlet and outlet

Double-acting air cylinder

Available with "Disc" or "O-ring" Poppet

Inline Valves, Brass, Pneumatic, Socket Weld, Viton® Seals

PART NUMBER	POPPET	PORT STYLE	A	B	C	D	E	F
BL-37-P	Disk	3/8" Socket	1.00	1.81	.62	3.50	7.62	.18
BL-37-P-O	O-Ring	3/8" Socket	1.00	1.81	.62	3.50	7.62	.18
BL-50-P	Disk	1/2" Socket	1.00	1.81	.62	3.50	7.62	.18
BL-50-P-O	O-Ring	1/2" Socket	1.00	1.81	.62	3.50	7.62	.18
BL-75-P	Disk	3/4" Socket	1.37	2.62	.84	4.43	8.62	.37
BL-75-P-O	O-Ring	3/4" Socket	1.37	2.62	.84	4.43	8.62	.37
BL-112-P	Disk	1-1/8" Socket	2.00	3.37	1.28	5.25	9.62	.37
BL-112-P-O	O-Ring	1-1/8" Socket	2.00	3.37	1.28	5.25	9.62	.37
BL-162-P	Disk	1-5/8" Socket	2.50	3.75	1.93	7.05	11.00	.37
BL-162-P-O	O-Ring	1-5/8" Socket	2.50	3.75	1.93	7.05	11.00	.37
BL-200-P	Disk	2" Socket	3.00	4.62	2.00	7.05	11.37	.50
BL-200-P-O	O-Ring	2" Socket	3.00	4.62	2.00	7.05	11.37	.50
BL-212-P	Disk	2-1/8" Socket	3.00	4.62	2.00	7.05	11.37	.50
BL-212-P-O	O-Ring	2-1/8" Socket	3.00	4.62	2.00	7.05	11.37	.50

Pneumatic Disk Bellow Assemblies

PART NUMBER	FITS VALVE SERIES
DB-2-50	37,50
DB-2-75	75
DB-2-112	112
DB-2-162	162
DB-2-200	200,212

Pneumatic Disk Replacement Seal Kits

PART NUMBER	FITS VALVE SERIES
OR-DB-2-50	37,50
OR-DB-2-75	75
OR-DB-2-112	112
OR-DB-2-162	162
OR-DB-2-200	200,212

Pneumatic O-Ring Bellow Assemblies

PART NUMBER	FITS VALVE SERIES
OB-2-50	37,50
OB-2-75	75
OB-2-112	112
OB-2-162	162
OB-2-200	200,212

Pneumatic O-Ring Replacement Kits

PART NUMBER	FITS VALVE SERIES
OR-OB-2-50	37,75
OR-OB-2-75	75
OR-OB-2-112	112
OR-OB-2-162	162
OR-OB-2-200	200,212

Valve Options

Add option code to suffix of valve part number.

DESCRIPTION	OPTION CODE
Reed Switches	-LS
Spring Loaded Air Cylinder	-S
24 Volt DC Solenoid	-24VDC
24 Volt AC Solenoid	-24VAC
220 Volt AC Solenoid	-220VAC
No Solenoid	-NS

Product information is subject to change without notice. Product images may include options or accessories not included with the base model.

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For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.

Key High Vacuum Products, Inc.

36 Southern Boulevard, Nesconset, NY 11767

1-631-360-3970