SBB Bellows Valves

The SBB series valves are a compact designed bellows valves for pipe connections. The high Cv and durability are excellent for use in higher flow supply lines.

View Digital Catalog

FEATURES

We offer not only all purpose butt weld connection but also flange connections and union connections.
Achieving reduced weight with forged valve body.
Adopted a seat structure to reduce gas pooling and particle shedding.
By setting the air supply inlet on the top of the actuator, there is no concern over piping direction.
Purge port options available for the Inlet, Outlet, or Both.

WETTED AREA MATERIAL

SUS316L

PRECAUTIONS

SBB series may experience shortened bellows life cycle under certain corrosive environment. Also, SBB series is not compatible with liquid use.
These valves are designed to be used under atmospheric pressure. Usage such as under vacuum vessels is not guaranteed.

Product Selection

JUMP TO: Specifications Product Grade Product Code Key Product Selection

Product Details

Specifications
Size		SBB10 (10A)	SBB15 (15A)	SBB20 (20A)	SBB25 (25A)
Cv		2.1	3.3	4.5	8.0
Wetted Area Volume		2.319in³ (38cm³)	3.234in³ (53cm³)	5.248in³ (86cm³)	3.726in³ (143cm³)
		Butt weld, OPEN state
Maximum Operating Pressure		142psig (0.98MPa(G))
Fluid Temperature	Manual	-10~100ºC
	Pneumatic	-	-10~80ºC
Atmospheric Temperature		-10ºC~60ºC
Leak Rates	Across the Seat He Leak Rates	≤ 1×10^-9sccs (≤ 1×10^-10 Pa·m³/sec)
	Inboard He Leak Rates	≤ 1×10^-9sccs (≤ 1×10^-10 Pa·m³/sec)
Actuation Pressure		-	N・C：72~101psig (0.5~0.7MPa(G))/N・O：72~87psig (0.5~0.6MPa(G))
Cycle Life*	Manual	100,000 cycles			50,000 cycles
	Pneumatic	-	10,000 cycles
* Test Condition / Seat material : PCTFE Gas : N2 Pressure : 0.98MPa
Product Grade
Grade		STD		EP
Material		SUS316L
Surface Roughness	Only Body’s Internal Surface	≤ Rz 3.2 µm		≤ Rz 0.7 µm
		≤ Ra 0.5 μm / 20 μin		≤ Ra 0.13 μm / 5 μin
		No bead cut in wetted area
Cleaning		Degreasing + Precision cleaning
Packaging		Single bagged package		Double bagged package

PRODUCT CODE KEY

Model	Size	Operation	Valve Shape		Connection	Bonnet Gasket Material	Disk Material		Purge Port		Grade + Body Material
SBB	15	M	S	-	W	C	T	-	IP	-	EP-316L
SBB- type bellows seal valve	10:10A 15:15A 20:20A 25:25A	M: Manual C: Normally closed O: Normally open*2	S: Straight		W: Butt weld U: Union*1 RF: RF flange	C: PCTFE	T: PTFE		Not Displayed: No purge port IP: 1st OP: 2nd PP: Both		STD-316L: Mechanical Polished + SUS316L EP-316L: Electro Polished + SUS316L

*1 The union type consists of interlock and butt weld types.
Please ask to the sales representative about handle color.
*Inch size butt weld also available.
*2 Normally open: 25A are available