Clean Butterfly Valves

The BZD series valves feature a unique design where the disk and seat ring do not make contact when the valve is fully open that prevents seat deformation and excessive abrasion. The wetted area is polished and undergo an oil-free process to minimize particle accumulation.

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FEATURES

The valve body and the parts in the wetted area are a wafer-shaped industrial butterfly valve made of stainless steel. The parts in the wetted area are polished and undergo oil-free processing in order to minimize particle accumulation and adhesion.
Because the valves adopt a double eccentric structure in which the stem’s center of rotation deviates slightly from the disk seal surface as well as the center of the disk (pipe), there is no contact between the disk and seat ring when the valve is fully open, which prevents deformation of the seat and excessive abrasion to ensure a high level of sealing capability.
Giving more width to the disk and seat ring seal surfaces improves the sealing capability, and the valves can be operated with a small opening/closing torque because excess swaging is not necessary.
The seat material is durable PTFE. In addition, cracking, peeling, or excessive abrasion will not occur in the seat ring because it has a double eccentric structure with fully uniform seal contact pressure, appropriate swaging force, etc., forming a structure that will withstand long-term use.
Use of the gears in the actuation mechanism requires only small amount of force. It also takes up less footprint than conventional lever operated valves.
A pneumatic actuator can be mounted by using a bracket and connector.

WETTED AREA MATERIAL

SCS13A (SCS14A,SCS16A)*1

*1 SCS13A: equivalent to SUS304, SCS14A: SUS316L equivalent
SCS16A: SUS316L equivalent

PRECAUTIONS

The valves are used with reactive or corrosive gases, nor with any liquids.

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Product Details

Specifications
Size		50A	65A	80A	100A	125A	150A	200A	250A	300A	350A	400A
Cv	90° Open	83	175	255	460	722	1180	2240	3660	5640	7060	9390
	60° Open	54	112	164	295	462	756	1140	2350	3610	4520	6010
	45° Open	33	69	101	182	285	465	883	1450	2230	4520	3700
	30° Open	17	36	52	94	147	240	455	743	1150	1440	1910
Maximum Operating Pressure		142psig (0.98MPa(G))
Fluid Temperature		-10~80ºC
Atmospheric Temperature		-10ºC~60ºC
Fluid Used		Inert gas (Not compatible with active gas or corrosive gas.)
Cycle Life		10,000 cycles
Product Grade
Grade			STD
Material			SCS13A, SCS14A, SCS16A
Surface Roughness			≤ 150 A: ≤ Rz 6.0 µm					≤ 200 A: ≤ Rz 12.0 µm
			≤ Ra 1.6 μm / 63 μin					≤ Ra 3.2 μm / 126 μin
Cleaning			Degreasing + Precision cleaning
Packaging			Double bagged package

PRODUCT CODE KEY

Model	Size	Operation	Valve Shape		Conenction	Body Gasket Material	Seal Material		Custom Specifications		Grade + Body Material
BZD	50	M	S	-	RF	X	T	-	Technical number	-	STD-304
BZD- Clean Butterfly valve	50: 50A 65: 65A 80: 80A 100: 100A 125: 125A 150: 150A 200: 200A 250: 250A 300: 300A 350: 350A 400: 400A	M: Manual	S: Straight		RF: RF flange	X: Not provided (During RF)	T: PTFE		Blank: Standard Product		STD-304: 304-equivalent (SCS 13A) STD-316: 316-equivalent (SCS 14A) STD-316L: 316-equivalent (SCS 16A)