IHARA CVB & CVF Series Bellows Valve

Product Made in Japan
Manufacturer:  IHARA SCIENCE CORPORATION
Model: CVB & CVF Series

Standard Material

Part nameMaterial
Body316L SS
Bellows316L SS
DiskPTFE or PCTFE *1 *3
Disk holder316L SS
Bellows flange316L SS
Bonnet304 SS
Bonnet gasketPCTFE *3
Pipe316L SS
HandleAluminum

Test inspection

  • Pressure proof test 1.5 MPa
    Sealing and valve seat leak test 1.1 MPa
    Leak test (vacuum method) External: 5.05 x 10^-10 Pa·m^3/sec or less Valve seat: 1.00 x 10^-6 Pa·m^3/sec or less *2*
    (*1) PTFE is the standard for the disk material. PCTFE can be specified.
    (*2) 5.05 x 10^-10 Pa·m^3/sec or less for PCTFE.
    (*3) Can be made with the polyimide material.

Specification

SizeOperating pressure (MPa)Operating temperature (°C)CV valueApproximate weight (kg)*
10AVAC to 1-10 to 80 (200) *31.71.3
15 A3.01.5
20 A51.7
25 A82.3
32 A226.1
40 A256.2
50 A299.8

CVB & CVF Series

Dimensions

Connection Diagram

Measurement Table

Pipe end

ModelSizeDtLL1HhWSF
CVB-10PW510 A17.31.2200551042463430
CVB-15PW515 A21.71.65200551042463430
CVB-20PW520 A27.21.65200501132863535
CVB-25PW525 A34.01.65210501263380640
CVB-32PW532 A42.71.6526557.5203501001356
CVB-40PW540 A48.61.6527060203501001356
CVF-50PW550 A60.51.652775224416016

Flange

ModelSizedDgLCTn-hfHhWSF
CVB-10FJ10 A14.9904610865124-1511042463430
CVB-15FJ15 A24.9955110870124-1511042463430
CVB-20FJ20 A281005611775144-1511132863535
CVB-25FJ25 A351256712790144-1911263380640
CVB-32FJ32 A4313576165100164-192203501001356
CVB-40FJ40 A4914081165105164-192203501001356
CVF-50FJ50 A60.515596230120164-19224416016

Union connection (Butt weld)

ModelSizeDt(L)L2L3(L4)HhWSF
CVB-10UN10 A17.31.21749035301042463430
CVB-15UN15 A21.71.6518410035301042463430
CVB-20UN20 A27.21.6522211039441132863535
CVB-25UN25 A34.01.6525311057521263380640

Union connection (Socket weld)

ModelSizeD1(L)L2L3L4HhWSF
CVB-10UW10 A21.51789030301042463430
CVB-15UW15 A2717010035151042463430
CVB-20UW20 A32.518011035151132863535
CVB-25UW25 A4119011035151263380640

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