Fushiman BW5 type pressure reducing temperature control valve

Manufacturer: Fushiman Co.,LTD.
Model: BW5

Model	Nominal diameter	Inlet Pressure	Set pressure	Temperature setting	Body Material	Connection
The photo shows the BW5 main valve.	15–150	Max. 1.0 MPa	0.03 to 0.9 MPa	10 to 110°C	FC	Flange (screw-in temperature sensor)

BW5

The BW5 model consists of a P260 type pressure reducing main valve, a TL10H type temperature regulating pilot valve, and a Y-type strainer.

Application

For Heating

Set Temperature Range

15 to 120°C (For details, refer to the next page)

Nominal Diameter

100

125

150

Valve Type

Main Valve

Pilot-operated, Single Seat

Pilot Valve

TL10H type (single seat), nominal diameter 15

Valve Seat Leakage

Less than 0.1% of the main valve rated flow

Operating Pressure (MPa)

Main Valve Inlet Side

0.1 to 1.0 MPa

Main Valve Outlet Side

0.03–0.2, 0.1–0.8, 0.5–0.9 MPa

Pipe Connection (Main Valve)

JIS 10K full-face flange

Fluid Through Valve

Steam (220°C or below)

Heated Fluid

Liquid

Applicable Pressure for Thermal Bulb (MPa)

1.0

Thermal Bulb Connection Standard

JIS Taper Pipe Thread

Capillary Tube Length

Standard length: 3 m (up to 5 m maximum)

Note (1): When using the BW5 temperature regulating valve, the steam pressure must satisfy the following conditions:
(a) The secondary pressure must be 90% or less of the primary pressure and at least 0.03 MPa.
(b) The pressure reduction ratio between the primary and secondary pressures must be 20:1 or lower.
(c) The difference between the primary and secondary pressures must be at least 0.07 MPa.

Main Component Materials of the Main Valve (Pressure Reducing Valve)

Part Name	Material
Valve Body & Cover	Cast Iron (*2)
Valve Plug & Seat	Stainless Steel
Piston & Cylinder	Stainless Steel

Note (*2): For nominal diameters 15–40, the valve body is made of ductile cast iron.

Materials of the Strainer for Pilot Valve

Part Name	Material
Body	Ductile Cast Iron
Cover	Forged Brass
Screen	Perforated Stainless Steel Plate

●For the materials of the pilot valve (TL10H type), please refer to page 150.

Main Valve Dimensions and Weight

Item	15A	20A	25A	32A	40A	50A	65A	80A	100A	125A	150A
L	145	150	160	175	190	210	235	265	310	360	400
H₁	81	76	74	79	85	95	112	123	150	174	202
H₂	171	176	178	188	198	212	231	248	305	337	367
H₃	196	201	203	213	223	237	256	273	320	352	382
K	115	115	115	111	111	111	111	111	162	162	162
A	46	46	46	45	50	50	50	50	58	58	58
Weight (kg)	8	8.5	10	12	14	18	26	32	51	71	105

Note: For the dimensions of the pilot valve (TL10H type) and the thermal bulb, please refer to page 150.

Standard Set Temperature Ranges

Type	Set Temperature Range	Temperature Resistance
Low Temp Use	10°C or higher to 70°C max	Set temperature +10°C
Standard Use	50°C or higher to 110°C max	Set temperature +15°C (*3)

Note (*3): The upper limit temperature is 120°C.

Nominal Diameter Selection Chart

(Example) Specifications:
Primary Pressure: 0.5 MPa
Set Pressure: 0.25 MPa
Saturated Steam: 700 kg/h

First, draw a vertical line downward from the intersection of the primary pressure (0.5 MPa) and the set pressure (0.25 MPa), and find the point where it intersects with the 700 kg/h flow rate line. This point falls between nominal diameters 40 and 50.
In this case, the larger size — nominal diameter 50 — is appropriate.