Fushiman T88 and T88R type temperature control valves

Manufacturer: Fushiman Co.,LTD.
Model: T88

Model	Nominal diameter	Pressure	Temperature setting	Body Material	Connection
T88	15–150	Max. 1.0MPa	15 to 120°C	FC	Flange (screw-in temperature sensor)

Main Specifications

Application and Model Name	For heating (65–150A): Model T88 For cooling (15–150A): Model T88K
Set Temperature Range	15〜120°C)
Nominal Diameter	15	20	25	32	40	50	65	80	100	125	150
Valve Type	Double seat (Direct action: for heating, Reverse action: for cooling)
Valve Seat Leakage	Less than 0.5% of the rated flow
Maximum Operating Pressure of Valve Body (MPa)	1.0					0.7		0.5		0.2
Valve Body Pipe Connection	JIS 10K full-face flange
Fluid Passing Through Valve	Steam (below 185°C), chilled/hot water (above 0°C)
Applicable Pressure for Thermal Bulb (MPa)	1.0 MPa (for liquid), atmospheric pressure (for gas)
Thermal Bulb Connection Standard	JIS tapered pipe thread
Capillary Tube Length	Standard length 3 m (up to 5 m maximum)

Note (1): When selecting a heating model with nominal diameter 15–50, please use the single-seat TL10H type (see page 150).
(2): For details on temperature setting categories, please refer to the next page.

Materials of Main Components

Part Name	Material
Valve Body	Cast Iron (*3)
Upper/Lower Cover	Nominal Dia. 15–40: Bronze, Brass Nominal Dia. 50–150: Cast Iron
Valve Plug	Stainless Steel
Valve Seat	Stainless Steel
Frame	Cast Iron
Bellows	Phosphor Bronze
Capillary Tube (CT)	Copper tube with stainless steel protective sheath
Thermal Bulb	Stainless Steel Tube (*4)

Note (3): Valve bodies can also be manufactured from cast steel or cast stainless steel (for heating: Model 888A, for cooling: Model 888R).
Note (4): For thermal bulbs used with liquids, versions with protective sleeves can also be manufactured.
Remark 1: Thermal bulb connection parts can also be manufactured in flange type.
2: If the thermal bulb is pressurized in gas applications, please specify accordingly.

Dimensions, Weight, and Cv Value

Category	15A	20A	25A	32A	40A	50A	65A	80A	100A	125A	150A
L (mm)	140	145	160	180	195	200	220	240	280	370	450
H₁ (mm)	73	73	78	86	98	113	118	138	151	178	208
H₂ (mm)	465	465	475	480	490	515	521	568	581	607	637
Head Outer Diameter (mm)	160	160	160	160	160	160	160	180	180	180	180
Weight (kg)	12	13	15	19	21	30	32	40	57	98	130
Cv Value	4	4	7	10	13	20	22	32	47	100	110

Standard Set Temperature Ranges

Type	Set Temperature Range	Temperature Resistance
Low Temperature	15°C or higher – 30°C or lower	45°C
	20°C or higher – 40°C or lower	50°C
	35°C or higher – 55°C or lower	70°C
Standard Temperature	40°C or higher – 60°C or lower	70°C
	50°C or higher – 70°C or lower	80°C
	60°C or higher – 80°C or lower	90°C
	70°C or higher – 90°C or lower	100°C
	80°C or higher – 100°C or lower	110°C
	90°C or higher – 110°C or lower	120°C
	100°C or higher – 120°C or lower	130°C

When the set temperature range is for low temperature use, the structure of the temperature control valve differs slightly from the illustration on the previous page.

Valve Opening/Closing Temperature Differential

Category	For Liquid		For Gas
Category	Standard Temp	Low Temp	Standard Temp	Low Temp
CT 3m	4.5°C or less	5°C or less	7.5°C or less	8°C or less

Nominal Diameter Selection (Example)

○Fluid: Saturated Steam
○Primary Side Pressure: 0.53 MPa
○Flow Rate: 300 kg/h
◎How to determine the appropriate valve nominal diameter when the allowable pressure drop is 0.1 MPa:
① Draw a horizontal line to the right from the saturation point at secondary side steam pressure: 0.43 MPa (0.53 − 0.1 MPa).
② Draw a vertical line upward from the point where it intersects with the 300 kg/h steam flow line.
③ Find the intersection with the 0.1 MPa allowable pressure drop line.
　↳ This falls between nominal diameters 20 and 25. Choose the larger one, so “nominal diameter 25” is considered appropriate.

Nominal Diameter Selection Chart