The Yoshitake CT-100 is a pneumatic control valve designed for versatile applications with steam, air, cold and hot water, oil, and other non-dangerous fluids. It features equal percentage flow characteristics with a 50:1 rangeability, ensuring precise control across a wide range of operating conditions. The valve is equipped with a stainless steel trim that provides excellent sealing, meeting ANSI Class IV seat leakage standards.

Built with a ductile cast iron (FCD450) body, the CT-100 is available in nominal sizes from 15A to 65A and supports working temperatures from -5°C to 250°C (no freezing). The pneumatic single-acting diaphragm actuator can be configured for either direct acting (normally open) or reverse acting (normally closed) operation, operating on an air pressure of 0.1-0.3MPa.

Features

1. Versatile application with equal percentage characteristics and 50:1 rangeability.
2. Stainless steel trim provides excellent sealing (ANSI Class IV seat leakage).
3. Easy to service.

Specifications

Specification	Detail
Model	CT-100
Nominal size	15-65A
Controlled fluid	Steam, air, cold and hot water, oil, other non-dangerous fluids
Driving fluid	Compressed air
Connection	JIS 10KRF/20KRF, EN PN16/25, ASMEclass150/300 flanged
Max. differential pressure	Standard type: 2.5MPa (15-32A), 1.0MPa (40-65A) High pressure type: 2.5MPa (15-65A)
Working temperature	-5 to 250°C (no freezing) *1
Valve characteristic	Equal percentage
Rangeability	50:1
Seal (valve and seat)	Metal to metal
Seat leakage	Cv x 0.01% or less (ANSI Class IV) *2
Actuator Type	Pneumatic single-acting diaphragm actuator
Action	Reverse Acting (normally closed) or Direct Acting (normally open)
Air pressure	0.1-0.3MPa *3
Ambient temperature	-20 to 60°C
Body Material	Ductile cast iron(FCD 450)
Valve/Seat Material	Stainless steel

INFO

*1 The body and bonnet are made of FCD450 ductile cast iron. When handling high-temperature fluids, ensure that the pressure—temperature ratings are not exceeded. *2 Refer to the Cv Value Table for the rated Cv values. *3 To ensure reliable full-stroke operation, supply the positioner (including the optional air regulator) with an air pressure of 0.4—0.7 Mpa.

Maximum Working Pressure

EN Flange

Flange	-5 to 120°C	150°C	200°C	250°C
PN16	1.60MPa	1.55MPa	1.47MPa	1.39MPa
PN25	2.50MPa	2.43MPa	2.30MPa	2.18MPa

ASME Flange

Flange	-5 to 120°C	150°C	200°C	250°C
Class 150	2.00MPa	1.95MPa	1.87MPa	1.79MPa
Class 300	2.50MPa	2.43MPa	2.30MPa	2.18MPa

JIS Flange

Flange	-5 to 120°C	150°C	200°C	250°C
10K	1.00MPa	0.97MPa	0.92MPa	0.87MPa
20K	2.00MPa	1.95MPa	1.87MPa	1.79MPa

Rated Cv Values

Pressure Rating	Max. Diff. Press.	15A	20A	25A	32A	40A	50A	65A
PN16 / JIS10KRF / ASME Class 150	1.0MPa	4.6	8.6	13.3	18.5	28.9	41.6	73.0
	1.6MPa (PN16) 2.0MPa (JIS/ASME)					24.8	36.2
PN25 / JIS20KRF / ASME Class 300	1.0MPa	4.6	8.6	13.3	18.5	28.9	41.6	73.0
	1.6MPa (PN25) 2.0MPa (JIS) 2.5MPa					24.8	36.2

Dimensions and Weights

No Accessories

With E/P Positioner and Air Regulator

With IP Positioner and Air Regulator

EN PN16/25 Flange Dimensions

Nominal Size	L	H	A	Stroke	Weight (No acc.)	Weight (E/P pos.)	Weight (Smart pos.)	Weight (IP pos.)
15A	130	464	290	25	19	23	24	22
20A	150	464	290	25	20	24	25	23
25A	160	464	290	25	21	25	26	24
32A	180	465	290	25	23	27	28	26
40A	200	468	290	25	25	29	30	28
50A	230	576	360	40	38	42	43	41
65A	290	621	360	40	53	57	58	56