Automatic temperature control valveSR FR SS FS series

  • Bellows type automatic temperature control valve.
  • Mechanical type and does not require a power supply.

Used for heating heavy oil heater, heat exchanger, hot water tank or cooling hydraulic unit.And used in ships, air conditioning, chemical industry.

Fluid Water Steam
Temperature Max 180℃
Control Range (40℃-120℃ : +/-20%)
Pressure 0.2-0.7MPa
Size 1/2″ – 6″
Body BC6(SR SS),FC20(FR FS)
Manufacturer TAISEI KOGYO CO., LTD.
Origin Japan


Valve Specification

Model Connection Pressure
CV Value Weight
Size(inch) Type
SR 1/2 1/2 Rc 0.7 2  
SR 3/4 3/4 2  
SR 1 1 4  
SR 1 1/4 1 1/4 7  
SR 1 1/2 1 1/2 10  
FR 1/2 1/2 JIS 10K Flange 0.7 2  
FR 3/4 3/4 2  
FR 1 1 4  
FR 1 1/4 1 1/4 7  
FR 1 1/2 1 1/2 10  
FR 2 2 14  
FR 2 1/2 2 1/2 0.5 21  
FR 3 3 0.4 27  
FR 4 4 42  
FR 5 5 0.3 72  
FR 6 6 0.2 94  
SS 1/2 1/2 Rc 0.7 1  
SS 3/4 3/4 1  
SS 1 1 0.5 2  
FS 1/2 1/2 JIS 10K Flange 0.7 1  
FS 3/4 3/4 1  
FS 1 1 0.5 2  

Other Specifications・Options

Leak rate

Allowable leak rate of Automatic temperature control valve
When the valve is closed, the allowable leak amount is 0.5% or less of the cv value.

Capillary Capillary of Automatic temperature control valve
Length of Capillary valve size : 1/2″ – 3″ = 2m valve size : 4″ – 6″ = 3m *The maximum capillary length can be up to 10m.


What is a automatic temperature control valve

Frequently Asked Questions

Can I buy your product from my country?
It’s possible for us to sell every area all over the world. If there is direct-shop or our agency directly in your area, we let you know it.
What can I select for payment options?
You can choose either T/T or L/C.T/T is an abbreviation of “Telegraphic Transfer”. Please send money to our bank account. L/C is an abbreviation of “Letter Of Credit”. It’s the means of settlement for trading that should be pledged as a collateral between our company and your bank as payment promise.
Can I buy the valves of other company by you?
You can buy Japanese valve product of other manufactures. You can buy the valves for example, Solenoid valves, Air-operated valves, Motorized valves, Electric flow control valves, Constant flow valves, Check valves, Manual valves, And other Japanese valves we can select. We can’t sell you some product that we don’t have the stock or that we can’t select the spec for special-spec product, please accept it beforehand. (If you may select the model number by your own and we do not have to decide or select it, we can sell you the product.) We can sell you any valve product of Japanese manufacture.

What do you have shipping options?
Available for EMS and FedEX and other shipping companies with which we have been trading. Also available the options for airmail or surface mail depending on the quantity and weight of the package. If you want, you can choose delivery traders for shipping.
How long will it take for a shipping date?
If we have the stock, it will be delivered in 3 to 10 days by EMS. Order production will be delivered in 45 to 60 days depending on the quantity and weight of the products.

 International Sales

International Sales available | Waiting for Inquiry!

  • Keihin Co., Ltd.’s valve products (all products listed on the website or catalogue) can be purchased anywhere around the world from one pcs! (→Learn More)
  • Always feel free to ask us, based on your needs we will select and put forward the best valve product which suit your situation. (→Send inquiry of Quotation / Order now!)

    International Sales Division +81-45-453-1616  Hours: 8:50 A.M. to 5:40 P.M.


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