Yoshitake AF-7 Instruction Manual Download Page 6

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7.  Installation

7.1 Example of piping

Figure 3 Figure of piping example (for steam)

7.2  Warnings and cautions for product installation

Warnings

(1) This product is very heavy. Use a suspension or other device to support it securely at

installation.

The falling of the product may result in injuries.

(2)  Attach an exhaust pipe onto the outlet so that the fluid is led to a safe place at discharge.

Be aware of scalding and other injuries at discharge.

Cautions

(1)  Cleanse the inside of the pipe thoroughly and remove any dust or scales before installing the

product.

Remaining dust from insufficient cleansing may obstruct proper operation of the product.

(2)  Remove the caps on the inlet and outlet of the product before installation.
(3) Match the fluid flow direction with the inlet and outlet of the product to ensure proper

installation.

The product will not function if installed improperly.

(4)  Please make sure that the product is installed in the proper direction.

The product will not function if installed in an improper direction.

(5)  Securely support and fasten the piping.

Excess stress on the piping will cause deformation, obstructing proper opening and closing of

the valve.

(6)  Do not remove the seal

  from the product.

(7)  Upon installation, please choose a place with sufficient space for removal of the product.

Insufficient space will obstruct exchange and other necessary work on the product.

(8)  If the product is installed in a place where the fluid discharge may trigger the alarm or soil

other equipment, extend the exhaust pipe to the outside of the building.

Lack of consideration for the location of the exhaust pipe end can result in soiling of other

equipment.

(9)  Please ensure that the piping connections are secure.

Improper connections can result in leaking from the joints with vibrations, and scalding from

the fluid.

(10) Since the fluid leaks from model AF-7 upon operation, please take measures to prevent

soiling of other equipment.

Summary of Contents for AF-7

Page 1: ...essure vessel structure specifications Boiler structure specifications 4 6 2 For Air Pressure vessel structure specifications 4 7 I n s t al la t i on 7 1 Example of piping 5 7 2 Warnings and cautions...

Page 2: ...ange JIS B 2238 Size mm 25 40 50 65 80 100 Body Carbon steel casting Material Valve valve seat Stainless steel 1 A safety valve which is so constructed that a part of the fluid blown off from the valv...

Page 3: ...mm AF 7 AF 7M Weight kg 25 25 32 16 200 9 4 0 100 85 226 231 10 40 40 50 25 490 6 6 3 120 110 273 270 20 50 50 65 32 803 8 8 0 135 120 325 321 25 65 65 80 40 1256 0 10 0 160 125 366 361 40 80 80 100 5...

Page 4: ...re 2 Structure No Name of parts No Name of parts 1 Body 14 Nut 2 Valve seat 15 Spring 3 Drain plug R3 8 16 Spindle 4 Seat ring 17 Spring chamber 7 Valve 19 Lever on Model AF 7 10 Valve holder 26 Name...

Page 5: ...ssure from the fluid coming in from the back of the valve holder back pressure adds to the pressure for the valve to close 6 Size selection tables 6 1 For steam Saturation temperature Pressure vessel...

Page 6: ...stalled improperly 4 Please make sure that the product is installed in the proper direction The product will not function if installed in an improper direction 5 Securely support and fasten the piping...

Page 7: ...f the safety valve does not affect the safety valve Installation of the flange on the safety valve inlet 1 As the valve seat is screwed on to the flange inlet there is a difference in level on the fla...

Page 8: ...be used on devices and equipment that vibrate considerably Leakage at the outlet side There is back pressure on the piping at the outlet side Review and change the piping layout Specifications of the...

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