GB 5135.6-2018Automatic sprinkler systems - Part 6: Conventional valves (English PDF)

5.3 Automatic sprinkler system code, see

5.2 Example 1. ZSCFD1T-25-16 means. rated working pressure 1.6MPa, nominal diameter 25mm, copper alloy material, internal thread connection, electric drive automatic water spray Fire system fire solenoid valve. Example 2. ZSXDF7Q-100-16 means. rated working pressure 1.6MPa, nominal diameter 100mm, ductile iron material, clip connection, manual drive automatic water spray Fire extinguishing system fire signal butterfly valve. Example 3. ZSNF4Q-150-16 means. rated working pressure 1.6MPa, nominal diameter 150mm, ductile iron material, flange connection, manual drive automatic water spray Fire system fire check valve.

5.2 System Code The system code uses two uppercase Chinese Pinyin "ZS" to indicate the general purpose valve for the sprinkler system.

5.3 Product Name Code The product name code of the general valve is shown in Table 1. Table

1 Product Name Code product name Fire gate Fire Ball valve Butterfly valve Fire The electromagnetic valve Fire Shut-off valve Fire Signal gate valve Fire Signal butterfly valve Fire Signal ball valve Fire signal Shut-off valve Fire Check valve Fire Ground gate valve Code name ZF QF DF CF JZF XZF XDF XQF XJZF NF MZF

5.4 Drive mode code The driving method code of the general valve is shown in Table 2. Table 2 drive mode code Drive mode Power drive Electropneumatic hydraulic Manual Codename DQY omitted

5.5 Connection form code The connection form code of the universal valve inlet and outlet connection is shown in Table 3. Table 3 connection form code Connection Type Thread Internal thread Flange clamp Clamp (groove connection) card cover Code 1 2 4 7 8 9

5.6 Body material code The valve body material code of the general valve is shown in Table 4. Table 4 valve body material code Body material a Carbon steel ductile iron chrome-nickel stainless steel chrome-nickel-molybdenum stainless steel copper and copper alloy Codename CQPRT a Other materials should meet the requirements of the corresponding national standard material grade.

5.7 Specification Code The specification code for a universal valve is expressed as a nominal diameter in millimeters (mm).

5.8 rated working pressure code The rated working pressure code of the universal valve is multiplied by 10 in megapascals (MPa) according to the provisions of GB/T 1048. The resulting value is expressed.

6.1.1 Appearance and logo

6.1.1.1 The surface of the universal valve should be smooth and smooth, free of processing defects and scratches, uniform coating and beautiful color.

6.1.1.2 The valve body should be painted red.

6.1.1.3 The contents of the general valve sign shall comply with the provisions of 9.1.

6.1.2 Nominal size The nominal size of the import and export of general-purpose valves should not exceed 300mm, and should meet the requirements of GB/T 1047.

6.1.3 Rated working pressure The rated working pressure of the universal valve shall not be lower than

1.2 MPa and shall comply with the provisions of GB/T 1048.

6.1.4 Materials

6.1.4.1 The valve body and bonnet of the universal valve shall be made of materials with corrosion resistance not lower than ductile iron, and the corrosion resistance of the seat material Can be no less than bronze.

6.1.4.2 Parts required to rotate or slide in general-purpose valves shall be made of corrosion-resistant materials such as bronze, brass, nickel-copper alloy, etc. When the material with poor corrosion performance is manufactured, the bushing member made of the above corrosion-resistant material should be added at the relative movement.

6.1.5 Connection method

6.1.5.1 When the thread connection method is adopted, the connection size shall comply with the provisions of GB/T 7306.

6.1.5.2 When using flange connection, the flange connection size, flange sealing surface type and size shall comply with GB/T 9112 or The provisions of GB/T 17241.6.

6.1.5.3 When the groove connection method is adopted, the connection size shall comply with the provisions of GB 5135.11.

6.1.5.4 When using the clamp connection method, the connection size shall comply with the provisions of GB/T 12221.

6.1.5.5 When the ferrule connection method is adopted, the connection size shall comply with the provisions of GB/T 3737.

6.1.6 aging resistance of rigid non-metallic parts Rigid non-metallic parts shall be subjected to hot air aging and warm water aging tests in accordance with

7.5 and 7.6, and rigid non-metallic parts after test There should be no distortion, creep, cracks or other deformation damage that would interfere with the normal operation of the device.

6.1.7 Disc seals The valve disc seal shall be tested in accordance with the method specified in 7.7. The test results shall comply with

4.2.4 of GB/T 21873-2008. Requirements of 4.2.5.2, 4.2.6, 4.2.8.

6.1.8 Driver Requirements

6.1.8.1 General-purpose valves driven by electric, pneumatic or hydraulic means, the driving device shall ensure that the maximum differential pressure of the valve at the inlet and outlet is not exceeded. It can operate normally under its rated working pressure.

6.1.8.2 Test according to the provisions of 7.2.1, general-purpose valves driven by electric, pneumatic or hydraulic means shall be opened and flexible, drive device And the valve should not show any faults and structural damage. After the test, the sealing performance test shall be carried out, and there shall be no leakage at each seal of the valve.

6.2.1 Handwheel

6.2.1.1 Handwheels for the operation of sluice gate valves shall be of the "spoke and rim" type with not more than 6 spokes, closed in a clockwise direction. In the round There should be an obvious arrow indicating the direction of closure and the word "off", or the two-way arrow on and off and the word "on" and "off".

6.2.1.2 The hand wheel should be fixed to the valve stem with a lock nut.

6.2.1.3 The outer diameter of the hand wheel shall not be less than the size shown in Table 5.

6.2.2 Maximum operating torque The test shall be carried out in accordance with the provisions of 7.13. The input torque for the opening or closing of the fire gate valve shall not exceed the requirements of Table 6.

6.2.3 Mechanical strength After the valve stem, gate and yoke frame are tested in accordance with 7.12, the maximum operating torque value applied to the handwheel shall be In accordance with the provisions of Table 7, there should be no damage after the test. Table

5 The smallest outer diameter of the hand wheel is in millimeters Nominal diameter of the sluice gate valve 15, 20

6 Maximum operating torque value of fire gate valve Nominal diameter of the sluice gate valve Mm Maximum operating torque value N·m 15, 20

7 Mechanical strength torque value Valve nominal diameter Mm Mechanical strength torque value N·m

6.2.4 Body strength The test shall be carried out in accordance with the provisions of 7.8. The fire gate valve shall be capable of withstanding the hydrostatic pressure of 4 times the rated working pressure for 5 min. Fully open, the valve body should be free of leakage, deformation and damage after the test.

6.2.5 Sealing performance

6.2.5.1 When the test is carried out in accordance with the provisions of 7.9, the water inlet port shall be able to withstand 2 times the rated working pressure when the fire gate valve gate is in the closed position. The hydrostatic pressure of the force is maintained for 5 minutes, and there should be no leakage at each seal of the valve.

6.2.5.2 Test according to the provisions of 7.9, when the fire gate valve gate is in the open position, it should be able to withstand 2 times the rated working pressure of still water Press and hold for 5 minutes, there should be no leakage, permanent deformation and damage in the seals of the valve body.

6.2.6 Work cycle After the test according to the provisions of 7.2.1, no part of the pressure bearing parts of the valve shall be permanently deformed, and there shall be no visible leakage at the sealing part.

6.3.1 Handwheel and handle

6.3.1.1 The handwheel or handle is turned clockwise to close, and there should be a sign indicating the direction of the switch. The handwheel or handle should have a ball passage. The location of the sign.

6.3.1.2 When the fire ball valve with handle is in the fully open position, the handle should be parallel to the ball passage.

6.3.1.3 The handle or handwheel should be securely installed for easy removal or replacement.

6.3.1.4 Fire ball valves shall have full open and fully closed position limit devices.

6.3.2 Opening and closing force The opening and closing force test is carried out according to the method specified in 7.14. Under the condition that the pressure difference between the inlet and the outlet of the fire ball valve is the rated working pressure, The closing position operating force should not exceed 350N.

6.3.3 Strength requirements According to the provisions of 7.8, the fire ball valve should be able to withstand 4 times the rated working pressure, keep 5min, the fire ball valve should be full during the test Open, the fire ball valve should be free from leakage, deformation and damage during the test.

6.3.4 Sealing performance According to the provisions of 7.9, the fire ball valve inlet should be able to withstand 2 times the rated working pressure, keep 5min, the fire ball valve should be tested Closed, there should be no leakage at each sealing part of the fire ball valve during the test.

6.3.5 Work cycle Test according to the provisions of 7.2.1. When the pressure difference between the inlet and outlet of the fire ball valve is the rated working pressure, it should be opened and flexible.

6.4 Fire protection solenoid valve

6.4.1 Logo In addition to the markings specified in 9.1, fire-fighting solenoid valves shall also be marked with working voltage, current, and working environment temperature. On the valve body There are signs of obvious water flow direction.

6.4.2 Features According to the provisions of 7.3, the fire solenoid valve should be operated accurately and quickly.

6.4.3 Reliability Tested in accordance with the provisions of 7.4, fire-fighting solenoid valves should be accurate and flexible, and should not cause any malfunction or structural damage. After the test Meet the requirements of 6.4.5. Each cycle includes the process of opening and closing the solenoid valve. Test conditions and number of actions required.

a) 20 °C ± 5 ° C, the maximum working pressure, rated working voltage, 20,000 times;

b) After the maximum working temperature of 70 ° C, after 1 h, the rated working pressure, rated working voltage × (100 ± 15)% each 10 times;

c) After the minimum operating temperature of 4 ° C, for 1 h, the rated working pressure, rated working voltage × (100 ± 15)% each 10 times.

6.4.4 Strength requirements Tested in accordance with the provisions of 7.8, the anti-static anti-magnetic valve should be able to withstand 4 times the rated working pressure, keep 5min, the solenoid valve should be in the test In the open position, the valve body should be free of leakage, permanent deformation and damage during the test.

6.4.5 Sealing performance According to the provisions of 7.9, the fire electromagnetic valve inlet should be able to withstand 2 times the rated working pressure, keep 5min, fire electromagnetic in the test The valve is in the closed position and there should be no leakage at the solenoid valve outlet.

6.4.6 Insulation resistance According to the test of 7.19, the insulation resistance between the terminal of the fire-fighting solenoid valve and the outer casing should be greater than 2MOmega.

6.4.7 Working power supply According to the test of 7.20, the fire-fighting solenoid valve should be able to work normally at the rated working voltage × (100 ± 15)%.

6.5.1 Handwheel and handle

6.5.1.1 When connecting with the hand wheel or handle, the connection with the valve shaft should be firm and reliable.

6.5.1.2 Rotating the disc in a clockwise direction should be able to close.

6.5.1.3 The handwheel shall have a permanent indication of the direction of the closing arrow and the word "off", or the arrow in the direction of the switch and the word "on" or "off", or in hand The nut of the wheel is indicated by a sign below.

6.5.1.4 When the handle of the fire butterfly valve is fully open, the handle should be parallel to the channel axis and marked "on" on the handle or another label. "Off" direction.

6.5.2 Disc opening indication requirements

6.5.2.1 All fire butterfly valves shall have indicating means for indicating the position of the disc and retaining means for ensuring the disc in the fully open and fully closed positions.

6.5.2.2 The fire butterfly valve operated by the handle shall have locking devices with different opening degrees to ensure that the butterfly plate has more than three intermediate positions and can be adjusted. And locked.

6.5.3 Mechanical strength Test according to the provisions of 7.12, apply 890N force on the fire butterfly valve handwheel and handle, no damage after the test.

6.5.4 Hydraulic friction According to the provisions of 7.15, the pressure loss of the fire butterfly valve due to the hydraulic friction is not under the condition of a flow rate of

4.5 m/s. Should exceed 0.02MPa.

6.5.5 Work cycle Test according to the provisions of 7.2.1. When the pressure difference between the inlet and outlet of the fire butterfly valve is the rated working pressure, the normal working cycle shall be 5,000 times. Open and flexible without damage. Each cycle includes the process of closing the fire butterfly valve from closed to fully open.

6.5.6 Strength requirements According to the provisions of 7.8, the fire butterfly valve should be able to withstand 4 times the rated working pressure, keep 5min, the fire butterfly valve should be full during the test Open, the fire butterfly valve should be free from leakage, deformation and damage during the test.

6.5.7 Sealing performance According to the provisions of 7.9, the fire butterfly valve should be able to withstand 2 times the rated working pressure, keep 5min, the fire butterfly valve should be closed during the test Closed, there shall be no leakage at the seal of the fire butterfly valve during the test.

6.6.1 Handwheel

6.6.1.1 Handwheels for the operation of fire-extinguishing valves shall be of the "spoke and rim" type with not more than 6 spokes, clockwise being closed. In the round The edge should be clearly marked with the arrow indicating "off" and the word "off", or the two-way arrow on and off and the word "on" and "off".

6.6.1.2 Handwheel application lock nut is fixed on the valve stem.