Ductile iron valve ,gate valve

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 100 PCS

Supply Capability:: 1000 PCS/month

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Specifications

Ductile iron gate valve
1.high quality made in China
2.Factory directly supply
3.Competitive price

gate valve product description:

1.gate valve product material list:

1 Body :Ductile Iron

2 Bonnet :Ductile Iron

3 Seal Retainer :NBR

4 Gate :Ductile Iron (EPDM Encapsulated)
5 Spindle :Stainless Steel

6 Spindle Cap :Ductile Iron

7 Thrust Washer :brass
8 Body Gasket :NBR /EPDM

9 Bonnet Gasket :EPDM

Additional content

elastic sealing flange coupling type valve(design)according to DIN3352-F4
face to face length according to DIN3202-F4 or ISO 5752 14 Series
flanged drilled (end flange)according to DIN2532/2533 or BS EN 1092
valve body and valve cover of ductile cast iron
wedge disc of ductile cast iron with EPDM(or NBR )
stem of stainless steel(2cr13),thrust bearing of copper
shaft sealing of NBR O-rings
coated with epoxy(inside and outside electrostatic spraying with epoxy)with handwheel.

2.Gate valve features:

1) The check valves supplied are mainly used for preventing the water and steam medium from flowing backward

2) Material:

a) Valve body and bonnet: ductile iron ASTM-A-536, GGG500-7

b) Disc: grey iron/ bronze, grey iron or grey iron/ rubber

3) Size: 50 - 600mm/ 2" - 24"

4) Pressure grade:PN10/PN16

5) Coating

a) Fusion-bonded epoxy 200-250 microns inside and outside .

b) Coating as per customers' requirement

3. Gate valve sample for free: you should pay for the freight charge for the samples

4. Gate vakve payment term:

a)30% TT upon placing order and 70% TT when the goods are finished but before shipment or the payment can be 50% upon placing order,and balance 50%upon Copy B/L,.

b) L/C or D/P

Q: For example, the knife gate valve, PZ73X-10C, DN50 torque is 5, torque is what role? What units?: The opening moment (torque) is the force or torque that must be applied when the valve is opened or closed. Need to open and close the valve when the sealing pressure than the formation of closed and valve seat sealing surface between the two, but also to overcome between the stem and the packing between screw stem and the nut, the valve stem friction end bearing and other friction parts. Therefore, certain closing force and closing torque must be applied, and the required opening and closing force and opening and closing torque during the valve opening process are varied, in which the maximum value is at the closing instant or the initial opening moment. Design and manufacture of valves, should strive to reduce the opening and closing force and opening and closing torque.The open torque can be obtained by means of calculation or measurement, and can be obtained by hand torque measurement.

Q: What does the J41Y-100I valve type mean?: J41Y-100I flange type chrome molybdenum steel valve forgingJ represents the cut-off valve, 4 (flange) on behalf of his connections, 1 (straight) on behalf of his structure, Y (seal) on behalf of his seat sealing surface or liner material code, 100 is the nominal pressure value, I (chrome molybdenum steel) is the code of the body material

Q: What are the advantages and disadvantages of this method? Are there any other ways to adjust the flow rate?: This is the most widely used method of regulating flow, while protecting pumps and motors. The general classical installation method is as follows: the pump outlet is equipped with a vibration reduction joint, and then a gate valve control switch, and then install a multi-function water pump valve to adjust the flow.

Q: What does the "Z45T-16" valve mean?: Z - gate valve4 - flange connection5 - Dark pole, stem non lifting (gate valve structure)T - copper alloy, valve sealing face code16 - pressure code, 1.6MPaMaterial code for grey cast iron valves of nominal pressure less than or equal to PN16 shall be omitted in model preparation.May refer to JB/T 308 valve model compilation method

Q: HH valve company in the United Kingdom, how about the valve?: Our factory boiler has this brand of valve, used for many years, has been no problem, really good.

Q: The total valve of my natural gas was closed by the attitude I tried. Now I can't open it. I need to use gas. Who knows how to drive it? What skills do I have? I'm talking about the main valve.: First of all, you have to determine the direction of the valve opening, usually homeopathy, it is off, the reverse is open. First: to determine the opening of the valve, are generally ball valve, screw 90 degrees on it. Second. At the top of your house, there is a button that can be pulled out. It's different from place to place. Some are pulled out half, and some are pulled out. Third: in the following there is a black disk like thing, commonly known as the gas sound core. This is the same as the second, pull out half or all, so that you can use gas, ha ha!

Q: Representation of several types of valves: Valve type:Z gate valveJ stop valveL throttling valveQ ball valveD butterfly valveH check valve and bottom valveG diaphragm valveA safety valveT regulating valveX plug valveY pressure reducing valveS trapDZ solenoid valveO electromagnetic motionDrive mode:1. electromagnetic and hydraulic action2., electricity, a liquid3. worm gear4. the spur gear rotates5. bevel gear rotation6. pneumatic7. fluid movement8. air and one liquid movement9. electricOther hand wheel, handle, board hand, no performanceSide mode;1. internal thread2. external thread3. flanges (for double spring relief valves)4. flanges5. flanges (for lever type, safety door, single spring safety door)6. welding7. pairs of clips8. clamps9. card sleeveIllustrated cover or lining:T copper alloyH alloy steelB tin based shaft (bearing alloy)Y cemented carbideX rubberJ hard rubberSA PTFESB poly three fluoro ethyleneSC polyvinyl fluorideSD phenolic plasticsSN nylon

Q: What are the key valve enterprises in China? Mainly in those areas?: Chinese valve is mainly produced in Zhejiang, where Wenzhou, Shanghai there are a lot of Zhejiang valve in Wenzhou, but also Shanghai valve production, many are also Zhejiang boss, the key depends on whether you need what valve valve, the valve may be located in different regions is not the same

Q: How to carry out the valve strength test and air tightness test?: Refer to the GB/T13927 or ISO5208 standards and need to pass it to you

Q: How can the material be checked by valve approach? What experiments do you need?: First of all, to check material certification, and secondly, the material appearance, shape and size of the initial test, again on the alloy material according to the standard spectrum analysis, the valve to do pressure test.

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