Tankless Instant Wall Mounted Water Heater JW-QS7

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 100 Pieces pc

Supply Capability:: 30000 Pieces per Month pc/month

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Detailed Product Description

1/ quality steel used for housing & case.

2/ copper heat exchanger

3/ with various safety device

Features:

Model: JW-QS7 Series

* quality steel used for housing & case.

* environment-friendly coating finish if any.

* pure copper heat exchanger

* sealed burner box for high heat efficiency

* low or zero water pressure start-up

* with various safety device

* various coating color for panel optional

Specification:

Model	JW-QS7-12	JW-QS7-16	JW-QS7-20	JW-QS7-24	JW-QS7-32	JW-QS7-40
Capacity (L)	6	8	10	12	16	20
Exhaust type	forced exhaust	forced exhaust	forced exhaust	forced exhaust	forced exhaust	forced exhaust
Burner type	3 line harmonica	4 line harmonica	13 line T-shape	15 line T-shape	16 line T-shape	18 line T-shape
Ignition	automatic	automatic	automatic	automatic	automatic	automatic
Applicable water pressure (MPa)	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8	0.02~0.8
Gas type	LPG(Liquefied Petroleum Gas) / NG(Natural gas)
Gas pressure	LPG: 2800Pa NG: 1274Pa & 2000Pa
Product size (mm)	440x290x120	520x320x140	590x330x140	620x330x180	650x420x180	700x420x180
Packing size (mm)	560x360x180	640x375x200	710x400x200	750x390x240	770x480x240	820x480x240
N.W. / G.W. (kg)	4/5	7/8	9/10.5	9.5/11	13.5/15.5	18/20

Our advantage:

1/ make products in factory ourselves.

2/ strong manufacturing capacity for OEM service.

3/ flexible production for tailor-made service to client.

Q:Grinding wheel for grinding hob: A plain white disc grinding wheel should be fine. Basically, the wheels are standard parts

Q:I produce high speed hob, M3, double headed, pressure angle 20 degrees, machined gear Z11 and Z9 gear. The normal line changes momentum 0.06~0.1 and does not dare to shave teeth. I analyze the reasons: long hob processing, less gear, gear inappropriate: in theory inappropriate. The machining tolerance is accumulated; the vibration is large; the accuracy of the hob; the accuracy of the gear hobbing machine. So far, I haven't solved it completely. But I told the gear factory to use the same hob to gear the Z43 gear, which is obviously much better. I hope you can correct me.: Scraping the general process, scraping hob hob - modulation ---- carbide hob scraping. The general amount of stay, such as M5, usually leaves about 0.4. However, alloy hob is more valuable. Scraping hob must have roots, otherwise easily jump alloy hob tooth. Just say that.

Q:Why is the front rake hob good for chip removal?: The rake angle of the front rake is lower than the front angle of the hob, but the inherent error is larger than the zero front angle, so the rough rolling force with low precision is often used

Q:M6-12 recommends the use of what their hob grinding, grinding wheel, a grinding method of hob can be good recommendation, currently with 60 of white corundum grinding wheel M12 hob grinding too slowly, a grinding wheel can grind a row of hob a tooth to wear 2-3 hours, but also easy to knife sub fire! Asks God to help solve!!!: Choose 60-70 purpose CBN grinding wheel. Instant coating is not too big a problem

Q:What is the number of hob head?: De=DH 2ms type, De-- worm gear, outer diameter DH--, worm throat diameter, ms-- modulus, mechanical design manual, find the outer diameter of about 190 mm

Q:What are the main causes of hob breaking?: (1) helical rolling wheel indexing hanging off, (Y38-1, Y3150) indexing hanging round off, the table does not turn, turn the cutter knife, broken teeth. The differential gear shedding (Y3150E, Y3180H) differential gear off the bench or turn. (2) head screw clearance large, in the processing process, the knife suddenly sank (inverse milling often), caused by the amount of feed is too large, not only from the sometimes broken tooth hob groove crack, the entire knife scrap (3) processing the material hardness is too high or too soft, also to the broken tooth cutter

Q:I have not heard of the operation of grinding hob, I would like to ask you, the friend knows, please explain, the more detailed the better, thank you for a friend here.: To use a special hob grinder, first open the power supply, install the hob, can not be used to open a nut tightly - hydraulic hob spindle extends to the hob and grinding wheel center line and then stop motion - wheel hob spindle will fall into the hob flute, to deep point, - Rotary hob, hob front the knife surface attached to the wheel surface, light, rake face and wheel plane is better - tighten the pressure of hob with nuts -- well, can the grinding hob.

Q:If a pair of conjugate gears have different coefficients, can the hob be used in general? The addendum of the tooth is required: If the basic parameters of the gear are the same (m * ha * C *), and the tip of the tooth has no trimming, the hob can be used in general. When the addendum of the gear tooth is required, it should be analyzed. If the coefficient of variation between the two coefficients is not large, and the margin of repair is not very strict, there is a general possibility. If the X difference is large, it can not be universal, there will be the top of the tooth repair margin is too small phenomenon. Even when x=0 is rolling with the same knife, the average number of rolls is less, and the gears are smaller at the time of repair, while the number of teeth rolled seems larger.

Q:Does the forum superiors in the gear hobbing process, because the workpiece in addition to generating motion, and an attachment movement for generating helical gear so I want to ask the question is to spur gear hob, turning a lead, the workpiece will rotate (360* / gear hob the number of degrees) for helical gear hob the same rotation of a lead, because of the additional movement of the workpiece, the workpiece rotation degree will be how much? PS: suppose the hob is the same as the gear rotation: Mainly according to the size of the spiral angle and material hardness, feed speed, this is not to say, high speed, feed volume is relatively small, more than 25 degrees or slow down a little better

Q:What does "hob" mean when cooking?: The name of the hob block, not food, and irregular lumps, as long as the eggplant, cut the eggplant, cut, turn, turn, is the hob block

With many years' experience in this field, we set up independent R & D center, testing centers, quality control centers inside factory ourselves. We carry out ISO9001 system in the company, all staffs constantly follow advanced managing & strict quality control process, quality-oriented is a constant guidance for our work here. We organize an experienced team in sales department, to ensure customers a prompt & efficient response, we are at customer's service anytime.

1. Manufacturer Overview
Location	Guangdong,China
Year Established	2008
Annual Output Value
Main Markets	South America Eastern Europe Mid East Eastern Asia South Asia
Company Certifications	ISO 9001:2000

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port	Shunde
Export Percentage
No.of Employees in Trade Department	3-5 People
Language Spoken:	English, Chinese
b)Factory Information
Factory Size:	1,000-3,000 square meters
No. of Production Lines	5
Contract Manufacturing	OEM Service Offered
Product Price Range