Tankless Instant Wall Mounted Water Heater JW-QS7

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100 Pieces pc
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30000 Pieces per Month pc/month

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Product Description:

Detailed Product Description

1/ quality steel used for housing & case.

2/ copper heat exchanger

3/ with various safety device



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



Capacity (L)6810121620
Exhaust typeforced exhaustforced exhaustforced exhaustforced exhaustforced exhaustforced exhaust
Burner type3 line   harmonica4 line   harmonica13 line                 T-shape15 line                     T-shape16 line                     T-shape18 line                       T-shape
Applicable water pressure (MPa)0.02~0.80.02~0.80.02~0.80.02~0.80.02~0.80.02~0.8
Gas typeLPG(Liquefied Petroleum Gas)   /     NG(Natural gas)
Gas pressureLPG: 2800Pa                                    NG: 1274Pa     &     2000Pa
Product size (mm)440x290x120520x320x140590x330x140620x330x180650x420x180700x420x180
Packing size (mm)560x360x180640x375x200710x400x200 750x390x240 770x480x240 820x480x240 
N.W. / G.W. (kg)4/57/89/10.59.5/1113.5/15.518/20


Our advantage:

1/ make products in factory ourselves.

2/ strong manufacturing capacity for OEM service.

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

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Q:What do you think about the cutting hob?
Hob used for cutting, cutting out the shape of different blocks, similar volume, mainly used for Pier dishes to increase the shape of sensory effects, home braised beef / braised meat and other auxiliary materials, generally use this knife workCut hob basic attention is: cut a knife, rotating material 30-45 degrees, so that the cut out of different shapes, similar volume, to match the main ingredients
Q:What is the number of hob head?
The number or number of teeth in the same law
Q:Gear hob surface and shaft surface shape parameter is how to return a responsibility?
To answer the first question of cross-section of a thread, is the shape and size of the axial section profile shaft open when the bus is also in this section marked normal profile refers to open along with the thread section perpendicular to the direction of the normal section size is in the size of this section for the second the problem, really is a little big, clear need space more, therefore, suggest that you download a book at the Forum (gear cutter design) the book look, on page 35 is down
Q:Gleason hob material marked as: G30 what material?
Tool design post ASP 2030 is closer to S590
Q:Hobbing machine hob installation angle is wrong, what will happen?Go to work in the middle of the hob stopped, and then use the manual to hob vertical movement, and then start the workpiece and why card and the card hob is bad? And the consequences?
The general accuracy, generally a twice fine, roll into half in the dynamic angle (angle between the roll angle transform, gear hob axis and a position transform) cutter and gear blank is not the tooth socket overlap, serious breakage, the workpiece is not serious waste.
Q:Din 5480 8j precision involute spline with what grade of hob processing?
Using DIN 5480 8j spline hob precision machining of involute spline, spline hob processing made available but the bottom diameter (darker than DIN 5480, hob) my previous company production of planetary reducer and excavator, frequent contact
Q:How about the front edge, the normal and the normal tooth shape of the hob with rake angle?
To design hob, first of all, the tooth profile of the reference rack is required, and other related teeth are obtained according to the different structure of the hob. If the hob is a bevel, zero, or rake angle, the reference rack tooth profile can be used as the normal profile of the cutter. If the hob is the straight groove zero front angle, the above reference rack tooth profile shall be converted to the axial profile of the cutter. If the hob is straight groove with positive rake angle, it should be in front of the tooth or the axial profile of basic rack tooth profile conversion to the knife, which is who, detection technology, and the dielectric depends on the designer tool depth and a site. If the hob is a bevel, zero, or front angle, the above reference rack profile shall be converted to the front tooth profile of the knife. While the original basic rack tooth profile and linear tooth shape (involute curve tooth (workpiece) and processing of non involute workpiece) two, the landlord asked not clear answer, ask you to give an example, test analysis.
Q:What is the "hob" knife?
Ordinary cylindrical things use thisFor example, use cucumberFirst, at the end of a knife after the material roll chamfer an angle in a way called the beveled knife roller blade.Sorry, I can only find this one
Q:Tool presetting method in hob grinding
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:Known gear hobbing machine speed, knife, and hob modulus, the number of teeth of the workpiece, the processing thickness (Chi Kuan), how to calculate the processing hours?
A knife or two knives, stroke shaft speed to the number (small feed rate can be slower), how much processing height, very good ah!
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  
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