China OEM Economical CZPT Casting Cross Tee for UPVC/CPVC Pipes Good Price near me manufacturer

Product Description

PVC Pipe Fittings For Water Supply/Agricultural Irrigation/ Drainage/threading Pipes

Product Introduction

PVC water supply piping fittings are general terms for opening, closing and regulating devices installed on pipelines and equipment. Generally divided into 2 categories: water distribution accessories and control accessories. Water distribution accessories, such as various faucets installed in sanitary appliances and water points, are used to regulate and distribute water flow. Control accessories are used to adjust water volume, water pressure, determine water flow, and change water flow direction, such as gate valves, check valves, and float valves.

Main Features

1. Strong corrosion resistance

2. High mechanical strength 

3. Environmental protection and no pollution

4. Good water tightness

5. Resistance to acid and alkali  

6. Complete specifications  

Product Specification

Products 45° Elbow 90° Elbow Pipe Cap Pipe Socket  Pipe Clamp Union Emergency Maintenance Joint
SIZE Φ20 Φ20 Φ20 Φ20 Φ20 Φ20 Φ110
Φ25 Φ25 Φ25 Φ25 Φ25 Φ25 Φ160
Φ32 Φ32 Φ32 Φ32 Φ32 Φ32 Φ200
Φ40 Φ40 Φ40 Φ40 Φ40 Φ40 Φ225
Φ50 Φ50 Φ50 Φ50 Φ50 Φ50 Φ250
Φ63 Φ63 Φ63 Φ63 Φ63 Φ63  
Φ75 Φ75 Φ75 Φ75 Φ75 Φ75  
Φ90 Φ90 Φ90 Φ90 Φ90 Φ90  
Φ110 Φ110 Φ110 Φ110   Φ110  
Φ125 Φ125 Φ125 Φ125      
Φ140 Φ140 Φ140 Φ140      
Φ160 Φ160 Φ160 Φ160      
Φ180 Φ180 Φ180 Φ180      
Φ200 Φ200 Φ200 Φ200      
Φ225 Φ225 Φ225 Φ225      
Φ250 Φ250 Φ250 Φ250      
Φ280 Φ280 Φ280 Φ280      
Φ315 Φ315 Φ315 Φ315      
Φ355 Φ355 Φ355 Φ355      
Φ400 Φ400 Φ400 Φ400      


Products Reducer Fitting Reducing Tee Tee
SIZE Φ25×20 Φ90×75 Φ225×125 Φ25×20 Φ110×50 Φ225×110 Φ20
Φ32×20 Φ110×50 Φ225×160 Φ32×20 Φ110×63 Φ225×125 Φ25
Φ32×25 Φ110×63 Φ225×200 Φ32×25 Φ110×75 Φ225×160 Φ32
Φ40×20 Φ110×75 Φ250×110 Φ40×20 Φ110×90 Φ225×200 Φ40
Φ40×25 Φ110×90 Φ250×160 Φ40×25 Φ125×75 Φ250×110 Φ50
Φ40×32 Φ125×63 Φ250×200 Φ40×32 Φ125×90 Φ250×125 Φ63
Φ50×20 Φ125×75 Φ280×250 Φ50×20 Φ125×110 Φ250×160 Φ75
Φ50×25 Φ125×90 Φ315×110 Φ50×25 Φ140×63 Φ250×200 Φ90
Φ50×32 Φ125×110 Φ315×125 Φ50×32 Φ140×75 Φ280×250 Φ110
Φ50×40 Φ140×90 Φ315×160 Φ50×40 Φ140×90 Φ315×110 Φ125
Φ63×20 Φ140×110 Φ315×200 Φ63×20 Φ140×110 Φ315×125 Φ140
Φ63×25 Φ160×75 Φ315×225 Φ63×25 Φ160×63 Φ315×160 Φ160
Φ63×32 Φ160×90 Φ315×250 Φ63×32 Φ160×75 Φ315×200 Φ180
Φ63×40 Φ160×110 Φ355×200 Φ63×40 Φ160×90 Φ315×250 Φ200
Φ63×50 Φ160×125 Φ355×250 Φ63×50 Φ160×110 Φ355×110 Φ225
Φ75×32 Φ160×140 Φ355×315 Φ75×32 Φ160×125 Φ355×200 Φ250
Φ75×40 Φ180×160 Φ400×200 Φ75×40 Φ160×140 Φ355×250 Φ280
Φ75×50 Φ200×110 Φ400×250 Φ75×50 Φ180×160 Φ355×315 Φ315
Φ75×63 Φ200×125 Φ400×315 Φ75×63 Φ200×75 Φ400×160 Φ355
Φ90×40 Φ200×140 Φ400×355 Φ90×50 Φ200×90 Φ400×200 Φ400
Φ90×50 Φ200×160   Φ90×63 Φ200×110 Φ400×250  
Φ90×63 Φ225×110   Φ90×75 Φ200×160 Φ400×315  


1. Water distribution engineering: including indoor water supply and outdoor municipal water pipe.  

2. Water-saving irrigation pipe distribution project.  

3. Piping engineering for construction.  

4. UPVC plastic pipe has excellent insulation ability, and is widely used as conduit of post and telecommunications cable.  

5. UPVC plastic pipe acid and alkali resistance, corrosion resistance, many chemical plants used for infusion pipe.  

6. Used for well sinking engineering, pharmaceutical piping engineering, mineral brine transportation piping engineering, electrical piping engineering, etc.  

Factory Introduction

Our factory was established in 2000, specializing in PVC, PE, PPR series pipe and pipe fitting products research, production and sales, and has introduced the most advanced production and testing equipment from Germany, Japan, Greece and other countries.  Adopting advanced production technology and strict quality control system, the production process is fully automated and the product quality is reliable.  Our pipes and fittings are produced in strict accordance with national standards, using organic tin environmental protection formula to ensure stable product quality and water quality safety.  

How to Calculate the Diameter of a Worm Gear

worm shaft
In this article, we will discuss the characteristics of the Duplex, Single-throated, and Undercut worm gears and the analysis of worm shaft deflection. Besides that, we will explore how the diameter of a worm gear is calculated. If you have any doubt about the function of a worm gear, you can refer to the table below. Also, keep in mind that a worm gear has several important parameters which determine its working.

Duplex worm gear

A duplex worm gear set is distinguished by its ability to maintain precise angles and high gear ratios. The backlash of the gearing can be readjusted several times. The axial position of the worm shaft can be determined by adjusting screws on the housing cover. This feature allows for low backlash engagement of the worm tooth pitch with the worm gear. This feature is especially beneficial when backlash is a critical factor when selecting gears.
The standard worm gear shaft requires less lubrication than its dual counterpart. Worm gears are difficult to lubricate because they are sliding rather than rotating. They also have fewer moving parts and fewer points of failure. The disadvantage of a worm gear is that you cannot reverse the direction of power due to friction between the worm and the wheel. Because of this, they are best used in machines that operate at low speeds.
Worm wheels have teeth that form a helix. This helix produces axial thrust forces, depending on the hand of the helix and the direction of rotation. To handle these forces, the worms should be mounted securely using dowel pins, step shafts, and dowel pins. To prevent the worm from shifting, the worm wheel axis must be aligned with the center of the worm wheel’s face width.
The backlash of the CZPT duplex worm gear is adjustable. By shifting the worm axially, the section of the worm with the desired tooth thickness is in contact with the wheel. As a result, the backlash is adjustable. Worm gears are an excellent choice for rotary tables, high-precision reversing applications, and ultra-low-backlash gearboxes. Axial shift backlash is a major advantage of duplex worm gears, and this feature translates into a simple and fast assembly process.
When choosing a gear set, the size and lubrication process will be crucial. If you’re not careful, you might end up with a damaged gear or 1 with improper backlash. Luckily, there are some simple ways to maintain the proper tooth contact and backlash of your worm gears, ensuring long-term reliability and performance. As with any gear set, proper lubrication will ensure your worm gears last for years to come.
worm shaft

Single-throated worm gear

Worm gears mesh by sliding and rolling motions, but sliding contact dominates at high reduction ratios. Worm gears’ efficiency is limited by the friction and heat generated during sliding, so lubrication is necessary to maintain optimal efficiency. The worm and gear are usually made of dissimilar metals, such as phosphor-bronze or hardened steel. MC nylon, a synthetic engineering plastic, is often used for the shaft.
Worm gears are highly efficient in transmission of power and are adaptable to various types of machinery and devices. Their low output speed and high torque make them a popular choice for power transmission. A single-throated worm gear is easy to assemble and lock. A double-throated worm gear requires 2 shafts, 1 for each worm gear. Both styles are efficient in high-torque applications.
Worm gears are widely used in power transmission applications because of their low speed and compact design. A numerical model was developed to calculate the quasi-static load sharing between gears and mating surfaces. The influence coefficient method allows fast computing of the deformation of the gear surface and local contact of the mating surfaces. The resultant analysis shows that a single-throated worm gear can reduce the amount of energy required to drive an electric motor.
In addition to the wear caused by friction, a worm wheel can experience additional wear. Because the worm wheel is softer than the worm, most of the wear occurs on the wheel. In fact, the number of teeth on a worm wheel should not match its thread count. A single-throated worm gear shaft can increase the efficiency of a machine by as much as 35%. In addition, it can lower the cost of running.
A worm gear is used when the diametrical pitch of the worm wheel and worm gear are the same. If the diametrical pitch of both gears is the same, the 2 worms will mesh properly. In addition, the worm wheel and worm will be attached to each other with a set screw. This screw is inserted into the hub and then secured with a locknut.

Undercut worm gear

Undercut worm gears have a cylindrical shaft, and their teeth are shaped in an evolution-like pattern. Worms are made of a hardened cemented metal, 16MnCr5. The number of gear teeth is determined by the pressure angle at the zero gearing correction. The teeth are convex in normal and centre-line sections. The diameter of the worm is determined by the worm’s tangential profile, d1. Undercut worm gears are used when the number of teeth in the cylinder is large, and when the shaft is rigid enough to resist excessive load.
The center-line distance of the worm gears is the distance from the worm centre to the outer diameter. This distance affects the worm’s deflection and its safety. Enter a specific value for the bearing distance. Then, the software proposes a range of suitable solutions based on the number of teeth and the module. The table of solutions contains various options, and the selected variant is transferred to the main calculation.
A pressure-angle-angle-compensated worm can be manufactured using single-pointed lathe tools or end mills. The worm’s diameter and depth are influenced by the cutter used. In addition, the diameter of the grinding wheel determines the profile of the worm. If the worm is cut too deep, it will result in undercutting. Despite the undercutting risk, the design of worm gearing is flexible and allows considerable freedom.
The reduction ratio of a worm gear is massive. With only a little effort, the worm gear can significantly reduce speed and torque. In contrast, conventional gear sets need to make multiple reductions to get the same reduction level. Worm gears also have several disadvantages. Worm gears can’t reverse the direction of power because the friction between the worm and the wheel makes this impossible. The worm gear can’t reverse the direction of power, but the worm moves from 1 direction to another.
The process of undercutting is closely related to the profile of the worm. The worm’s profile will vary depending on the worm diameter, lead angle, and grinding wheel diameter. The worm’s profile will change if the generating process has removed material from the tooth base. A small undercut reduces tooth strength and reduces contact. For smaller gears, a minimum of 14-1/2degPA gears should be used.
worm shaft

Analysis of worm shaft deflection

To analyze the worm shaft deflection, we first derived its maximum deflection value. The deflection is calculated using the Euler-Bernoulli method and Timoshenko shear deformation. Then, we calculated the moment of inertia and the area of the transverse section using CAD software. In our analysis, we used the results of the test to compare the resulting parameters with the theoretical ones.
We can use the resulting centre-line distance and worm gear tooth profiles to calculate the required worm deflection. Using these values, we can use the worm gear deflection analysis to ensure the correct bearing size and worm gear teeth. Once we have these values, we can transfer them to the main calculation. Then, we can calculate the worm deflection and its safety. Then, we enter the values into the appropriate tables, and the resulting solutions are automatically transferred into the main calculation. However, we have to keep in mind that the deflection value will not be considered safe if it is larger than the worm gear’s outer diameter.
We use a four-stage process for investigating worm shaft deflection. We first apply the finite element method to compute the deflection and compare the simulation results with the experimentally tested worm shafts. Finally, we perform parameter studies with 15 worm gear toothings without considering the shaft geometry. This step is the first of 4 stages of the investigation. Once we have calculated the deflection, we can use the simulation results to determine the parameters needed to optimize the design.
Using a calculation system to calculate worm shaft deflection, we can determine the efficiency of worm gears. There are several parameters to optimize gearing efficiency, including material and geometry, and lubricant. In addition, we can reduce the bearing losses, which are caused by bearing failures. We can also identify the supporting method for the worm shafts in the options menu. The theoretical section provides further information.

China OEM Economical CZPT Casting Cross Tee for UPVC/CPVC Pipes Good Price     near me manufacturer China OEM Economical CZPT Casting Cross Tee for UPVC/CPVC Pipes Good Price     near me manufacturer