Govardhan UPVC Agricultural Pipes




Govardhan UPVC Agricultural Pipes that we offer are gaining high popularity due to their sturdy construction and dimensional accuracy. We are enlisted among the reputed Manufacturers and Suppliers of PVC Pipes from Haryana, India. We manufacture PVC Pipes using the latest techniques at our well-equipped production unit. Our PVC Pipes are subjected to stringent quality tests so as to eliminate each and every possibility of defect from them.

 

Properties

  • Thermal conductivity : 4X 10-4Cal/ hr. cm2/0c/cm
  • Co-efficient of linear expansion : 5.4x10-5mm/m/0c
  • Specific Gravity: 1.41—1.46gm/cm2
  • Impact strength : Complies with IS : 49852000
  • Modulus of elasticity : 3.0-3.8x104kgf/cm2
  • Electrical Resistance : 1014 ohm-cm
  • Vicat Softening Point  : 80oc
  • Tensile strength : 500-550kg/cm2
  • Williams and Hazen constant : 150 remain constant

 

Basic parameters

  • Water quantity (Q) : The amount of water required to irrigate the land, considering crop pattern and irrigation frequency (in liters/ second)
  • Length of pipe line (L) : the length of the pipe , form source to destination of Discharge point (in meters)
  • Static Head (H) : The level difference between the lowest and the highest level of the pipe (in meters)

 

Selection of pipe
For best efficience and optimum output, use the flow chart available below show. It is suggested that one should select the pipe size at an inter section of velocity 1 meter/ second and discharge (liter/scond). Frictional losses (h2) are also to be taken care of as shown in the diagram.

Frictional losses can also be calculated by empirical hazen willams formula i.e :

  • V= 4.567x10xcxdxs
  • Whrere v= velocity of fluid flowing through the pipe
  • D= internal diameter of the pipe
  • C=Hazen williams co-eff. For PVC (150)


Guideline for pressure class selection

  • The total head (h) acting on the pipe area on a particular point is calculated as H= h1+h2+10%(h1+h2)(in meter/km)
  • Where 10% (h1+h2) is the safety factor for losses in values and fittings

 

Selection of pump
The formula is - HP of the pump= QxH/75 x h
Wheres =Efficiency of the pump in % (I.E. 65%)
From the basis of these calculations suitable pump can be procured from the market

Selection and installation of the air valves
An air valve in the pipe line, functions the way are nose does. This is one of most critical – yet often neglected components in an Upvc pipe line. Since air is compressible in nature , it tends to accumulate in the pipe line. A non- functional air valve cause the accumulated air to generate very high localized pressure. This can not be read on a conventional pressure gauge. To avoid such an accurence, air valve should be installed at distances of 300 to 400 meters at peak points through out the pipe line. Such air valves can be easily procured from the market by having a proper selection of material available.

 

The thumb rule principle is : 1 kgf/cm=10 m of water column

 

Upvc Agriculture Pipe

  • Size : 20mm to 315mm
  • Range : 2.5 kgf/cm2
  • 4kgf/cm2
  • 6kgf/cm2
  • 10kgfcm2


Selection of High Pressure Class

Total head (m)

Pressure (kgf/cm2)

80-100

10

60-80

8

40-60

6

25-40

4

00-25

2.5


Dimension as per is 4985:2000

Nominal Diameter Length (meters) Class 1 2.5kgf/cm2 Class 2 4kgf/cm2 Class 3 6kgf/cm2 Class 5 10kgf/cm2
(MM) (Inch) Min Max. Min Max. Min Max. Min Max.
20 0.5 6 - - - - - - 1.1 1.5
25 0.75 6 - - - - - - 1.4 1.8
32 1.0 6 - - - - - - 1.8 2.2
40 1.25 6 - - - - 1.4 1.8 2.2 2.7
50 1.5 6 - - - - 1.7 2.1 2.8 3.3
63 2.0 6 - - 1.5 1.9 2.2 2.7 3.5 4.1
75 2.5 6     1.8 2.2 2.6 3.1 4.2 4.9
90 3.0 6 1.3 1.7 2.1 2.6 3.1 3.7 5 5.7
110 4.0 6 1.6 2.0 2.5 3.0 3.7 4.3 6.1 7.1
125 4.5 6 1.8 2.2 2.9 3.4 4.3 5.0 6.9 8.0
140 5.0 6 2.0 2.4 3.2 3.8 4.8 5.5 7.7 8.9
160 6.0 6 2.3 2.8 3.7 4.3 5.4 6.2 8.8 10.2
180 7.0 6 2.6 3.1 4.2 4.9 6.1 7.1 9.9 11.4
200 8.0 6 2.9 3.4 4.6 6.3 6.8 7.9 11.0 12.7
250 10.0 6 3.6 4.2 5.7 6.5 8.5 9.8 13.8 15.9
280 11.0 6 4.1 4.8 6.4 7.4 9.5 11.0 15.8 17.8
315 12.0 6 4.6 5.3 7.2 8.3 10.7 12.4 17.3 19.9