**
Bosch Test Specifications Instructions for testing PE-a PE-
**
This manual provides detailed instructions for testing PE-a and PE-b polyethylene pipes and fittings in accordance with the requirements of ISO 4427-2, ISO 4427-3, and ISO 12162. The manual includes procedures for:
* **Visual inspection**
* **Dimensional measurements**
* **Mechanical testing**
* **Pressure testing**
* **Leak testing**
* **Environmental testing**
The manual also includes information on the test equipment and materials required, as well as safety precautions that must be followed when conducting the tests.
**
PE-a and PE-b Polyethylene Pipes and Fittings
**
PE-a and PE-b polyethylene pipes and fittings are used in a wide variety of applications, including:
* **Water supply**
* **Gas distribution**
* **Industrial piping**
* **Agricultural irrigation**
* **Mining**
PE-a and PE-b polyethylene pipes and fittings are made from high-density polyethylene (HDPE), which is a thermoplastic material that is known for its strength, durability, and flexibility. HDPE is also resistant to corrosion and chemicals, making it an ideal material for use in a variety of applications.
PE-a and PE-b polyethylene pipes and fittings are available in a variety of sizes and configurations to meet the specific needs of each application. They are also easy to install and can be joined together using a variety of methods, including:
* **Butt fusion**
* **Electrofusion**
* **Socket fusion**
* **Mechanical joints**
PE-a and PE-b polyethylene pipes and fittings are an excellent choice for a wide variety of applications. They are strong, durable, flexible, and resistant to corrosion and chemicals. They are also easy to install and can be joined together using a variety of methods.
Bosch Test Specifications Instructions for testing PE-a & PE-B
Instructions for Testing Injection Pumps
PE..A.. and PE..B.. and Governors
Page
I. General Hints 1
A) Testing Conditions 2
B) Inspection and Preliminary Test . 2
C) Sequence of Operations .
D) Direction of Rotation
II. Adjusting the Commencement of Delivery
A) General ..... . . . 3
B) Preparations for Testing .
C) Setting the Pre-Stroke . 4
D) Marking the Commencement (or End) of De .e•v 6
HI. Checking the Delivery Quantity
A) General ...... . 6
B) Adjusting the Adaptor Valves
C) Setting initial compresslon of No-i-z e -e• F Vaives . 8
D) Adjustment of Delivery Quantity
IV. Testing Various Governors
A) General Hints on Centrifi.;go: Gevernes . . 9
B) Idling and Maximum Speed Gove•-ers 7,ices R. and RP 11
C) Variable Range Speed Governeor . 12
D) (Sliding Block-) Idling and Seeezt C.7overnor, Type RO 12
E) (Sliding Block-) Variable Range Speed, Ge.e—er. Type ROV 14
F) Pneumatic Governors, Types EP M. NAZ MN 16
V. Setting the Full-Load Output
A) General 17
B) Idling and Maximum Speed Governors (R, RP, RO) . 18
C) Variable Range Speed Governors RV ca ROV
without Aaaptation . . 18
D) Variable Range Speed Governors RV and ROV with Adaptation 18
E) Special Case: Automatic Control Rod Stoe on E c...e of Governor
(e.g. .. A 82 for MAN.) . . . . 20
F) Pneumatic Governors . 20
VI. Testing the Quantity of Fuel required for Starting
A) Pumps Provided with Automatic (Elastic or Ad p. Jstaele)
Control Rod Stop . ...... . 21
B) Pumps Provided with Push or Pull-Button Control . . 21
C) Control Lever for Intermediate Speed on ROV Governors 22
VII. Testing Automatic injection Timing Devices
A) General 22
B) Test ...... . . 22
VIII. Securing and Sealing the Stops 23
IX. Rules for Adjusting Pumps for which no definite Full-load Output
has been specified
A) Idling and Maximum Speed Governors . .
B) Variable Range Speed Governors 24
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