Strength of Ball Valve

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Strength of PE Ball Valve for gas and water pipe and precautions in construction
Strength of PE Ball Valve of DAEYOUN CO., LTD.

1. KS standard product (KS M ISO : Thermoplastic manual Ball Valve
2. Space utilization is free because it is an underground buried type
And it is possible to use to a very small manhole
3. Tapered Female (TF) is unnecessary during PE pipe construction, and operation is easy with 1/4 turn open and close way
4. There is no concern for electrolytic corrosion and corrosion since PE is used
5. It has outstanding fusion capability as the EF method is applied in making the “BODY” and “END”
6. The valve for purge uses polyethylene, so the design is excellent and there is no concern about corrosion
7. As “END” follows KS M3514, ISO, ASTM, JIS, KS Standard. So EF socket or butt fusion can be used
8. Depending on construction methods, users can select any purge among no-purge, 1-purge, or 2-purge
9. Gear box is installed in large ball valve (over 200mm or larger), so rotating torque is small and the opening or closing operation is easy.

Precaution in operation In opening/closing a valve, a main adapter (left) shall be used typically and sub adapter for emergency (right) shall be used in emergency
Precaution in construction 1. The caps on both ends shall be covered to prevent foreign materials from being inserted into a valve until a pipe is sealed to the valve
2. A ball shall be kept completely open when moving and installing a valve.
3. The area around the valve shall be laid with good quality sand.
4. No shock shall be imposed to the valve during operation or unloading.
5. Drawing can be changed depending on site conditions
Ball valve parts material
▶ Ball valve parts material
▶ Features of PE Ball Valve
NO Item Material
1 BODY POLYETHYLENE (PE)
2 END POLYETHYLENE (PE)
3 BALL POLYPROPYLLENE (PP)
4 BALL SEAT NITRILE-BUTADIENE RUBBER(NBR) (NBR)
5 RETAINER POLYPROPYLLENE (PP)
6 STEM ACETAL
7 ADAPTER POLYPROPYLLENE (PP)
8 STEM O-RING NITRILE-BUTADIENE RUBBER(NBR) (NBR)
9 ADAPTER O-RING NITRILE-BUTADIENE RUBBER(NBR) (NBR)
▶ PE Ball Valve Specifications
ITEM SPECIFICATION
Purpose of use Gas Water Pipe
Used material PE80(PE2406) PE100( PE3408 - PE4710)
PE100(PE3408-4710)
Working pressure PE80 : 4bar / PE100 : 10bar 16bar
SDR SDR : 11, SDR : 17 (소비자 선택가능)
Workable temperature -29℃ ~ 60℃
Construction Method of END Butt and Electro socket fusion are available
Bore type Full Bore
Stem type SShort or Long stem type
Purge type Standard type, No purge type, 1 purge type, 2purge type (Can be chosen by consumer)
Fusion method of BODY and END EF socket fusion / Butt fusion
Open / Close method OPEN : 1/4 Trun Left, CLOSE : 1/4 Trun Light
Special ball valve

Special production of product height, bypass, flange purge type, etc. is possible upon customer's request

Gearbox configuration and specifications
▶ Material and configuration of Gearbox
No Item Material
1 Gearbox upper cover POLYETHYLENE(PE)
2 Gearbox bottom cover POLYETHYLENE(PE)
3 Driving gear POLYPROPYLENE(PP)+GB
4 Core gear POLYPROPYLENE(PP)+GB
5 Sub stem gear POLYPROPYLENE(PP)+GB
6 O-ring NITRILE-BUTADIENE RUBBER(NBR)
*Insert gear material is made of metal

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