Daeyoun co., ltd.

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)
Used material	PE100(PE3408-4710)	PE100( PE3408 - PE4710)
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