Origin	Korea
Material	Stainless Steel
Specification	98x81mm

Hydraulic Door Closer

- Ease of Installation & set up

- Lower Energy Opening Force

- Smooth & Precise Closing Action

The first door closer, Rack & Pinion type, was invented by Lewis C. Norton of America in 1877. It has been used for 130 years since then without any notable structural development.

PG Korea Corporation. developed an original technology

that a new mechanism distinguished from existing products was applied.

This original technology excels existing door closers in structure, performance, design,

construction method, and user's convenience.

New Technology(Rotary Shock Absorber Type)

First application of non-touched spiral spring

Hydraulic damper

Contact : PG Korea / Tony Gwon.

 / tel : 82 10 3387 1662 / email: pgsales(at)naver.com              

* Comparison of Major Specifications *

	OUR Door Closer	Existing  Door Closer
Photo
Type	Slide Arm Type              Link Arm Type	Link Arm Type
Size	98x81mm	200(400)x110(150)mm
mechanism	Rotary Direct Control	Rack & Pinion

* Analysis of Differences as Products *

	OUR Product	Existing Products
Defects	There is no chance for chips to happen under the structure of oil pressure. Defects have been minimized.	Metal chips are likely to happen due to friction between the parts. They affect many parts to bring about frequent defects.
Op. section Precision	Speed control section is precisely set in the oil pressure damper. Delay or Speed Up section works well according to the closing angle of door.	Delay section varies much. Speed Up section is not constant. Door gets closed too fast , or doesn't get closed well.
Speed Control	Easy to control the speed for user's convenience.	Hard to control the closing speed of door.
Oil Used	Special oil that is less likely to change -Closing speed doesn't vary much with the seasons. Once set, no more control.	General oil for oil pressure. -Closing speed varies with the season. Frequent need to control.
Design	A new mechanical structure of Rotary Direct Control Type. Small size. Simple and various designs .	Rectangle-shaped. Lockstep design connecting door and door frame with arm-lever.
User's Convenience	Easy to use for children and seniors due to light load.	Hard to use for children and seniors due to heavy load.