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2 두뇌발달

3 발달놀이

4 사회정서발달놀이

5 놀이추천

6 발달놀이추천

7 아이교구추천

8 교구추천

9 발달교구추천

10 두뇌발달교구

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[KEYSTONE] 버터플라이 밸브 Figure 239/139/129

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Figure 239(Fig.239)- Wafer
Figure 139(Fig.139) - Wafer
Figure 129(Fig.129) - Lugged

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KEYSTONE

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Figure 239/139/129

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삭제
[KEYSTONE] 버터플라이 밸브 Figure 239/139/129 (+0원)

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FEATURES

Factory tested to full regulated pressure to ensure 100% tight shut-off.

Standardised actuator attachment flange allows direct and easy attachment of all Keystone manufactured actuators.

Heavy-duty valve stem provides efficient disc adjustment and standardised stem end dimensions for easy actuator replacement.

The primary seal formed by the contact surfaces of the Seat/Stem/Hub maintains a complete stem seal at the specified pressure, and the body is completely isolated from the fluid.

The secondary stem seal is self-adjusting and can be used not only at regulated pressure but also under vacuum.

Stainless Steel or Monel Disc Screw allows for quick and easy disassembly and ensures a secure connection between disc and stem.

The hard back seat, reinforced with a special steel ring, is replaceable, and the moulded o-ring ensures a reliable flange seal and eliminates the need for gaskets between the flanges, and the high-pressure, no-bond construction allows for quick and easy replacement.

The upper bushing absorbs lateral loads and the self-adjusting packing provides a bi-directional sealing, making it possible to use it under vacuum.

Spring steel ring moulded into the seat prevents the elastomer seat from warping even under extreme operating conditions.

GENERAL APPLICATION

Applied to offshore services and offshore structures and ensures full shielding

Commonly used in the fire protection, offshore plant, vacuum air conditioning, refining, water treatment, pulp & paper, and marine industries

TECHNICAL DATA

Pressure: 16kg/㎠ (230 psi)

Temperature: -40℃ to 120℃ (-40℉ to 248℉)

Size : 50mm to 500mm (2"to 20")

Flange Application : JIS 10K/16K KS 10K/16K ANSI 150

Please consult the factory for other flange accommodation

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