Manual worm gear blind valve

Manual worm gear blind valve

Technical Parameter

Nominal diameter: DN300~2000mm

Nominal pressure: PN0.05~0.25MPa

Applicable temperature: -20℃~300℃

Applicable temperature: 200°C (silicon rubber) 300°C (fluorine rubber)

Drive mode: electric, hydraulic, pneumatic, electro-hydraulic

Body Material: Carbon Steel, Rubber, Chrome Steel

Design standard: API 600, API6D, ASME B16.34, GB/T 12234

Structure length: ASME B16.10, API6D, GB/T 12221

Connection standard: ASME B16.5, ASME B16.47, GB/T 9113, JB/T 79, HG/T 20592

Pressure test: API 598, GB/T 13927, JB/T 9092

Pressure-temperature class: ASME B16.34, GB/T 12224


Product Detail

Structural features

The manual worm gear blind valve is mainly composed of the left valve body, the right valve body, the screw pair, the flap, the sealing ring, the lever, the worm gear device and other parts, and a rigid structure is formed by the base and the support column. The rubber sealing ring is embedded on the flip plate, which has the characteristics of high temperature resistance, good sealing performance, convenient replacement and long service life.


Main performance parameters

Nominal pressure MPa0.250.150.100.05
Sealing test pressure MPa0.2750.1650.110.055
Strength test pressure MPa0.400.2250.150.075
Drive sourceCompressed air 0.4-0.6MPa; Oil pressure 6.3MPa; 3-phase 380V 50Hz
Applicable temperature ℃Nitrile rubberSilicone RubberFluororubber
-20-100-20-200-20-300
Applicable mediaGas and other toxic, harmful and flammable gases
Opening and closing time S≤60
Material of main partsThe valve body and gate are made of carbon steel; the screw rod is made of alloy steel; the nut is made of manganese-copper alloy and ductile iron; the expansion joint is made of stainless steel

手动蜗轮盲板阀(图1)

Main connection size

DNLDD1HH1Abn-d
30045044039512003804802212-22
35045049044513004205202212-22
40045054049514005605802216-22
45050059555014005606502416-22
50050064560014806008002416-22
600600755705160076010002420-26
700600860810168088010502624-26
8008009759201860112511292624-30
900800107510202055127012422824-30
1000800117511202240140013753028-30
1100800127512202425153515103028-30
1200800137513202620168016253032-30
1300800147514202760177017493032-30
1400850157515202960192518563236-30
1500850169016303105205019763236-30
1600850179017303300216020933240-30
18001100199019303610237023353244-30
20001100219021303960262025703246-30


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