Email Us
Cryogenic Butterfly Valve

Cryogenic Butterfly Valve


Description of Cryogenic Butterfly Valve:

ZECO cryogenic butterfly valve in order to ensure the normal operation of the stuffing box and prevent the stuffing box from freezing and damaging the packing when the stem moves up and down, ZECO designed the long neck cover, the neck position is from the bottom of the packing to the upper sealing seat, so as to reduce the external environment into the device temperature and prevent the influence of low temperature on the packing.The commonly used material of ZECO cryogenic butterfly valve is ASTM A352 LCB, which is suitable for working environment of -46℃, and the other is ASMT A351 CF8, which is suitable for working environment of -200℃. Cryogenic butterfly valve seat is an oblique cone elliptic sealing surface, and the butterfly disc is circular elastic sealing ring on the trip, when the valve is closed, the elastic sealing ring and oval face short shaft contact first, as the rotation of the valve stem to extrusion elliptic sealing surface, force the two seal face all contact, so as to achieve 100% of the sealing effect. When the valve is opened, the elastic deformation disappears at the moment the butterfly plate is opened, and there is no friction between the two sealing surfaces.

 

Features of Cryogenic Butterfly Valve:

1. ZECO cryogenic butterfly valve body volume is small and symmetrical in shape, and the wall thickness is uniform. The difficulty of deformation caused by cold shrinkage and temperature difference stress is much greater than that of products with irregular wall thickness and uneven structure;

2. Based on LPG and LNG low temperature medium flammable and explosive characteristics. ZECO cryogenic butterfly valve is designed in anti fire and anti static structure;

3. ZECO cryogenic butterfly valve s suitable for the management system of low-temperature liquid storage and transportation equipment, with the characteristics of flexible switching and reliable sealing, and can also be used for the management system of other low-temperature and cryogenic media;

4. ZECO cryogenic butterfly valve drive mode for manual, worm drive, pneumatic or electric.


Material of Cryogenic Butterfly Valve:

No

Part

Material

1

Body

ASTM A351 CF3M

2

Seal Ring

Graphite + SS316L

3

Retainer Flange

ASTM A182 F316L

4

Pin

ASTM A276 316L

5

Disc

ASTM A351 CF3M

6

Stem

ASTM A276 316L

7

Stem Packing

Graphite

8

Stem Beating

SS316L + R.TFE

9

Bolt

ASTM A193 B8M

10

Nut

ASTM A194 8M

11

Yoke

ASTM A351 CF3M


Get in Touch
ZECOVALVE supplies high-quality international standard valves, offering the best solution for your projects!

Related Products