Best quality China Popular Sale Liquid Nitrogen Oxygen Dewar Cylinders with High Quality

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Vacuum Insulated Pipe (VI Piping), namely Vacuum Jacketed Pipe (VJ Piping) are used for transferring of liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, LEG and LNG, as a Perfect substitute for conventional piping insulation.

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Vacuum Insulated Piping

Vacuum Insulated Pipe (VI Piping), namely Vacuum Jacketed Pipe (VJ Piping), as a Perfect substitute for conventional piping insulation. Compared with conventional piping insulation, the heat leakage value of VIP is only 0.05~0.035 times of conventional piping insulation. Significantly save energy and cost for customers.

The product series of Vacuum Jacketed Pipe, Vacuum Jacketed Hose, Vacuum Jacketed Valve, and Phase Separator in HL Cryogenic Equipment Company, which passed through a series of extremely strict technical treatments, are used for transferring of liquid oxygen, liquid nitrogen, liquid argon, liquid hydrogen, liquid helium, LEG and LNG, and these products are serviced for cryogenic equipment (e.g. cryogenic tanks, dewars and coldboxes etc.) in industries of air separation, gases, aviation, electronics, superconductor, chips, automation assembly, food & beverage, pharmacy, hospital, biobank, rubber, new material manufacturing chemical engineering, iron & steel, and scientific research etc.

Three Connection Types of VI Piping

The three connection types here apply only to the connection positions between VI pipes. When VI Pipe connects with equipment, storage tank and so on, the connection joint can be customized according to customer requirements.

In order to maximize the different needs of customers, Vacuum Insulated Pipe has developed three connection types, namely Vacuum Bayonet Connection Type with Clamps, Vacuum Bayonet Connection Type with Flanges and Bolts and Welded Connection Type. They have different advantages and are suitable for different working conditions.

Scope of Application

	Vacuum Bayonet Connection Type with Clamps	Vacuum Bayonet Connection Type with Flanges and Bolts	Welded Connection Type
Connection Type	Clamps	Flanges and Bolts	Weld
Insulation Type at joints	Vacuum	Vacuum	Perlite or Vacuum
On-site Insulated Treatment	No	No	Yes, perlite filled into or vacuum pump out from the Insulated Sleeves at joints.
Nominal Diameter of Inner Pipe	DN10(3/8″)~DN25(1″)	DN10(3/8″)~DN80(3″)	DN10(3/8″)~DN500(20″)
Design Pressure	≤8 bar	≤16 bar	≤64 bar
Installation	Easy	Easy	Weld
Design Temperature	-196℃~ 60℃ (LH2 & LHe：-270℃ ~ 60℃)
Length	1 ~ 8.2 meter/pcs
Material	300 Series Stainless Steel
Medium	LN₂, LOX, LAr, LHe, LH₂, LNG

Dynamic and Static Vacuum Insulated Piping System

Vacuum Insulated (VI) Piping System can be divided into Dynamic and Static VI Piping System.

l The Static VI Piping is fully completed in the manufacturing factory.

l The Dynamic VI Piping is offered a more stable vacuum state by a continuous pumping of vacuum pump system on site, and the rest of the assembly and process treatment is still in the manufacturing factory.

	Dynamic Vacuum Insulated Piping System	Static Vacuum Insulated Piping System
Introduction	The vacuum degree of the vacuum interlayer is monitored continuously, and the vacuum pump is automatically controlled to open and close, to ensure the stability and effectiveness of vacuum degree	VJPs complete the vacuum insulation work in the manufacturing plant.
Advantages	The vacuum retention is more stable, basically eliminate the vacuum maintenance in the future working.	More economical investment and simple on-site installation
Vacuum Bayonet Connection Type with Clamps	Applicative	Applicative
Vacuum Bayonet Connection Type with Flanges and Bolts	Applicative	Applicative
Welded Connection Type	Applicative	Applicative

Dynamic Vacuum Insulated Piping System: Consist of Vacuum Insulated Pipes, Jumper Hoses and Vacuum Pump System (including the vacuum pumps, solenoid valves and vacuum gauges).

2 Specification and Model

HL-PX-X-000-00-X

Brand

HL Cryogenic Equipment

Description

PD: Dynamic VI Pipe

PS: Static VI Pipe

Connection Type

W: Welded Type

B: Vacuum Bayonet Type with Clamps

F: Vacuum Bayonet Type with Flanges and Bolts

Nominal Diameter of Inner Pipe

010: DN10
…
080: DN80
…
500: DN500

Design Pressure

08: 8bar
16: 16bar
25: 25bar
32: 32bar
40: 40bar

Material of Inner Pipe

A: SS304
B: SS304L
C: SS316
D: SS316L
E:Other

3.1 Static Vacuum Insulated Cryogenic Piping System

3.1.1 Vacuum Bayonet Connection Type with Clamps

Model	Connection Type	Nominal Diameter of Inner Pipe	Design Pressure	Material of Inner Pipe	Standard	Remark
HLPSB01008X	Vacuum Bayonet Connection Type with Clamps for Static Vacuum Insulated Piping System	DN10, 3/8″	8 bar	300 Series Stainless Steel	ASME B31.3	X:Material of Inner Pipe. A is 304, B is 304L, C is 316, D is 316L, E is other.
HLPSB01508X		DN15, 1/2″
HLPSB02008X		DN20, 3/4″
HLPSB02508X		DN25, 1″

Nominal Diameter of Inner Pipe: Recommended ≤ DN25 or 1″. Or selects the Vacuum Bayonet Connection Type with Flanges and Bolts (from DN10, 3/8″ to DN80, 3″), Welded Connection Type VIP (from DN10, 3/8″ to DN500, 20″)

Nominal Diameter of Outer Pipe: Recommended by the Enterprise Standard of HL Cryogenic Equipment. It also can be produced according to requirement of the customer.

Design Pressure: Recommended ≤ 8 bar. Or selects the Vacuum Bayonet Connection Type with Flanges and Bolts (≤16 bar), Welded Connection Type (≤64 bar)