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DA08 Cryogenic Safety Valves for Dewar Bottle Gas Cylinders Brass

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DJ10 Cryogenic Globe Valves Accessory for Dewar Bottle Gas Cylinders TYPE DJ-10B1 DJ-10B2 DJ-10B3

● Spring loaded stem seal automatically adjusts for any gasket wear,eliminating the need to constantly re-tighten the packing nut.
● Non-rising stem and low profile allow the valve to fit into tight areas and still provide easy access.Long life and low torque,anti-blowout stem.
● Unique pressure-sealed moisture barrier helps prevent freeze up at cryogenic temperatures.
● Conical swivel seal design helps prevent seat galling from over torquing.
● Cleaned and degreased for liquid oxygen service per CGA G-4.1.
● Maximum working pressure is 580PSIG.(4.0 MPa)
● Working temperature range is -320°to+185°F.(-196℃to+85℃)
● 100%Factory Tested
● Comply with TSG 23 requirements
● Comply with GB/T34530.2 requirements

Model:
DJ-10B1 DJ-10B2 DJ-10B3
Brand:
SLDW

Size:	DJ-10B1 DJ-10B2 DJ-10B3
Availability:

Quantity:



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Product Description

| Overview

DJ-10B1, DJ-10B2, and DJ-10B3 are brass-bodied straight-through cryogenic globe valve sub-models in the DJ10 series, specifically designed as accessories for welded insulated gas cylinders (Dewar bottles). They share identical core specifications but differ in outlet tube length and orientation, each corresponding to a different functional port on the Dewar bottle (liquid phase, gas phase, pressure-building ports), used for on/off control of cryogenic liquid (LNG/LO2/LN2/LAr) filling, supply, and pressure control lines.

| Working Principle

Open：Turn handwheel counterclockwise → Stem drives disc upward → PCTFE seal lifts off seat → Cryogenic medium flows from inlet through valve cavity to outlet tube → Passage open.

Close：Turn handwheel clockwise → Stem drives disc downward → PCTFE seal presses against seat → Medium passage cut off → Passage closed.

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Factory Shoot

阀门机器1 (1)(1)(1)

阀门机器1 (3)

阀门机器1 (2)

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Application Video

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Product parameters

鑫鑫鹏低温阀样册_17 鑫鑫鹏低温阀样册_18 鑫鑫鹏低温阀样册_19 鑫鑫鹏低温阀样册_20 鑫鑫鹏低温阀样册_21 鑫鑫鹏低温阀样册_22 鑫鑫鹏低温阀样册_23 鑫鑫鹏低温阀样册_24

| Data Sheet

低温截止阀-4(1)

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Comment & FAQ

1: What is the standard valve configuration on a Dewar bottle?

A: A standard Dewar bottle typically has 4 DJ-10B globe valves + 1 DA08 safety valve (see table above). B1 and B3 are visually distinct; two B2 valves look identical but serve different functions — check port labels during installation.

2. What's the difference between B series and P series (DJ-10P)?

A: Safety valves are for compressible fluids (steam, air, gas) and open with a quick pop action. Relief valves are for incompressible fluids (water, oil) and open proportionally. Safety relief valves can handle both.

3. What does set pressure mean?

A: B series (B1/B2/B3): HPb59-1 brass body, best value for conventional LNG/LO2/LN2/LAr service.

P series (P1/P2/P3/P4): CF8 stainless steel body, superior corrosion resistance for high-cleanliness or brass-incompatible media.

4. Are the PCTFE seals interchangeable across B1, B2, and B3?

A: Fully interchangeable. The internal structure, disc dimensions, and seat dimensions are identical across all three models. The PCTFE seal is the same spare part — no need to purchase model-specific seals.

| Buying Tip：

Standard Dewar valve configuration: B1 (fill) ×1 + B2 (gas+PB) ×2 + B3 (supply) ×1 + DA08 safety valve ×1. PCTFE seals are universal consumables — keep 3-5 in stock. B series (brass) offers best value for conventional service; choose P series (stainless) for corrosive media or high cleanliness requirements. The fill port (B1) sees the highest usage frequency — prioritize it for inspection and maintenance.