LANGUAGE
- English
- Русский язык

PRODUCTS

Product Category

E-Mail：Jk@vjkvalve.com
Tel: +86-15355978323
（ Whatsapp/Wechat )

Category:

Control Valve

Self Operated Regulating Valve

Keyword：

Self Operated Nitrogen Supply Control Valve

Nitrogen seal control valve has two kinds of Nitrogen supply regulation and nitrogen release regulation, which can depend on the pressure change of the regulated medium itself to achieve the purpose of automatic regulation and stable pressure. It is mainly used to keep the container at the top of the shielding gas (usually nitrogen) pressure constant, so as to avoid direct contact with the air container material, prevent evaporation materials, oxidation, and the safety of the vessel.

Standard
Design standard	ANSI B16.34, API 6D, ISO 5208, DIN 3356, JIS B2071, BS 1873, GB/T 12237, GB/T 12238, EN 593, etc
Wall thickness standard	ANSI B16.34, BS 1873, DIN 3356, JIS B2071, EN 593, GB/T 12224, JB/T 3595, etc
Thread standard	GB/T 12716-1991 NPT, GB/T 7306-2000 PT, GB/T 7307-2001 G, DIN 2999, JIS B0203, NF E03-005, etc

Technical data
Pressure range	PN1.6MPa, 2.5MPa, 4.0MPa, ANSI 150lb~300lb
Size range	DN6 (1/4”)~DN300 (12”)
Pressure balance	stainless steel bellows
Flanged ends	ANSI B16.5, API 605, BS 4504, DIN 2501, JIS B2220, EN 1092-1, GB/T 9112, GB/T 17241.6, etc
Temperature range	≤80℃

Valve material
Body material	cast steel (HT200), cast steel (ZG230-450), cast stainless steel (ZGICr18Ni9Ti, ZGICr18Ni12M02Ti), etc
Trim material	304, 316, 316L, 2205, 2507, 2Cr13, 4Cr13, F11, F22, etc
Plug material	stainless steel 1Crl8Ni9Ti, 1Crl8Ni12M02Ti (metal seat), stainless steel inlaid rubber ring 304/316+PTFE (soft seat)
Seat material	304, 316, 316L, 410, 20, 17-4PH, Monel, Hastelloy, etc
Stem material	stainless steel (1Cr18Ni9Ti, 1Crl8Nil2M02Ti), etc

Design feature
Spool type	single seat (P), double seat (N), sleeve (M)
Flow characteristics	quick open

Inspection and test
Leakage rating	IEC60534: IV, VI (ANSI70.2)
Inspection and testing standard	ANSI/FCI 70-2, API 598, BS EN 12266, DIN EN 12266, JIS B2003, EN 12266-1, GB/T 13927, JB/T 9092, etc