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Category:

Control Valve

Pneumatic Control Valve

Keyword：

Pneumatic Balanced Labyrinth Control Valve

Balanced labyrinth control valve features a labyrinth cage with a balanced spool design. The labyrinth sleeve consists of a cylindrical disc with a plurality of coaxial surfaces distributed with a labyrinth. According to the different process parameters of the medium, the different labyrinth diameter specifications and the number of laminated layers are designed to form a cage. The cage divides the total flow passage into a number of small or even stepped throttle passages, forcing the fluid to continuously change the flow direction.

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
Actuator standard	ANSI/ISA-75.25, BS EN ISO 5211, DIN EN ISO 5211, JIS B 8391, EN ISO 5211, GB/T 12222, JB/T 9093, JB/T 8861, etc

Technical data
Pressure range	PN16~PN64, ANSI 150lb~ANSI 300lb, JIS 10K
Size range	DN20 (3/4”)~DN300 (12”)
Flanged ends	ANSI B16.5, API 605, BS 4504, DIN 2501, JIS B2220, EN 1092-1, GB/T 9112, GB/T 17241.6, etc
Butt-Weld BW ends	ANSI B16.25, BS 1640, DIN 3239, JIS B2312, EN 12627, GB/T 17185, GB/T 9113, etc
Temperature range	-30℃~260℃ (single seat structure); -196℃~570℃ (double seat structure)

Valve material
Body material	WCB, WC6, WC9, CF8, CF8M, CF3, CF3M, etc
Trim material	304, 316, 316L, 2205, 2507, 2Cr13, 4Cr13, F11, F22, etc
Spool and seat material	304, 316, 316L, 410, 20, 17-4PH, Monel, Hastelloy, etc
Cage material	CF8, CF8M, etc
Stem material	304, 316, 316L, 420, 17-4PH, etc

Design feature
Trim features	sleeve-guided, balanced internal structure, labyrinth butterfly cage combination
Body type	straight-through, angled
Bonnet form	standard, heat sink, low temperature
Flow characteristics	equal percentage, linear, quick opening

Inspection and test
Leakage rating	ANSI/FCI 70-2, API 598, BS 6364, DIN EN 12266, JIS B2003, EN 12266-1, GB/T 13927, JB/T 9092, etc
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