ACTUATORS
LINEAR ACTUATOR
ROTARY ACTUATOR
INSTRUMENTS
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PNEUMATIC ACCESSORY
SEVERE SERVICE SOLUTIONS
FAST OPEN / CLOSE SYSTEM
FIRE SAFETY SOLUTIONS
SERVICE
TESTING
TRAINING
FIELD SERVICES

PRODUCT

We will continue exerting our utmost effort to manufacture quality product to cope with the needs of the customers through the research and development based on the technology we have.

Cryogenic Service Butterfly Valve

image of Cryogenic Service Butterfly Valve

CRYOGENIC BUTTERFLY VALVE

The PROVAL valve utilizes a double offset disc design, coupled with a flexible metal seat design which provides an independent static and dynamic seal. Seat design allows for self-centering on the disc. The valve is capable of achieving tight shut off at cryogenic temperatures, bidirectional sealing, and is firesafe.

The use of an all metal seat design, allows the valve to withstand a partial or full burn in a condition. The metal seat design provides a fire safe seal, all the time; and is not dependent on fire intensity.

THE PROVAL CRYOGENIC BUTTERFLY VALVE range has been extensively used on applications including low temperature gas and liquid service(Liquid Nitrogen, Oxygen & Hydrogen)

LNG Tankers on process duties, Onshore LNG Production Plants and Onshore Gas Distribution Terminals.

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FEATURES

· Actuators
Pneumatic, hydraulic, electric or manual gear Fast action actuators for "Emergency" Shut-down function
· Extended Bonnet
Width a sufficient gas column to keep the stem packing away from the cold fluid
· In-line easy maintenance
This design allows easy and quick in-line maintenance.
· RELIABILITY
Reliability of valve operation affects service life and ease of inspection and maintenance. In order to predict reliability, a sound valve desig must be backed up by a stress analysis and functional qualification testing under critical operating conditions.

SPECIFICATION

Model No. YABC-113E3, YABBC-113E3, YABBC-123E3, YABHC-123E3
Valve Type Cryogenic Butterfly Valve.
Actuator Pneumatic, Hydraulic, Electric or Manual gear operating.
BODY Valve Size (mm) 100A 125A 150A 200A 250A 300A 350A 400A 450A 500A 550A 600A 650A 700A 750A 800A 850A 900A 1000A
(inch) 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 22" 24" 26" 28" 30" 32" 34" 36" 40"
Pressure Rating ANSI 150# ~ 300# / JIS 10K ~ 20K / JPI 150# ~ 300# / PN 6bar ~ 25bar (※JIS 30K, ANSI 600#)
End Connections BUTT-WELDING, FLANGED, WAFER Type
Body Materials CAST : A351-CF8, CF8M, CF3, CF3M FORGING :A182-F304, F316, F316L
Operating
Temperature		 Soft seat -196°C ~ 150°C (PCTFE)
Metal seat -196°C ~ 260°C (CURVE Copper, Inconel625, Steel+STL.)
Guide Top & Bottom guide
Gland Packing V-PTFE, GRAPHITE, VITON O-RING.
Painting Color Standard is silver. In the case of stainless steel, flange is not painted.
Disc Characteristics Modify EQ %, Quick opening
Flow Direction Direct
PERFORMANCE Valve Action Direct action, Reverse action. & Manual gear Operator
Rated Cv Value See “FLOW CHARACTERISTICS” page 5
Flow Characteristics See “FLOW CHARACTERISTICS” page 5
Rangeability 20:1
Allowable Seat
Leakage Ratio		 Soft Seat ANSI B16. 104 Class VI
Metal Seat See “ALLOWABLE SEAT LEAKASE Page 5
Action
Accuracy		 Hysteresis (Without positioner) max. 5% F.S. (With positioner) max. 2% F.S.
Linearity (Without positioner) max. ±6% F.S. (With positioner) max. ±2% F.S.

[Notes]
※: Manufactured and attached as according to customer’s order.

DOCUMENTS & DRAWINGS

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