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A351 CN7M Alloy 20 Plug Valve

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MOQ : 5 Units

A351 CN7M Alloy 20 Plug Valve Specification

Size
1/2 to 12

Application
Chemical, Petrochemical, Pharmaceutical, Food Processing, Wastewater Treatment

Connection
Flanged, Threaded, Welded

Sealing
PTFE or Metal to Metal

Material
A351 CN7M Alloy 20

Valve Structure
Plug Valve

Media
Water, Oil, Gas, Acids, Alkalis, Chlorides

Temperature of Media
-29C to 180C

Weight
4.5 kg (for 2 size)

Dimension (L*W*H)
210mm x 120mm x 85mm (for 2 size)

Power Mode
Manual

Face to Face Standard
ASME B16.10

Body Material
Cast Alloy 20 (CN7M)

Packing
PTFE/Viton/Graphite

Flange Standard
ASME B16.5

Design Standard
ASME B16.34, API 599

Seat Material
PTFE, Metal Seated

Handle Material
Stainless Steel

End Connection Type
Raised Face (RF), RTJ

Corrosion Resistance
Excellent for acids and chlorides

Operation
Quarter-Turn, Wrench Operated

Pressure Rating
Class 150/300/600

Flow Direction
Bi-directional

Leakage Class
Class VI

Testing Standard
API 598

A351 CN7M Alloy 20 Plug Valve Trade Information

Minimum Order Quantity
5 Units

Supply Ability
200 Units Per Month

Delivery Time
7 Days

About A351 CN7M Alloy 20 Plug Valve

Specification	Details
Design Standard	API 6D / API 599
Pressure/Temperature Char	ASME B16.34
Face to face Dimension	API 6D / ASME B16.10
Testing Standard	API 6D / API 598
Flange Details	ASME B16.5 UP TO 24 ASME B16.47 ABOVE 24
Size Range	2 36 (DN50 DN900)
ASME Class	150 2500
Materials	WCB / LCB / LCC / CF8M / CF8 / CF3M
Trims	F6a / F316 / F304 / F316L / F51
Seats	Metallic
Ends	Flanged / Butt-weld End

Pressure balance lubricated plug valves are metal seated valves providing a tight shut off ( 0 leakage ) sealing, valves shall be regularly lubricated along with their operation by injection of suitable grease. Due to no body cavity and as well as a simple & tough design, they are highly recommended for any critical Full P operation and for handling any media with an high % of solids contents, further more they provide an excellent resistance to abrasion, they are free from routine maintenance, providing a long service life.

Product variance:

PRESSURE BALANCED FULL BORE LUBRICATED PLUG VALVES API 6D

PRESSURE BALANCED DB & B LUBRICATED PLUG VALVES API 6D

LUBRICATED PLUG VALVES STANDARD TYPE API 6D - 2 WAYS, 3 & 4 WAYS MULTIPORT

DUAL SEAL PLUG VALVES DB&B API 6D

PLUG VALVES TWO WAY, TREE WAY AND FULLY JACKETED

Production Range:

API6D ASME/ANSI 150 up to 2500 Lb

DN 1/2 to 48 Class: up to 600

DN 1/2 to 36 Class: up to 900

DN 1/2 to 24 Class: up to 150

Superior Corrosion Resistance

Constructed from Cast Alloy 20 (CN7M), this plug valve offers outstanding resistance to acids, chlorides, and alkalis. Its material composition prevents pitting and stress corrosion cracking, making it ideal for use in highly corrosive applications commonly found in chemical and wastewater industries.

Reliable Bi-Directional Sealing

With PTFE or metal-to-metal sealing options and a Class VI leakage specification, the A351 CN7M Alloy 20 Plug Valve assures minimal leakage. Its bi-directional design allows flow in either direction, granting flexibility during installation and operation, especially where space or flow requirements may vary.

Compliant with Global Standards

Engineered and tested according to ASME B16.34, API 599, and API 598, this plug valve guarantees industry-leading safety, performance, and reliability. The flange connections comply with ASME B16.5, ensuring compatibility for integration into new or existing pipeline systems worldwide.

FAQ's of A351 CN7M Alloy 20 Plug Valve:

Q: How does the A351 CN7M Alloy 20 Plug Valve enhance corrosion resistance in chemical applications?

A: The valve's body is cast from Alloy 20 (CN7M), a nickel-iron-chromium alloy specifically formulated for superior resistance to corrosive acids and chloride-containing environments. This makes it particularly effective in chemical, petrochemical, and pharmaceutical industries that handle aggressive media.

Q: What is the typical process for installing this plug valve into a fluid handling system?

A: Installation involves aligning the valve's flanged ends (RF or RTJ) with the corresponding pipeline flanges, securing with appropriately rated bolts and gaskets, and ensuring the valve stem remains accessible for manual operation. Adherence to ASME B16.10 face-to-face dimensions ensures proper fit during replacement or system upgrades.

Q: Where is the A351 CN7M Alloy 20 Plug Valve most effectively used?

A: This plug valve is ideally suited for systems managing water, oil, gas, acids, alkalis, and chlorides. Its robust corrosion resistance and reliable sealing make it advantageous in chemical plants, petrochemical refineries, pharmaceutical manufacturing, food processing facilities, and wastewater treatment plants.

Q: What operational advantages does the quarter-turn, wrench-operated design offer?

A: The quarter-turn operation allows for rapid opening and closing, providing instant control over flow. Wrench operation enhances ease of use, especially in manual systems, and the simple mechanism reduces wear and maintenance requirements in tough industrial settings.

Q: When should you choose PTFE versus metal-to-metal seating for this plug valve?

A: Select PTFE seating when handling less abrasive or corrosive fluids for optimal sealing and lower torque operation. Metal-to-metal seats are preferable in high-temperature, high-pressure, or abrasive service conditions where extra durability and longevity are required.

Q: What benefits does the bi-directional flow capability provide?

A: Bi-directional flow allows fluid to pass in either direction, simplifying installation and permitting flexible pipeline design. This is especially useful in systems where the flow direction may change or space constraints demand versatile valve orientation.

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