WCB Valve – WCB Gate Valve

Description

As one ofgate valve manufacturers china, ZECO Valve Group is certified to API 600 and API 6D and we offer competitive quotations as well as products to our customers.

Table of Contents

What Is WCB Valve Body?

What type of steel is WCB?

Is WCB a Carbon Steel?

Chemical Composition of ASTM A216 WCB & WCC

Mechanical Properties of ASTM A216 WCB & WCC

Applications of WCB material

Features of WCB Gate Valve:

Material of WCB Gate Valve:

What is a WCB Gate Valve?
ZECO WCB bevel gear operated gate valve design reference API 600. WCB gate valves meet ASME B16.10 face to face dimensions. Pipe flanges are surface treated periodically and drilled to a 0.062” (1.5mm) raised surface in accordance with ASME B16.5. Pipe flange raised surface is processed according to MSS sp-6. The wedge is a solid wedge with greater sealing capacity and lower torque requirements. The operation adopts a non-rising handwheel. The closed direction is on the right. The

WCB gate international standard valveis driven by a closed bevel gear. For remote control, these valves can be equipped with electric or pneumatic operating actuators. The gate valves are hydrostatically and pneumatically tested in accordance with the requirements of API 598.

What type of steel is WCB?

Is WCB a Carbon Steel?

A216 WCB is carbon steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of a quality suitable for assembly with other castings or wrought-steel parts by fusion welding.

A216 WCB Temperature Range: -29~425°C

A216 WCB Equivalent material: ASTM A105

A216 WCB Suitable Fluid: Oil, Gas, Water, Petrochemical, non-Corrosion Fluid

Chemical Composition of ASTM A216 WCB & WCC

Element	Composition, %, All Value are maximum	Composition, %, All Value are maximum
	WCB	WCC
	UNS J0302	UNS J02503
Carbon
Manganese	1
Phosphorus
Sulfur
Silicon
Specified residual elements	/	/
Copper
Nickel
Chromium
Molybdenum, max
Vanadium
Total of these specified residual elements (Note E)	1	1

Note:

For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % Mn above the specified maximum will be permitted up to a maximum of 1.28 %.

For each reduction of 0.01 % below the specified maximum carbon content, an increase of 0.04 % manganese above the specified maximum will be permitted to a maximum of 1.40 %.

For lower maximum sulfur content, see Supplementary Requirement S52.

Not applicable when Supplementary Requirement S11 is specified.

Mechanical Properties of ASTM A216 WCB & WCC

	WCB	WCC
	UNS J0302	UNS J02503
Tensile strength, ksi [MPa]	70 to 95 [485 to 655]	70 to 95 [485 to 655]
Yield strength, A min, ksi [MPa] (Note A)	36 [250]	40 [275]
Elongation in 2 in. [50 mm], min, % (Note B)	22	22
Reduction of area, min, %	35	35

Note:

Determine by either 0.2 % offset method or 0.5 % extension-under-load method. When ICI test bars are used in tensile testing as provided for in Specification

A703/A703M, the gage length to reduced section diameter ratio shall be 4 to 1.

Applications of WCB material

WCB material is one of the most widely used carbon steels in the industry. Carbon steel SA216 WCB is used not only in many of the water- and steam-pressure-containing systems in power plants but also in the supports for these systems. Carbon steel SA216 WCB is carbon steel suitable for fusion welding in high-temperature service applications: steel castings for valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of a quality suitable for assembly with other castings or wrought steel parts by fusion welding.

Features of WCB Gate Valve:

The design of the body and bonnet joints of ZECO WCB gate valve requires an even load on the gasket to ensure a tight seal.1500 lb, including 1500 lb usually can use bolted bonnet structure, but 1500 lb of pressure seal structure is used;

The wedge of ZECO WCB gate valve has accurate guide slots, assuring true alignment and providing full guidance during operation. In this way, the gate sealing surface can be exactly matched with the valve seat sealing surface to maintain the zero leakage seal;

ZECO WCB gate valve is provided with a backseat bushing in the bonnet, enabling the replacement of the stem packing when the valve is in the wide open position. However, ZECO does not recommend users to replace the packing when the valve is under pressure, because after all, there is no professional guidance, which is easy to cause danger;

ZECO is a professional manufacturer of WCB gate valves. We have long-term strategic cooperation agreements with a number of foundry companies. Even if the order volume is large, ZECO can deliver the goods to users in a short time.

Material of WCB Gate Valve:

No	Part	Material
1	Body	ASTM A216 WCB
2	Seat Ring	ASTM A182 F304 + 13Cr
3	Wedge	ASTM A351 CF8 + 13Cr
4	Stem	ASTM A276 304
5	Bonnet Gasket	Graphite + SS304
6	Bonnet Bolt	ASTM A193 B7
7	Bonnet Nut	ASTM A194 2H
8	Bonnet	ASTM A216 WCB
9	Backseat	ASTM A182 304
10	Stem Packing	Reinforced Graphite
11	Handwheel	KTH330-08

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