20inch ANSI Class 150 Serrated Raised Face Manual Sandwich Valve

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: 20′′x ANSI#150
• Material: Carbon Steel
• Connection: Flange
• Installation Direction: Bi-Directional Installation
• ANSI Class: 150
• Suit for: Lock-O-Ring Flanges
• Flange Face Type: RF Type
• Usage: Hot Tap and Line Stop
• Operation: Manual Operation
• Transport Package: Wooden Case
• Specification: 20′′
• Trademark: GREAT WALL
• Origin: China

Product Description

 

Product Description

SANDWICH VALVE
 

Product Introduction: 

TDW SANDWICH Valves are designed for use with Hot Tapping Machine and Plugging machines and fittings with LOCK-O-RING Flanged during hot tapping and plugging operation .

SANDWICH Valves are supplied to match ANSI Class 150, 300, 400 or 600 flanges . 




Pressure Test

 

1. The list of sizes of Sandwich Valve : 
 

S/N	Description	Size		ASME Class	Operation
		inch	mm
1	Sandwich Valve	4''	100	Class 150, 300, 400, 600	Manual
2	Sandwich Valve	6''	150	Class 150, 300, 400, 600	Manual
3	Sandwich Valve	8''	200	Class 150, 300, 400, 600	Manual
4	Sandwich Valve	10''	250	Class 150, 300, 400, 600	Manual
5	Sandwich Valve	12''	300	Class 150, 300, 400, 600	Manual
6	Sandwich Valve	16''	400	Class 150, 300, 400, 600	Manual
7	Sandwich Valve	18''	450	Class 150, 300, 400, 600	Manual
8	Sandwich Valve	20''	500	Class 150, 300, 400, 600	Manual
9	Sandwich Valve	22''	550	Class 150, 300, 400, 600	Manual
10	Sandwich Valve	24''	600	Class 150, 300, 400, 600	Manual/Hydraulic
11	Sandwich Valve	26''	650	Class 150, 300, 400, 600	Manual/Hydraulic
12	Sandwich Valve	30''	750	Class 150, 300, 400, 600	Manual/Hydraulic
13	Sandwich Valve	34''	850	Class 150, 300, 400, 600	Manual/Hydraulic
14	Sandwich Valve	36''	900	Class 150, 300, 400, 600	Manual/Hydraulic
15	Sandwich Valve	40''	1000	Class 150, 300, 400, 600	Manual/Hydraulic
16	Sandwich Valve	42''	1050	Class 150, 300, 400, 600	Manual/Hydraulic

Customer Visit

Project Case

 

Packaging & Shipping

Fabricated Fittings for TDW

 

FAQ

Q1. What is the material of your Sandwich Valve ?

A1. The material of our Sandwich Valve is Q345B or Q345R Carbon Steel as per standard GB/T1591-2008 .

Q345B is the good material which is widely used for pressurized vessel in China .

 

Q2. Why you can't make Sandwich Valve with the material ASTM A694 ?

A2. ASTM A694 is the American standard steel which is not widely used in China and the annual usage is very small.

But Q345B Steel is widely used in China for Sandwich Valve, Stopple Fitting and etc and annual usage is big.

So it's impossible for us to purchase this American standard steel to make Sandwich Valve.

Q3:What about your warranty period ? Can I return goods to you if we are not satisfied ?

A3:We provide three year warranty for the quality of our products .
Sandwich Valve should be fixed on the pipeline as per our installation instruction .
No responsibility will be taken for damage due to incorrect installation .
Returns will be only accepted only if our product provde to be defective .