Could any body please tell me the socket weld size limit gate valve class 150.?

I mean that is available in sizes 2 "?

Most welding intake valves of the door not covered by the class 150, but Class 600 either match or use a class called 800. For an example of these on the website below. Typically, these valves are made in sizes up to 2 inches nominal. Above this size are either butt welded or flanged. If you do a search for making welding gate valve, you can find other examples if desired.

HENRY VALVE 02SW-1 AMMONIA FLANGE UNION 1" SOCKET WELD $49.99

Vogt Piston Check 1/2" 800 lb Socket Weld Ends SW-701 $35.99

BONNEY FORGE 3/4" GLOBE VALVE CLASS 800 SOCKET WELD NEW $39.00

LOT OF 3 316 SS 3/4" SOCKET WELD FITTINGS 2 UNION 1 TEE $24.99

2 BUTT/SOCKET WELD S40 REDUCER/ADAPTER 304 SS 2" X 3/4" $19.99

VOGT Socket Weld Globe Valve 174 800# A105 New $57.18

BONNEY FORGE 1" INCH GLOBE VALVE CLASS 800 SOCKET WELD $100.00

BONNEY FOR 1" INCH GLOBE VALVE CLASS 1500 SOCKET WELD $120.00

APOLLO 1" SOCKET WELD 316 SS BALL VALVE 1000LB WOG USA $39.00

4 PENN 9Y7N 316/316L SS SOCKET WELD UNION COUPLINGS $50.00

Vogt 316SS 1/2" Socket Weld Cl800 Gate Valve 5Pcs $100.00

DSI 2" Socket Weld 316SS Cl800 Piston Check Valve 2Pcs $100.00

PAIR OF 2" GATE VALVES SOCKET WELD TO THREADED STEEL $250.00

NEW 3" LASCO SCH80 SOCKET WELD DARK GRAY UNIONS $4.99

MCF 2" GO SOCKET WELD VALVE NEW $29.99

17 NEW PIPE FITTINGS 45 ELBOW 90 TEE SOCKET WELD 1/2 SS $69.00

Lot of 1-1/2" CS C 7775 -2-3-A Socket Weld SP BV L3 $9.99

4 NEW 3M SOCKET WELD 304 304L SS 1 1/2" ELBOW UNION $39.00

Lot of 1-1/4" 1500# WOG SS Socket Weld LH Ball Valve L3 $9.99

Nor-Cal HPS MDC Vacuum Socket Weld Flange, NW-40-SW $9.95

Conval Inc STK-1 Socket Weld 1/2" Fire Safe Valve $325.00

3" 316 Stainless Steel Socket Weld Coupling $12.95

NEW JAMESBURY 316 SS BALL VALVE 1 1/2" SOCKET WELD $65.00

1 1/2" 304L Stainless Socket Weld Coupling Fitting Lot4 $69.99

NEW TCI SWING CHECK VALVE 316 SS 2" SOCKET WELD WP 200 $65.00

2 PCS. 2" SOCKET WELD 316 STAINLESS 45 ELBOW 3000 PSI $35.00

LOT OF 3 MISC. SOCKET WELD NPT REDUCER/ADAPTER 304 SS $40.00

2 SS 316 STAINLESS STEEL 1" SOCKET WELD FLANGE 150 PSI $49.99

2 SS 316 STAINLESS STEEL 1" SOCKET WELD FLANGE 300 PSI $62.50

Swagelok SS 1/8" Socket Weld Gland, SS-2-VCR-3 $6.75

BONNEY FORDGE 1/2" GATE VALVE 800 SOCKET WELD TO THREAD $85.00

4 BUTT/SOCKET WELD S40 OFFSET REDUCER 316 SS 2" X 3/4" $99.00

SARCO 52083 CT Steel Wye Y Strainer 1" Socket Weld ½"Dr $24.99

2 - 1-1/2" Socket Weld Flange Class 150 WELDBEND SHARON $20.00

2" 316 Stainless Steel Union Socket Weld Fitting $20.00

2" 316 Stainless Steel Coupling Socket Weld Fitting $10.00

2" 316 Stainless Steel Elbow 45 Socket Weld Fitting $15.00

6 NEW 304L STAINLESS PIPE TEE 1 1/2" SOCKET WELD 3000# $59.00

4 NEW JAMESBURY BALL VALVES 316SS 1" SOCKET WELD 1000 $169.00

2 NEW BONNEY FORGE 3/4" GATE VALVE 800 SOCKET WELD WL11 $25.00

2" SS BALL VALVE W/ STEEL CASING SOCKET WELD FITTINGS $100.00

1 1/4" 3000# SOCKET WELD 90 ELBOW A105 FORGED STEEL 056 $5.44

2" 3000 PSI SOCKET WELD TEE A105 FORGED STEEL 057 $15.10

2 SS 304 STAINLESS STEEL 1" SOCKET WELD FLANGE 150 PSI $25.00

BONNEY FORGE 2" GATE VALVE CLASS 800 SOCKET WELD NEW! $100.00

NEW JAMESBURY BALL VALVE 316 SS 1 1/2" SOCKET WELD $89.00

Canvil 3/4" CL800 Socket Weld Gate Valve 2Pcs $25.00

4" PVC Valve - Spears Utility Ball Valve - Socket Weld $125.00

BONNEY FORGE 3/4" GATE VALVE CLASS 800 SOCKET WELD NEW! $95.00

BONNEY FORGE 3/4" GATE VALVE SOCKET WELD TO THREAD SS $120.00

1" HANSEN TECHNOLOGIES SOCKET WELD 400PSI AMMONIA VALVE $115.00

Apollo 83R-204-01 Socket Weld 3/4" Steel Ball Valve New $70.00

25 Swagelok Cajon 1/2" Tube Socket Weld Tees SS-8-TSW-3 $15.00

KJT SS 1/2" Cl800 Socket Weld Gate Valve 2Pcs $60.00

LOT OF 2 BONNEY FORGE 2" GATE VALVES SOCKET WELD TO NPT $175.00

TRACTOR LIFT ARM BALL SOCKET "SPEECO" TRACTOR LIFT ARM BALL SOCKET A = 3-1/8'', B = 1-1/8'', C = 2-3/4, D = 3/4'', E = 1-3/4'', F = 3-1/8''. For Category 2 1-1/8" Pin hole 1-3/4" Length thru bore...

Bothwell 1-1/4 3000lb Cap 304ss Socket Weld Fitting $22.74 Type 304/316 3000 Lb. Stainless Steel Socket Weld Fittings Type: Cap Fitting Size: 1-1/4 End Connections: Socket Weld Material: Stainless Steel - 304 Pressure Rating (psi): 3000...

Bothwell 1-1/2 3000lb Cap 304ss Socket Weld Fitting $28.98 Type 304/316 3000 Lb. Stainless Steel Socket Weld Fittings Type: Cap Fitting Size: 1-1/2 End Connections: Socket Weld Material: Stainless Steel - 304 Pressure Rating (psi): 3000...

Jomar 101-998 Stainless Steel 2 Socket Weld T/S-CS 2002N-SS-DUE Full Port Five Piece Double Union Carbon Steel Ball Valve with Lever Handle and Hostaflon-TFM 1600 Modified Seats 101-998 2" Socket Weld T/S-CS 2002N-SS-DUE Full Port Five Piece Double Union Carbon Steel Ball Valve with Lever Handle and Hostaflon-TFM 1600 Modified SeatsDouble Union Ball Gas Shut-Off Valves are UL approved for flammable liquids including liquid propane, LP gas, natural and manufactured gas and anhydrous ammonia. Designed for industrial applications of steam, water, oil, gas and corrosive materials.ISO...

Weld-In Ball/Thread Socket $66.50 Weld-In Ball/Thread Socket. Click here to view the product catalog detail page: http://www.howardscustoms.com/catalog/VTwin_2-Classic_765.pdf. This is a new item for Harley Davidson and VTwin motorcycles. Call 1-888-271-0229 to order....