MODEL – ATS 21

DESIGN FEATURES

IBR/Non-IBR
Replaceable all parts & easy maintenance
The seat has a metal & soft seating arrangement.
Pressure limits as per your requirements.
Hard face for high pressure & high temperature.
Material of construction makes in quality casting also as per your requirements.
Trims make with certified bar stock (forged) and quality casting also as per your requirements.
High quality, well design well performance-certified spring.

TECHNICAL FEATURES

Size 25mm x 50mm (1” x 2”) to 250mm x 350mm (10” x 14”) also as per your requirements.
Design as per standards API-520/API-526/API-527.
Also applicable standard is ASME BPVC section VII division I.
Standards as per ASME B 16.5& ASME B 16.34.
Pressure rating 150, 300, 600, 900,1500, 2500, Table-H & Table-E class.

DIMENSIONS & TECHNICAL DETAILS

Valve Size Inlet x Outlet	A ±3.0	B ±3.0	H ±3.0
25 x 50	115	105	430
40 x 50	120	124	460
40 x 80	124	130	530
50 x 80	124	133	540
80 x 100	162	155	590
100 x 150	229	181	830
150 x 200	240	240	990
200 x 250	280	276	1400
250 x 350	395	385	1600

MATERIAL LIST

No.	Part Name	Type of Material
1	Body	ASTM A 216 GR. WCB, ASTM A 351 GR. CF8/CF8M/CF3/CF3M
2	Bonnet (Open/Close)	ASTM A 216 GR. WCB, ASTM A 351 GR. CF8/CF8M/CF3/CF3M
3	Nozzle	ASTM A 351 CA15/CF8/CF8M /CF3 /CF3M
4	Nozzle Ring
5	Disc	SS410/304/304L/316/316
6	Disc Holder	ASTM A 351 CA15/CF8/CF8M /CF3 /CF3M
7	Guide	ASTM A 351 CA15/CF8/CF8M /CF3 /CF3M
8	Stem	SS 410/304/304L/316/316L
9	Stem Nut	M.S./SS304/316
10	Lock Screw	SS 410/304/304L/316/316L
11	Cap(Open/Close)	ASTM A 216 GR. WCB, ASTM A 351 GR. CF8/CF8M/CF3/CF3M
12	Spring Washer(Lower & Upper)	M.S./SS 410/304/304L/316/316L
13	Setting Spring	SPRING STEEL/STAINLESS STEEL/ALLOY STEEL
14	Adjusting Screw	SS 410/304/304L/316/316L
15	Adjusting Screw Nut	SS 410/304/304L/316/316L
16	Lever & Fork	ASTM A 216 GR. WCB, A 351 CF8, CF8M, SG IRON
17	Thrust Bearing	AS PER STANDARD MFG.
18	Studs & Nuts	B7/B8/B8M/L7 & 2H/8/8M/7
19	Gaskets	CAF/GRAPHITE/PTFE

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