Valves and Chokes | Cast Steel Ball Valves

Destination:

This valves are used as tight shut-off fittings for a complete or partial shutting-off into transport and distribution installations.
Working medium: water, gases, petroleum products and other similar fluids, with low corrosion, exclusive hydrogen, mixtures of hydrogen, as well as aggressive mediums with sulphur or sulphuretted hydrogen.

Contents

1. Connecting flange 410-620 / SR ISO 9477
2. Body 410-620 / SR ISO 9477
3. Sphere 42CrMo 4/ SR EN 10083
4. Seat PTFE
5. Rod IC45 / SR EN 10083
6. Spacer CuSn12 / Bronze
7. Stuffing box IC45 / SR EN 10083
8. Cam 42CrMo4 / SR EN 10083
9. Lever 42CrMo4 / SR EN 10083
10. Washer S235JR / SR EN 10027
11. Sealing pack nonasbestos
12. “O”-ring rubber
13. “O”-ring rubber
14. Nut IC45 / SR EN 10083
15. Washer SR 7666-2
16. Stud bolt STAS 8121 / 2

Technical and constructive characteristics

Pn bar	Dn mm in		Dred mm	L mm	d1 mm	d2 mm	n x d3	b mm	H (inf) mm	B mm	Net weight
25	50	2 1/16	-	315(295)	165	125	4 x d18	20	135	230	14,200
	65	2 9/16	49	241	185	145	8 x d18	24	146	230	18,200
	80	3 1/8	64	283	210	168,5	8 x d22	28	155	320	25,500
140	50	2 1/16	-	295	165	127	8 x d18	34	145	290	44,00
	80	3 1/8	-	359	230	168,5	8 x d22	40	195	320	86,00

Constructive characteristics of the main components:

About constructive features, the valves include:

• Intermediary body (one or two pieces)
• Connecting flange
• Closing element: sphere

Body-flange sealing, achieved on cone by means of sealing rings ( PTFE seat).
The actuating about the closing element (sphere) achieved by means of lever and nonascending stem.
Packing stem: nonasbestos gaskets.

Passing direction: two-way
Mounting position: indifferent
Current sealing: carbon steel-PTFE
On request sealing: stainless steel-PTFE

Working and testing regime

Nominal pressure, bar	Working pressure, bar	Testing pressure, bar
		Strength	Tightness
25	25	1,5 x PN (38 bar)	1,1 x PN (27,5 bar)
140	140	2 x PN (280 bar)	1x PN (140 bar)