Ball Valve 408

DN25-250 PN16-63

Guarantee

Comprehensive Documentation

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Technical Specifications

Nominal diameter DN 25-250
Nominal pressure PN16-PN63
Medium temperature -60 °C ... +240 °C
Types of Valve End Connections Flanged, between Flanges
Leakage Class «А»
Mounting Position Any, except for downward-driven devices
Types of Control — manual (lever) 
— manual (handwheel)
— manual (gearbox)
— pneumatic actuation 
— electric actuation
Warranty Period 12 months
Average Service Life 10 000 cycles
Guaranteed Service Life Not less than 5000 cycles

Technical Drawings and Dimensions

Nominal diameter PN16

Table of Basic Dimensions

DN, mm	L, mm	D, mm	D1, mm	D2, mm	f, mm	b, mm	n-ød, mm
15	130	95	65	45	2	14	4-14
20	130	105	75	58	2	16	4-14
25	140	115	85	68	2	18	4-14
32	165	140	100	78	2	18	4-18
40	165	150	110	88	3	20	4-18
50	200	165	125	102	3	22	4-18
65	222	185	145	122	3	24	4-18 / 8-18
80	241	200	160	138	3	24	8-18
100	280	220	180	158	3	26	8-18
125	320	250	210	188	3	28	8-18
150	360	285	240	212	3	28	8-22
200	457	340	295	268	3	30	12-22
250	533	405	355	320	3	31	12-26

Product Description

Ball Valve Model 408 is designed for shutting off the flow of the working medium.

A characteristic feature of this model is its dismantling (split) body and the option of manufacturing it in a two-piece version. The valve is available in a full bore or reduced bore design. The disassemblable construction allows for easy replacement of seals and the ball, which significantly facilitates valve maintenance.

Design Features:

Dismantling (split) body (2-piece construction)
Full bore or reduced bore design
Easy access to internal valve components

Body Materials:

🔹 Carbon steels

ASTM A216 WCB (1.0619, GP240GH)
ASTM A105 (1.0460)

🔹 Stainless steels (corrosion-resistant)

ASTM A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
ASTM A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
A351 CF3 (1.4306) / AISI 304L / A182 F304L
A351 CF3M (1.4409) / AISI 316L (1.4404)
AISI 316Ti (1.4571)

🔹 Special steels (duplex)

Duplex 2205 (UNS S31803/S32205, 1.4462)
Super Duplex 2507 (UNS S32750 / 1.4410)

Ball Materials:

ASTM A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
ASTM A351 CF8M (1.4408) / AISI 316 / A182 F316 (1.4401)
A351 CF3 (1.4306) / AISI 304L / A182 F304L
A351 CF3M (1.4409) / AISI 316L (1.4404)

Seat Materials:

PTFE
RPTFE
PEEK
Metal-to-metal

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