Butterfly Valve 303

DN400-2400 PN10-25

Own production

Certificates and full package of documents

Production time from 20 days

Technical Specifications

Nominal diameter — DN 40-2400
Nominal pressure — PN10, PN16, PN25
Medium temperature — -15 °C ... +110 °C
Types of Valve End Connections — Flanged, wafer, lug
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	D, mm	D1, mm	L, mm	n-ød
400	580	525	102	4-M27
450	640	585	114	4-M27
500	715	650	127	4-M30
600	840	770	154	4-M33
700	910	840	165	4-M33
800	1025	950	190	4-M36
900	1125	1050	203	4-M36
1000	1255	1170	216	4-M39
1100	1355	1270	254	4-M39
1200	1485	1390	254	4-M45
1400	1685	1590	279	4-M45
1500	1820	1710	318	4-M52
1600	1930	1820	318	4-M52
1800	2130	2020	356	8-M52
2000	2345	2230	406	8-M56

Tabulated data for DN2100 diameters is available upon request

Product Description

Butterfly Valve (Type 303) designed for regulating and shutting off the flow of working media.

A distinctive feature of this model compared to type 301 is the larger range of diameters and shortened face-to-face length, which allows installation in limited-space conditions. Additionally, the valve design features reduced weight.

Design features of the model:

Shortened face-to-face length
Replaceable seat sealing
Lightweight construction

Sealing materials:

🔹 EPDM, NBR

Valve bodies can be manufactured from various materials depending on the application:

🔹 Ductile iron
EN-GJS-400-15 / GGG40

🔹 Carbon steel
A216 WCB (1.0619, GP240GH)
A216 WCB (1.0619, GP240GH) + EPDM

Valve discs can be made from the following materials:

🔹 Stainless steels (corrosion-resistant)
A351 CF8 (1.4308) / AISI 304 / A182 F304 (1.4301)
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)

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