Butterfly valve 308

DN50-DN350, PN3-7

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Comprehensive Documentation

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Technical Specifications

Nominal diameter DN50-300
Nominal pressure PN3-PN7
Medium temperature -60 °C ... +180 °C
Types of Valve End Connections Wafer-type, lug-type
Leakage Class «А»
Mounting Position Horizontal, vertical, except with the actuator facing downward
Types of Control — Manual (lever, handwheel, gearbox)
— Pneumatic actuator 
— Electric actuator
Warranty Period 12 months
Average Service Life 10 000 cycles
Guaranteed Service Life Not less than 5000 cycles

Technical Drawings and Dimensions

Nominal pressure PN 3–7

Basic dimensions table

DN	Dn, mm	L, mm	PN, MPa (Bar)
50	57	42	0.7
65	72	46	0.7
80	80	46	0.7
100	102	56	0.6
125	130	70	0.5
150	153	71	0.5
200	203	87	0.4
250	255	111	0.3
300	312	132	0.3
350	358	132	0.3

Product Description

Butterfly Valve Model 308 is designed for shutting off the flow of working media in industrial and chemically aggressive installations.

Design features of the model:

Short face-to-face length (compact design)
Replaceable sealing
Lightweight construction

Thanks to various material versions of the body (UPVC, PVDF, PP) and sealing (EPDM, VITON), the valve can operate in a wide temperature range from –60°C to +180°C and at a working pressure of up to 0.7 MPa.

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