Gestra Bellow Sealed Globe Valve GAV 63F-T, GAV 64F-T, GAV 65F-T, GAV 66F-T and GAV 63F, GAV 64F, GAV 65F, GAV 66F  (PN 16 to PN 40) (DN 15 to DN 250)

Description

A range of sealed, in-line stop valves having twin ply bellows as standard throughout the range. These valves have been designed for use on steam, gas, liquid, condensate and water systems. The standard GAV-T range comes complete with throttling plug and locking device. The alternative GAV range has a flat disc. The following tables clearly display the available sizes, pipeline connections and available options for the standard and alternative ranges.

Standards 

The product fully complies with the requirements of the Pressure Equipment Directive (PED) and carries the mark when so required.

Pressure Temperature Limit

GAV 63F and GAV 63F-T (PN 16)

Nominal Pressure : PN 16 (16 Bar)

Max. Pressure : 16 bar g @ 120 °C (232.1 psi g @ 248 °F) 

Max. Temperature : 300 °C @ 9.6 bar g (572 °F @ 139.2 psi g) 

Max. Operating Pressure :

• Soft seat 11.8 bar g @ 230 °C (171.1 psi g @ 446 °F)
• Metal seat 13 bar g @ 195 °C (188.5 psi g @ 383 °F)

Max. Operating Temperature : 

• Soft seat 230 °C @ 11.8 bar g (446 °F @ 171.1 psi g)
• Metal seat 300 °C @ 9.6 bar g (572 °F @ 139.2 psi g)

GAV 64F, GAV 65F and GAV 64F-T, GAV 65F-T (PN16)

Nominal Pressure : 16 Bar (PN 16)

Max. Pressure : 16 bar g @ 120 °C (232.1 psi g @ 248 °F) 

Max. Temperature : 16 bar g @ 120 °C (232.1 psi g @ 248 °F) 

Max. Operating Pressure : 

• Soft seat :  14.2 bar g @ 230 °C (206 psi g @ 446 °F) 
• Metal seat : 14.7 bar g @ 200 °C (213.2 psi g @ 392 °F) 

Max. Operating Temperature : 

• Soft seat : 230 °C @ 14.2 bar g (446 °F @ 206 psi g)
• Metal seat : 350 °C @ 11.2 bar g (662 °F @ 162.4 psi g)

GAV 64F, GAV 65F and GAV 64F-T, GAV 65F-T (PN 25)

Nominal Pressure : 25 Bar (PN 25)

Max. Pressure : 25 bar g @ 120 °C (362.6 psi g @ 248 °F) 

Max. Temperature : 350 °C @ 17.5 bar g (662 °F @ 253.8 psi g) 

Max. Operating Pressure : 

• Soft seat :  22.3 bar g @ 230 °C (323.4 psi g @ 446 °F) 
• Metal seat : 22.5 bar g @ 221 °C (326.3 psi g @ 429.8 °F)  

Max. Operating Temperature : 

• Soft seat : 230 °C @ 22.3 bar g (446 °F @ 323.4 psi g) 
• Metal seat : 350 °C @ 17.5 bar g (662 °F @ 253.8 psi g) 

GAV 66F and GAV 66F-T (DIN) (PN 40, DN 15 - DN 150)

Nominal Pressure : 40 Bar (PN 40)

Nominal Diameter : DN 15 - DN 150 (1/2" - 6")

Max. Pressure : 40 bar g @ 50 °C (580 psi g @ 122 °F)  

Max. Temperature : 400 °C @ 23.8 bar g (752 °F @ 345.2 psi g)  

Max. Operating Pressure : 

• Soft seat :  27 bar g @ 230 °C (391.6 psi g @ 446 °F) 
• Metal seat : 31.1 bar g @ 238 °C (451.1 psi g @ 460.4 °F) 

Max. Operating Temperature : 

• Soft seat : 230 °C @ 27 bar g (446 °F @ 391.6 psi g) 
• Metal seat : 400 °C @ 23.8 bar g (752 °F @ 345.2 psi g) 

Materials 

GAV 63 F-T and GAV 63F

Body:

• Cast Iron (EN-GJS-250)

Bonnet:

• SG Iron (EN-GJS-400-18-LT)

Seat:

• Stainless Steel AISI 420

Disc:

• Stainless Steel DIN 17440 X30 Cr13

Bellows:

• Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2

Locking Screw:

• DN 15 - DN 80 : Steel M8 x 14 mm BS 3692 Gr. 8.8 
• DN 100 - DN 150 : Steel M8 x 20 mm BS 3692 Gr. 8.8 
• DN 200 - DN 250 : Steel M12 x 20 mm BS 3692 Gr. 8.8 

GAV 64F-T, GAV 65F-T and GAV 64F, GAV 65F 

Body:

• SG iron (EN-GJS-400-18-LT)

Bonnet:

• SG Iron (EN-GJS-400-18-LT)

Seat:

• Stainless Steel AISI 420

Disc:

• Stainless Steel DIN 17440 X30 Cr13

Bellows:

• Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2

Locking Screw:

• DN 15 - DN 80 : Steel M8 x 14 mm BS 3692 Gr. 8.8 
• DN 100 - DN 150 : Steel M8 x 20 mm BS 3692 Gr. 8.8 
• DN 200 - DN 250 : Steel M12 x 20 mm BS 3692 Gr. 8.8 

GAV 66F-T and GAV 66F  (DIN)

• Body:
• Cast steel 1.0619+N (GSC 25N)

Bonnet:

• Steel (DN15 - DN80) DIN 17243 C 22.8
• Steel (DN100 - DN200) 1.0619+N (GSC 25N)

Seat:

• Stainless Steel AISI 420

Disc:

• Stainless Steel DIN 17440 X30 Cr13

Bellows:

• Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2

Locking Screw:

• DN 15 - DN 80 : Steel M8 x 14 mm BS 3692 Gr. 8.8 
• DN 100 - DN 150 : Steel M8 x 20 mm BS 3692 Gr. 8.8 
• DN 200 - DN 250 : Steel M12 x 20 mm BS 3692 Gr. 8.8 

GAV 66F-T and GAV 66F  (ANSI)

Body:

• Cast steel ASTM A 216 WCB

Bonnet:

• Forged steel (DN15- DN80) ASTM A 105
• Cast steel (DN100- DN200) ASTM A 216 WCB

Seat:

• Stainless Steel AISI 420

Disc:

• Stainless Steel DIN 17440 X30 Cr13

Bellows:

• Stainless steel WS 1.4571 EN10028-7 X6 CrNiMTi 17-12-2

Locking Screw:

• DN 15 - DN 80 : Steel M8 x 14 mm BS 3692 Gr. 8.8 
• DN 100 - DN 150 : Steel M8 x 20 mm BS 3692 Gr. 8.8 
• DN 200 - DN 250 : Steel M12 x 20 mm BS 3692 Gr. 8.8 

GAV 63F-T and GAV 63F (PN 16)
GAV 64F-T, GAV 65F-T and GAV 64F, GAV 65F (PN 16, PN 25)
GAV 66F-T and GAV 66F (DIN) (PN 25 (DN 200), PN 40  (DN 15-DN 15))

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