Spring Cracking Pressure & Seat Material Options

Flange Insert Valve – Style F1, F6, FP

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures Standard Spring Material
FIV 1/2″ – 1-1/2″ PTFE
PVC
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV 2″ – 4″ PTFE
PVC
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
316 SS
FIV 6″ PTFE
PVC
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
Viton®
1/2 PSI 316 SS
FIV 1/2″ – 1-1/2″ 316
SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE

Viton®

1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV 1/2″ – 1-1/2″ C. Steel AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE

Viton®

1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
FIV 2″ – 4″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE

Viton®

1/8 PSI
1/2 PSI
1.5 PSI
316 SS
FIV 2″ – 4″ C. Steel AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
FIV 5″ – 20″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI 316 SS
FIV 5″ – 20″ C. Steel AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI 316 SS
FIV 1/2″ – 20″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
FIV 1/2″ – 20″ Alloy 400
MONEL®
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400
MONEL®
FIV 1/2″ – 20″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Wafer Insert Valve – Style WV

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
WIV 1/2″ – 1-1/2″ 316 SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
WIV 1/2″ – 1-1/2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
WIV 2″ – 4″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
WIV 2″ – 4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
WIV 1/2″ – 4″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
WIV 1/2″ – 4″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
WIV 1/2″ – 4″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Horizontal Vertical Flanged & Drilled – Style HV

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material 
HV 1″ – 1-1/4″ CF8M Stainless Steel (SS) AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
HV 1″ – 1-1/4″ WCB/WCC Carbon (CS) AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
HV 1-1/2″ – 2-1/2″ CF8M Stainless Steel (SS) AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
HV 1-1/2″ – 2-1/2″ WCB/WCC Carbon (CS) AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
HV 3″ – 10″ CF8M Stainless Steel (SS) AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI 316 SS
HV 3″ – 10″ WCB/WCC Carbon (CS) AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI 316 SS

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Bushing Valve – Style BU

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
BU 1/2″ – 1-1/2″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
BU 1/2″ – 1-1/2 C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
BU  2″-3″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
BU 2″-3″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
BU  1/2″-3″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
BU 1/2″-3″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
BU  1/2″-3″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Connector Valve – Style CN

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures Standard Spring Material
CN 1/2″ – 1-1/2″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
CN 1/2″ – 1-1/2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
CN 2″ – 4″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
CN 2″ – 4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
CN 1/2″ – 4″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
CN 1/2″ – 4″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
CN 1/2″ – 4″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Universal Low Pressure – Style U3

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
U3 3/8″ – 1-1/4″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
U3 3/8″ – 1-1/4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
U3 1-1/2″ – 2″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
U3 1-1/2″ – 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
U3 3/8″ – 2″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
U3 3/8″ – 2″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
U3 3/8″ – 2″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Universal High Pressure – Style U1

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
U1 3/8″ – 1-1/4″ 316 SS “Metal to Metal” 1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
U1 1-1/2″ 316 SS “Metal to Metal” 1/8 PSI
1/2 PSI
1.5 PSI
316 SS
U1 3/8″ -1-1/2″ Alloy 20
Alloy C-276
“Metal to Metal” 1/2 PSI Alloy C-276
U1 3/8″ -1-1/2″ Alloy 400 or MONEL® “Metal to Metal” 1/2 PSI Alloy 400 or MONEL®
U1 3/8″ -1-1/2″ Alloy B “Metal to Metal” 1/2 PSI Alloy B

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Mini-Check Valve – Style M1 – M8

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
MCV 1/8″ – 3/8″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
MCV 1/8″ – 3/8″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
MCV 1/8″ – 3/8″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
MCV 1/8″ – 3/8″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
MCV 1/8″ – 3/8″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS

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Sanitary Check Valve 3-A – Style 3S

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
3S 1″ – 4″ 316 SL/316 SS 3-A AFLAS®
3-A EPDM
3-A Kalrez®
3-A Silicone
3-A Viton®
3-A/USP Class VI AFLAS®
3-A/USP Class VI EPDM
3-A/USP Class VI Kalrez®
3-A/USP Class VI Silicone
3-A/USP Class VI Viton®
1/2 PSI
1.5 PSI
316 SS

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Sanitary Cartridge Valve – Style SC

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
SC 1/2″ – 1-1/2″ 316 SS AFLAS®
Buna-N
FDA AFLAS®
FDA Buna-N
EPDM/FDA EPDM
FDA Viton®
Kalrez®
“Metal to Metal”
Neoprene
PTFE
USP Class VI EPDM
USP Class VI Silicone
USP Class VI Viton®
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
SC 2″ – 4″ 316SS AFLAS®
Buna-N
FDA AFLAS®
FDA Buna-N
EPDM/FDA EPDM
FDA Viton®
Kalrez®
“Metal to Metal”
Neoprene
PTFE
USP Class VI EPDM
USP Class VI Silicone
USP Class VI Viton®
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS

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Sanitary Insert Valve – Style CB, TC

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
SIV 3/4″ – 2″ PTFE AFLAS®
Buna-N
FDA AFLAS®
FDA Buna-N
EPDM/FDA EPDM
FDA Viton®
Kalrez®
“Metal to Metal”
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
SIV 2-1/2″ – 4″ PTFE AFLAS®
Buna-N
FDA AFLAS®
FDA Buna-N
EPDM/FDA EPDM
FDA Viton®
Kalrez®
“Metal to Metal”
Neoprene
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS

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Butt Weld – Style B4

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
B4 1/2″ – 1-1/2″ 316L SS AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
B4 1/2″ – 1-1/2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
B4 2″ – 4″ 316L SS AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
B4 2″ – 4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
B4 1/2″ – 4″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
B4 1/2″ – 4″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
B4 1/2″ – 4″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Universal Socket Weld – Style US

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
US 3/8″ – 1-1/4″ 316L SS AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
US 3/8″ – 1-1/4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
US 1-1/2″ – 2″ 316L SS AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
US 1-1/2″ – 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
US 3/8″ – 2″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
US 3/8″ – 2″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
US 3/8″ – 2″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Tubing Check Valve – Style TV

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
TV 1/8″ – 1-1/4″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
TV 1/8″ – 1-1/4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
TV 1-1/2″ – 2″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
TV 1-1/2″ – 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS

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Tubing Check Valve – Flared – Style TF

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
TF 1/4″ – 1-1/4″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
TF 1/4″ – 1-1/4″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
TF 1-1/2″ – 2″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
TF 1-1/2″ – 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS

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Lined Pipe Insert – Style LP

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
LP 1″ – 3″ PTFE AFLAS®
EPDM
“Metal to Metal”
Buna-N
Kalrez®
Neoprene
Viton®
1/2 PSI 316 SS
LP 1″ – 3″ Alloy C-276 AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI 316 SS

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Horizontal Vertical Flanged & Drilled Fluoropolymer (PTFE) Lined – Style HT

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
HT 1″ – 2″ PTFE Lined
C. Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI FEP
Encapsulated
316 SS

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Straight-Sided Insert – Style SI

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
SI 1/2″ – 1-1/2″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
SI 1/2″ – 1-1/2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
SI 2″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
SI 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
SI 1/2″ – 2″ Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
SI 1/2″ – 2″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
SI 1/2″ – 2″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B

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Union Insert Valve – Style UV

Valve Style Size Range Body Materials Allowable Seat Materials Standard Cracking Pressures  Standard Spring Material
UV 1/2″ – 1-1/2″ 316 SS
Brass
AFLAS®
EPDM
“Metal to Metal”
PTFE
Buna-N
Kalrez®
Neoprene
Viton®
1/8
PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
UV 1/2″ – 1-1/2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
3.5 PSI
316 SS
UV 2″ 316SS
Brass
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
UV 2″ C.
Steel
AFLAS®
Buna-N
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/8 PSI
1/2 PSI
1.5 PSI
316 SS
UV 2″” Alloy 20
Alloy C-276
AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy C-276
UV 2″ Alloy 400 or MONEL® AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy 400 or MONEL®
UV 2″ Alloy B AFLAS®
Buna-N
EPDM
Kalrez®
“Metal to Metal”
Neoprene
PTFE
Viton®
1/2 PSI Alloy B