Tubing O.D. Size Size Code A Hex* B C Orifice Diameter 1/8 A 2.16 7/8 0.69 0.348 1/4 B 2.16 7/8 0.89 0.348 3/8 C 2.16 7/8 0.91 0.348 1/2 D 2.47 1-1/8 1.04 0.464 5/8 E 2.63 1-1/4 1.20 0.464 3/4 F 2.92 1-1/2 1.38 0.593 7/8 G 3.34 1-7/8 1.40 0.890 1 H 3.34 1-7/8 1.46 0.890 1-1/4 I 3.48 2-1/4 1.58 1.135 1-1/2 J 3.81 2-1/2 1.79 1.385 2 K 5.09 3-1/2 2.19 2.025 NOTES (DIMENSIONS TABLE) *May be larger and/or round.Consult factory for more information.

316 Stainless Steel (SS) Brass (BR) Carbon Steel (CS)

SIZE PART NUMBER ALL MATL 1/8 TFA 5.5 oz. 1/4 TFB 6.6 oz. 3/8 TFC 7.2 oz. 1/2 TFD 13 oz. 5/8 TFE 1.8 lb. 3/4 TFF 2.3 lb. 7/8 TFG 2.7 lb. 1 TFH 3.0 lb. 1-1/4 TFI 5.7 lb. 1-1/2 TFJ 7.8 lb. 2 TFK 15 lb. Valve weights are approximate.

37º Flared Tubing Spring Check Valve

The Tubing Check Valve-Flared (TF) is a three piece constructed check valve with 37º flared end fittings that conform to SAE J514 & ISO 8434-2. These valves are designed for maximum flow with minimal pressure drop. Many valves in this series can be supplied with B16.34 certification.

Size & Dimension

Tubing O.D. Size	Size Code	A	Hex* B	C	Orifice Diameter
1/8	A	2.16	7/8	0.69	0.348
1/4	B	2.16	7/8	0.89	0.348
3/8	C	2.16	7/8	0.91	0.348
1/2	D	2.47	1-1/8	1.04	0.464
5/8	E	2.63	1-1/4	1.20	0.464
3/4	F	2.92	1-1/2	1.38	0.593
7/8	G	3.34	1-7/8	1.40	0.890
1	H	3.34	1-7/8	1.46	0.890
1-1/4	I	3.48	2-1/4	1.58	1.135
1-1/2	J	3.81	2-1/2	1.79	1.385
2	K	5.09	3-1/2	2.19	2.025

NOTES (DIMENSIONS TABLE)*May be larger and/or round.Consult factory for more information.

Available Materials

316 Stainless Steel (SS)
Brass (BR)
Carbon Steel (CS)

Pressure Temperature Table

Line Size	Non-Shock Pressure-Temperature Rating
	Stainless Steel (SS)	Carbon Steel (CS)	Brass (BR)
1/8" - 1/2"	7700 PSIG @ 100 °F	6000 PSIG @ 100 °F	3000 PSIG @ 100 °F
5/8" - 3/4"	6000 PSIG @ 100 °F	5000 PSIG @ 100 °F	1600 PSIG @ 100 °F
7/8"	5400 PSIG @ 100 °F	5000 PSIG @ 100 °F	1600 PSIG @ 100 °F
1"	5400 PSIG @ 100 °F	4500 PSIG @ 100 °F	1600 PSIG @ 100 °F
1-1/4"	3600 PSIG @ 100 °F	4000 PSIG @ 100 °F	1600 PSIG @ 100 °F
1-1/2"	2400 PSIG @ 100 °F	3000 PSIG @ 100 °F	1600 PSIG @ 100 °F
2"	1800 PSIG @ 100 °F	2000 PSIG @ 100 °F	1600 PSIG @ 100 °F

Seat material and spring material selection may limit the recommended service temperature.
See seat ratings, spring ratings, and body material ratings for their respective recommended service temperatures.
Consult the factory for reduced P-T rating above 100 °F. Standard spring material is 316 Stainless Steel.

Flow Data

PRESSURE DROP PSI

Size	Cv
1/8	0.08
1/4	0.7
3/8	1.6
1/2	3.1
5/8	4.3
3/4	5.4
7/8	8.5
1	11.5
1-1/4	16.0
1-1/2	29.0
2	60.0

FOR WATER AT 72°F

WATER FLOWRATE - GPM

Note: All flow curves and Cv values presume the valves are fully open with 1/2 PSI cracking pressure springs. Consult the factory for more information.

Valve Weights

SIZE	PART NUMBER	ALL MATL
1/8	TFA	5.5 oz.
1/4	TFB	6.6 oz.
3/8	TFC	7.2 oz.
1/2	TFD	13 oz.
5/8	TFE	1.8 lb.
3/4	TFF	2.3 lb.
7/8	TFG	2.7 lb.
1	TFH	3.0 lb.
1-1/4	TFI	5.7 lb.
1-1/2	TFJ	7.8 lb.
2	TFK	15 lb.

Valve weights are approximate.

Seat & Cracking Pressure Options

Valve Style	Size Range	Body Materials Other Options	Allowable Seat Materials Other Options	Standard Cracking Pressures Other Options More Info.	Standard Spring Material More Info.
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"	316 SS 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