D-FLSR Manual Gate Valve/Frac Valve

D-FLSR gate valves are modeled after the OEM Model FLS-R gate valve. All dimensions are interchangeable with the original Model FLS-R.

The DOYLES D-FLSR gate valve was designed for use as a manual valve in high-pressure, large bore applications.
A ball screw mechanism and lower stem are incorporated into the D-FLSR gate valve to minimize the actuating torque.
Bi-directional design provides flow direction flexibility and increased service life.
Sealing at the gate-to-seat and seat-to-body is metal-to-metal.
Two spring-loaded, pressure energized, non-elastomeric lip-seals provide maximum protection against intrusion of particle contaminants into the body cavity and seal areas, improving gate and seat service life, prevent damage to the body-to-seat seal face and improve valve performance at very low pressure.
Lower stem balances pressure thrust on upper stem to reduce operating torque, prevents body cavity pressure build-up during operation and provides position indication.
Spring-loaded, pressure energized, non-elastomeric stem seal covers full range of pressures, temperatures, and fluids.
Pressure-energized metal-to-metal bonnet seal.
Either stem can be back seated to allow stem seal replacement with valve under pressure.
Grease injection fittings located on the downstream side of the stem and the balancing stem backseat for safety.
Guaranteed to be 100% interchangeable with the OEM model.
DOYLES D-FLSR gate valves meet or exceeds API 6A standards.

D-FLSR Information

Size	# of Revolutions to Fully Open or Close	# of Revolutions to Crack Open	Input Torques Before Cracked Open ft-lb	Input Torques Before Cracked Open N-m	Input Torques After Cracked Open ft-lb	Input Torques After Cracked Open N-m
3-1/16”, 20K	15-3/4	3-1/3	110	149	20	27
4-1/16”, 15K	19	2-1/2	100	136	15	20
4-1/16”, 20K	21	4-1/2	175	237	20	27
5-1/8”, 10K	23-1/4	2-1/2	100	136	10	14
5-1/8”, 15K	24	3	175	237	15	20
6-3/8”, 10K	28-3/4	3	150	203	15	20
6-3/8”, 15K	15-1/4	2-1/2	400	542	20	27
7-1/16” 10K	31	2-1/2	180	244	15	20
7-1/16”, 15K	16-5/8	2-1/2	450	610	20	27
9”,5K	38-1/4	3	125	169	20	27
9”,10K	20	2	380	515	20	27

Nominal Size (in)	Rated Pressure (psi)	A	A	B	B	C	C	D	D	E	E	F	F	Weight	Weight
Size(In.)	Pressure	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	lb	kg
3-1/16	20,000	34.0	864	45.6	1158	53.2	1351	32.0	813	16.0	406	30.5	775	2145	973
4-1/16	15,000	41.7	1059	53.3	1354	66.6	1692	39.7	1008	15.9	404	29.0	737	1550	703
4-1/16	20,000	40.3	1024	54.8	1392	63.7	1618	37.8	960	18.8	478	35.5	902	3525	1599
5-1/8	10,000	42.4	1077	55.1	1400	69.5	1765	40.4	1026	15.9	404	29.0	737	1565	710
5-1/8	15,000	42.5	1080	57.5	1461	67.1	1704	40.5	1029	17.8	452	35.0	889	2980	1352
6-3/8	10,000	47.7	1212	62.4	1585	78.1	1984	45.7	1161	17.4	442	35.0	889	2505	1136
6-3/8	15,000	60.9	1547	72.9	1852	94.7	2405	58.9	1496	24.0	610	41.0	1041	5980	2712
7-1/16	10,000	49.7	1262	67.7	1720	79.2	2012	47.7	1212	18.9	480	35.0	889	3900	1769
7-1/16	15,000	62.1	1577	74.1	1882	97.2	2469	60.1	1527	24.0	610	41.0	1041	6190	2808
9	5,000	55.2	1402	64.9	1648	88.6	2250	53.2	1351	23.1	587	41.0	1041	4000	1814

Nominal Size	Rated Pressure	A	A	B	B	C	C	D	D	E	E	G	G	H	H	Weight	Weight
In.	PSI	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	lb	kg
4-1/16	20,000	40.3	1024	54.8	1392	63.7	1618	37.8	960	18.8	478	19.0	483	31.8	808	2800	1270
5-1/8	15,000	42.5	1080	57.5	1461	67.1	1704	40.5	1029	15.9	404	18.0	457	29.8	757	2750	1247
6-3/8	10,000	47.7	1212	62.4	1585	78.1	1984	45.7	1161	17.8	452	19.0	483	31.0	787	2900	1315
6-3/8	15,000	60.9	1547	72.9	1852	94.7	2405	58.9	1496	17.4	442	24.0	610	37.2	945	6300	2858
7-1/16	10,000	49.7	1262	67.7	1720	79.2	2012	47.7	1212	24.0	610	22.0	559	34.0	864	3600	1633
7-1/16	15,000	62.1	1577	74.1	1882	97.2	2469	60.1	1527	18.9	480	24.0	610	37.2	945	5400	2449
9	5,000	55.2	1402	64.9	1648	88.6	2250	53.2	1351	24.0	610	23.1	587	36.4	925	5700	2585
9	10,000	66.6	1692	79.1	2009	103.7	2634	64.6	1641	23.1	587	25.0	635	40.0	1016	7650	3470