Why are Y-strainers required in fire pump suction lines?

NFPA 20 requires Y-strainers at the suction connection of fire pumps to protect the pump impellers from debris, stones, and solid objects that could cause cavitation, impeller damage, or complete blockage. The strainer must have adequate open area (at least 4x the pipe cross-section) to minimize pressure loss while effectively filtering debris.

Why are Y-strainers required in fire pump suction lines?

NFPA 20 requires Y-strainers at the suction connection of fire pumps to protect the pump impellers from debris, stones, and solid objects that could cause cavitation, impeller damage, or complete blockage. The strainer must have adequate open area (at least 4x the pipe cross-section) to minimize pressure loss while effectively filtering debris.

How do I order and what are the delivery terms?

Contact our export sales team via WhatsApp (+91 97732 78770) or email (supremevalvesindia@gmail.com) with your valve specification (type, size, pressure rating, material, quantity). We enquiry origin Ahmedabad or CIF to Jeddah, Dubai, Doha, and Kuwait. Standard delivery is 3-5 weeks for in-stock items, 6-8 weeks for custom manufacture. Full export documentation including Form A/COO, commercial invoice, and packing list provided.

Is this valve suitable for the Middle East climate and conditions?

Yes. Supreme Valves exports extensively to Saudi Arabia, UAE, Qatar, Kuwait, Oman, and Bahrain where temperatures regularly exceed 45 deg C and desert conditions create high dust and sand exposure. Our valves are specified with materials and coatings suitable for extreme ambient temperatures, including FBE (Fusion Bonded Epoxy) coating for corrosion resistance and EPDM seals rated for high-temperature service. All valves are factory-tested before dispatch to ensure reliable operation in GCC conditions.

What certifications does this valve carry?

This valve is manufactured and tested per international standards including ASME B16.34, API, and ISO. Export documentation includes material test certificates (MTC), pressure test reports, and certificates of origin for customs clearance in Saudi Arabia, UAE, Qatar, and other GCC countries.

UL Listed Y-Strainer

UL Listed Flanged Y-Type Strainer

Name: UL Listed Flanged Y-Type Strainer
Brand: Supreme Valves
SKU: ul-listed-flanged-y-strainer
Rating: 4.8 (42 reviews)

UL Listed

Flanged Y-type strainer for protection of downstream equipment in fire protection and water distribution systems. Removes particulates and debris from the pipeline.

Key Features

UL Listed for fire protection
Y-type design with 45° screen angle
Cast iron or ductile iron body
SS304 perforated screen
Flanged end connections PN16
Drain plug for easy cleaning

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Technical Specifications

Design Standard	API 599
End Connection	Flanged PN16
Pressure Rating	PN16
Size Range	DN50 - DN300 (2" - 12")
Body Material	Cast Iron / Ductile Iron
Screen Material	Stainless Steel 304
Screen Perforation	3.0mm (standard)
Temperature Range	-10°C to +80°C

Dimension Table

DN	Inch	L (mm)	H (mm)	Weight (kg)
50	2"	230	140	12
80	3"	310	190	22
100	4"	350	230	35
150	6"	480	320	75
200	8"	600	400	125

Purchase Options

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Materials of Construction (MOC)

Component	Material Specification
Body & Bonnet	Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle	SS 410 / SS 420
Seat / Trim	EPDM / NBR / Bronze

Technical Specifications

Parameter	Specification / Standard
Manufacturing / Design Standard	EN 1171 / AWWA C509 / BS 5163
Testing Standard	API 598 / EN 12266-1
Pressure Rating	PN16 / PN25

Dimension Tables

Table	Inch	MM	PORT	A (FE)	A(BW)	B	Ø C	Ø D	R.F.	Ø M	N	PCD	A
CLASS - 150	1"	25	25.4	127.0	127.0	11.2	51	108.0	1.5	15.9	4	79.2	-
CLASS - 150	1.1/2"	40	38.1	165.0	165.0	14.2	73	127.0	1.5	15.9	4	98.6	-
CLASS - 150	2"	50	50.8	203.0	203.0	15.7	92	152.0	1.5	19.1	4	120.6	-
CLASS - 150	2.1/2"	65	63.5	216.0	216.0	17.2	105	178.0	1.5	19.1	4	139.7	-
CLASS - 150	3"	80	76.2	241.0	241.0	19.0	127	190.5	1.5	19.1	4	152.4	-
CLASS - 150	4"	100	101.6	292.0	292.0	23.9	157	229.0	1.5	19.1	8	190.5	-
CLASS - 150	5"	125	127.0	356.0	356.0	24.0	186	254.0	1.5	22.2	8	215.9	-
CLASS - 150	6"	150	152.4	406.0	406.0	25.4	216	279.0	1.5	22.2	8	241.3	-
CLASS - 150	8"	200	203.2	495.0	495.0	28.4	270	343.0	1.5	22.2	8	298.4	-
CLASS - 150	10"	250	254.0	622.0	622.0	29.9	324	406.0	1.5	25.4	12	362.0	-
CLASS - 150	12"	300	304.8	698.0	698.0	31.7	381	483.0	1.5	25.4	12	431.8	-
CLASS - 150	14"	350	336.6	787.0	787.0	34.8	413	533.0	1.5	28.6	12	476.2	-
CLASS - 150	16"	400	387.4	914.0	914.0	36.6	470	597.0	1.5	28.6	16	539.8	-
CLASS - 150	18"	450	438.2	978.0	978.0	39.6	533	635.0	1.5	31.8	16	577.8	-
CLASS - 150	20"	500	489.0	978.0	978.0	42.6	584	693.0	1.5	31.8	20	635.0	-
CLASS - 150	24"	600	590.6	1295.0	1295.0	47.5	692	813.0	1.5	34.9	20	749.3	-
CLASS - 300	1"	25	25.4	203.0	203.0	17.2	51	124.0	1.5	19.1	4	88.9	-
CLASS - 300	1.1/2"	40	38.1	229.0	229.0	20.5	73	155.0	1.5	22.2	4	114.3	-
CLASS - 300	2"	50	50.8	267.0	267.0	22.1	92	165.0	1.5	19.1	8	127.0	-
CLASS - 300	2.1/2"	65	63.5	292.0	292.0	25.4	105	190.0	1.5	22.2	8	149.4	-
CLASS - 300	3"	80	76.2	317.5	317.5	28.4	127	210.0	1.5	22.2	8	168.1	-
CLASS - 300	4"	100	101.6	356.0	356.0	31.7	157	254.0	1.5	22.2	8	200.2	-
CLASS - 300	5"	125	127.0	400.0	400.0	34.8	186	279.0	1.5	22.2	8	235.0	-
CLASS - 300	6"	150	152.4	445.0	445.0	36.6	216	318.0	1.5	22.2	12	269.7	-
CLASS - 300	8"	200	203.2	559.0	559.0	41.1	270	381.0	1.5	25.4	12	330.2	-
CLASS - 300	10"	250	254.0	622.0	622.0	47.5	324	444.0	1.5	28.6	16	387.4	-
CLASS - 300	12"	300	304.8	711.0	711.0	50.8	381	521.0	1.5	31.8	16	450.8	-
CLASS - 300	14"	350	336.6	838.0	838.0	53.8	413	584.0	1.5	31.8	20	514.4	-
CLASS - 300	16"	400	387.4	863.0	863.0	57.1	470	648.0	1.5	34.9	20	571.5	-
CLASS - 300	18"	450	431.8	978.0	978.0	60.2	533	711.0	1.5	34.9	24	628.6	-
CLASS - 300	20"	500	482.6	1016.0	1016.0	63.5	584	775.0	1.5	34.9	24	685.8	-
CLASS - 300	24"	600	584.2	1346.0	1346.0	69.8	692	914.0	1.5	41.3	24	812.8	-
CLASS - 600	1"	25	25.4	216.0	216.0	23.9	51	124.0	6.4	19.1	4	88.9	-
CLASS - 600	1.1/2"	40	38.1	241.0	241.0	28.8	73	155.0	6.4	22.2	4	114.3	-
CLASS - 600	2"	50	50.8	292.0	292.0	31.8	92	165.0	6.4	19.1	8	127.0	-
CLASS - 600	2.1/2"	65	63.5	330.0	330.0	34.8	105	190.0	6.4	22.2	8	149.4	-
CLASS - 600	3"	80	76.2	355.0	355.0	38.2	127	210.0	6.4	22.2	8	168.1	-
CLASS - 600	4"	100	101.6	432.0	432.0	44.5	157	273.0	6.4	25.4	8	215.9	-
CLASS - 600	5"	125	127.0	508.0	508.0	50.8	186	330.0	6.4	28.6	8	266.7	-
CLASS - 600	6"	150	152.4	559.0	559.0	54.2	216	356.0	6.4	28.6	12	292.1	-
CLASS - 600	8"	200	199.9	660.0	660.0	62.0	270	419.0	6.4	31.8	12	349.2	-
CLASS - 600	10"	250	247.7	787.0	787.0	69.9	324	508.0	6.4	34.9	16	431.8	-
CLASS - 600	12"	300	298.5	838.0	838.0	72.9	381	559.0	6.4	34.9	20	489.0	-
CLASS - 900	1"	25	22.1	254.0	254.0	35.0	51	149.0	6.4	25.4	4	101.6	-
CLASS - 900	1.1/2"	40	34.8	305.0	305.0	38.0	73	178.0	6.4	25.4	4	124.0	-
CLASS - 900	2"	50	47.5	368.0	368.0	44.5	92	216.0	6.4	25.4	8	165.1	-
CLASS - 900	2.1/2"	65	57.2	419.0	419.0	47.5	105	244.0	6.4	28.6	8	190.5	-
CLASS - 900	3"	80	72.9	381.0	381.0	44.5	127	241.0	6.4	25.4	8	190.5	-
CLASS - 900	4"	100	98.3	457.0	457.0	50.9	157	292.0	6.4	31.8	8	235.0	-
CLASS - 900	5"	125	120.7	559.0	559.0	57.2	186	349.0	6.4	34.9	8	279.4	-
CLASS - 900	6"	150	146.1	610.0	610.0	62.0	216	381.0	6.4	31.8	12	317.5	-
CLASS - 900	8"	200	190.5	736.6	736.6	69.9	270	470.0	6.4	38.1	12	393.7	-
CLASS - 900	10"	250	238.0	838.0	838.0	76.2	324	546.0	6.4	38.1	16	469.9	-
CLASS - 900	12"	300	282.4	965.0	965.0	85.6	381	610.0	6.4	38.1	20	533.5	-
PRESSURE RATING - ND-40 (PN-40)	1"	25	25	-	-	18.0	68	115.0	2.0	14	4	85.0	160
PRESSURE RATING - ND-40 (PN-40)	1.1/2"	40	38	-	-	18.0	88	150.0	3.0	18	4	110.0	200
PRESSURE RATING - ND-40 (PN-40)	2"	50	50	-	-	20.0	102	165.0	3.0	18	4	125.0	230
PRESSURE RATING - ND-40 (PN-40)	2.1/2"	65	63	-	-	22.0	122	185.0	3.0	18	4	145.0	290
PRESSURE RATING - ND-40 (PN-40)	3"	80	76	-	-	24.0	138	200.0	3.0	18	4	160.0	310
PRESSURE RATING - ND-40 (PN-40)	4"	100	100	-	-	24.0	162	235.0	3.0	22	8	190.0	350
PRESSURE RATING - ND-40 (PN-40)	5"	125	125	-	-	26.0	188	270.0	3.0	26	8	220.0	400
PRESSURE RATING - ND-40 (PN-40)	6"	150	150	-	-	28.0	218	300.0	3.0	26	8	250.0	480
PRESSURE RATING - ND-40 (PN-40)	8"	200	200	-	-	34.0	285	375.0	3.0	30	12	320.0	600
PRESSURE RATING - ND-40 (PN-40)	10"	250	250	-	-	38.0	345	450.0	3.0	33	12	385.0	730
TABLE - H	1"	25	25	-	-	14.3	-	121	-	14	4	87	-
TABLE - H	1.1/2"	40	38	-	-	17.5	-	140	-	14	4	104	-
TABLE - H	2"	50	50	-	-	19.0	-	165	-	18	4	127	-
TABLE - H	2.1/2"	65	63	-	-	19.0	-	184	-	18	8	146	-
TABLE - H	3"	80	76	-	-	22.2	-	203	-	18	8	165	-
TABLE - H	4"	100	100	-	-	25.4	-	229	-	18	8	190	-
TABLE - H	5"	125	125	-	-	28.0	-	279	-	22	8	235	-
TABLE - H	6"	150	150	-	-	28.0	-	305	-	22	12	260	-
TABLE - H	8"	200	200	-	-	31.3	-	368	-	22	12	324	-
TABLE - H	10"	250	250	-	-	34.9	-	432	-	25	12	381	-
SCREWED / SOCKET END	1/2"	15	-	-	-	-	-	-	-	-	-	-	65.0
SCREWED / SOCKET END	3/4"	20	-	-	-	-	-	-	-	-	-	-	70.0
SCREWED / SOCKET END	1"	25	-	-	-	-	-	-	-	-	-	-	90.0
SCREWED / SOCKET END	1.5"	40	-	-	-	-	-	-	-	-	-	-	125.0
SCREWED / SOCKET END	2"	50	-	-	-	-	-	-	-	-	-	-	154.0

Dimension Tables

Table	Inch	MM	PORT	A (FE)	A(BW)	B	Ø C	Ø D	R.F.	Ø M	N	PCD	A
CLASS - 150	1"	25	25.4	127.0	127.0	11.2	51	108.0	1.5	15.9	4	79.2	-
CLASS - 150	1.1/2"	40	38.1	165.0	165.0	14.2	73	127.0	1.5	15.9	4	98.6	-
CLASS - 150	2"	50	50.8	203.0	203.0	15.7	92	152.0	1.5	19.1	4	120.6	-
CLASS - 150	2.1/2"	65	63.5	216.0	216.0	17.2	105	178.0	1.5	19.1	4	139.7	-
CLASS - 150	3"	80	76.2	241.0	241.0	19.0	127	190.5	1.5	19.1	4	152.4	-
CLASS - 150	4"	100	101.6	292.0	292.0	23.9	157	229.0	1.5	19.1	8	190.5	-
CLASS - 150	5"	125	127.0	356.0	356.0	24.0	186	254.0	1.5	22.2	8	215.9	-
CLASS - 150	6"	150	152.4	406.0	406.0	25.4	216	279.0	1.5	22.2	8	241.3	-
CLASS - 150	8"	200	203.2	495.0	495.0	28.4	270	343.0	1.5	22.2	8	298.4	-
CLASS - 150	10"	250	254.0	622.0	622.0	29.9	324	406.0	1.5	25.4	12	362.0	-
CLASS - 150	12"	300	304.8	698.0	698.0	31.7	381	483.0	1.5	25.4	12	431.8	-
CLASS - 150	14"	350	336.6	787.0	787.0	34.8	413	533.0	1.5	28.6	12	476.2	-
CLASS - 150	16"	400	387.4	914.0	914.0	36.6	470	597.0	1.5	28.6	16	539.8	-
CLASS - 150	18"	450	438.2	978.0	978.0	39.6	533	635.0	1.5	31.8	16	577.8	-
CLASS - 150	20"	500	489.0	978.0	978.0	42.6	584	693.0	1.5	31.8	20	635.0	-
CLASS - 150	24"	600	590.6	1295.0	1295.0	47.5	692	813.0	1.5	34.9	20	749.3	-
CLASS - 300	1"	25	25.4	203.0	203.0	17.2	51	124.0	1.5	19.1	4	88.9	-
CLASS - 300	1.1/2"	40	38.1	229.0	229.0	20.5	73	155.0	1.5	22.2	4	114.3	-
CLASS - 300	2"	50	50.8	267.0	267.0	22.1	92	165.0	1.5	19.1	8	127.0	-
CLASS - 300	2.1/2"	65	63.5	292.0	292.0	25.4	105	190.0	1.5	22.2	8	149.4	-
CLASS - 300	3"	80	76.2	317.5	317.5	28.4	127	210.0	1.5	22.2	8	168.1	-
CLASS - 300	4"	100	101.6	356.0	356.0	31.7	157	254.0	1.5	22.2	8	200.2	-
CLASS - 300	5"	125	127.0	400.0	400.0	34.8	186	279.0	1.5	22.2	8	235.0	-
CLASS - 300	6"	150	152.4	445.0	445.0	36.6	216	318.0	1.5	22.2	12	269.7	-
CLASS - 300	8"	200	203.2	559.0	559.0	41.1	270	381.0	1.5	25.4	12	330.2	-
CLASS - 300	10"	250	254.0	622.0	622.0	47.5	324	444.0	1.5	28.6	16	387.4	-
CLASS - 300	12"	300	304.8	711.0	711.0	50.8	381	521.0	1.5	31.8	16	450.8	-
CLASS - 300	14"	350	336.6	838.0	838.0	53.8	413	584.0	1.5	31.8	20	514.4	-
CLASS - 300	16"	400	387.4	863.0	863.0	57.1	470	648.0	1.5	34.9	20	571.5	-
CLASS - 300	18"	450	431.8	978.0	978.0	60.2	533	711.0	1.5	34.9	24	628.6	-
CLASS - 300	20"	500	482.6	1016.0	1016.0	63.5	584	775.0	1.5	34.9	24	685.8	-
CLASS - 300	24"	600	584.2	1346.0	1346.0	69.8	692	914.0	1.5	41.3	24	812.8	-
CLASS - 600	1"	25	25.4	216.0	216.0	23.9	51	124.0	6.4	19.1	4	88.9	-
CLASS - 600	1.1/2"	40	38.1	241.0	241.0	28.8	73	155.0	6.4	22.2	4	114.3	-
CLASS - 600	2"	50	50.8	292.0	292.0	31.8	92	165.0	6.4	19.1	8	127.0	-
CLASS - 600	2.1/2"	65	63.5	330.0	330.0	34.8	105	190.0	6.4	22.2	8	149.4	-
CLASS - 600	3"	80	76.2	355.0	355.0	38.2	127	210.0	6.4	22.2	8	168.1	-
CLASS - 600	4"	100	101.6	432.0	432.0	44.5	157	273.0	6.4	25.4	8	215.9	-
CLASS - 600	5"	125	127.0	508.0	508.0	50.8	186	330.0	6.4	28.6	8	266.7	-
CLASS - 600	6"	150	152.4	559.0	559.0	54.2	216	356.0	6.4	28.6	12	292.1	-
CLASS - 600	8"	200	199.9	660.0	660.0	62.0	270	419.0	6.4	31.8	12	349.2	-
CLASS - 600	10"	250	247.7	787.0	787.0	69.9	324	508.0	6.4	34.9	16	431.8	-
CLASS - 600	12"	300	298.5	838.0	838.0	72.9	381	559.0	6.4	34.9	20	489.0	-
CLASS - 900	1"	25	22.1	254.0	254.0	35.0	51	149.0	6.4	25.4	4	101.6	-
CLASS - 900	1.1/2"	40	34.8	305.0	305.0	38.0	73	178.0	6.4	25.4	4	124.0	-
CLASS - 900	2"	50	47.5	368.0	368.0	44.5	92	216.0	6.4	25.4	8	165.1	-
CLASS - 900	2.1/2"	65	57.2	419.0	419.0	47.5	105	244.0	6.4	28.6	8	190.5	-
CLASS - 900	3"	80	72.9	381.0	381.0	44.5	127	241.0	6.4	25.4	8	190.5	-
CLASS - 900	4"	100	98.3	457.0	457.0	50.9	157	292.0	6.4	31.8	8	235.0	-
CLASS - 900	5"	125	120.7	559.0	559.0	57.2	186	349.0	6.4	34.9	8	279.4	-
CLASS - 900	6"	150	146.1	610.0	610.0	62.0	216	381.0	6.4	31.8	12	317.5	-
CLASS - 900	8"	200	190.5	736.6	736.6	69.9	270	470.0	6.4	38.1	12	393.7	-
CLASS - 900	10"	250	238.0	838.0	838.0	76.2	324	546.0	6.4	38.1	16	469.9	-
CLASS - 900	12"	300	282.4	965.0	965.0	85.6	381	610.0	6.4	38.1	20	533.5	-
PRESSURE RATING - ND-40 (PN-40)	1"	25	25	-	-	18.0	68	115.0	2.0	14	4	85.0	160
PRESSURE RATING - ND-40 (PN-40)	1.1/2"	40	38	-	-	18.0	88	150.0	3.0	18	4	110.0	200
PRESSURE RATING - ND-40 (PN-40)	2"	50	50	-	-	20.0	102	165.0	3.0	18	4	125.0	230
PRESSURE RATING - ND-40 (PN-40)	2.1/2"	65	63	-	-	22.0	122	185.0	3.0	18	4	145.0	290
PRESSURE RATING - ND-40 (PN-40)	3"	80	76	-	-	24.0	138	200.0	3.0	18	4	160.0	310
PRESSURE RATING - ND-40 (PN-40)	4"	100	100	-	-	24.0	162	235.0	3.0	22	8	190.0	350
PRESSURE RATING - ND-40 (PN-40)	5"	125	125	-	-	26.0	188	270.0	3.0	26	8	220.0	400
PRESSURE RATING - ND-40 (PN-40)	6"	150	150	-	-	28.0	218	300.0	3.0	26	8	250.0	480
PRESSURE RATING - ND-40 (PN-40)	8"	200	200	-	-	34.0	285	375.0	3.0	30	12	320.0	600
PRESSURE RATING - ND-40 (PN-40)	10"	250	250	-	-	38.0	345	450.0	3.0	33	12	385.0	730
TABLE - H	1"	25	25	-	-	14.3	-	121	-	14	4	87	-
TABLE - H	1.1/2"	40	38	-	-	17.5	-	140	-	14	4	104	-
TABLE - H	2"	50	50	-	-	19.0	-	165	-	18	4	127	-
TABLE - H	2.1/2"	65	63	-	-	19.0	-	184	-	18	8	146	-
TABLE - H	3"	80	76	-	-	22.2	-	203	-	18	8	165	-
TABLE - H	4"	100	100	-	-	25.4	-	229	-	18	8	190	-
TABLE - H	5"	125	125	-	-	28.0	-	279	-	22	8	235	-
TABLE - H	6"	150	150	-	-	28.0	-	305	-	22	12	260	-
TABLE - H	8"	200	200	-	-	31.3	-	368	-	22	12	324	-
TABLE - H	10"	250	250	-	-	34.9	-	432	-	25	12	381	-
SCREWED / SOCKET END	1/2"	15	-	-	-	-	-	-	-	-	-	-	65.0
SCREWED / SOCKET END	3/4"	20	-	-	-	-	-	-	-	-	-	-	70.0
SCREWED / SOCKET END	1"	25	-	-	-	-	-	-	-	-	-	-	90.0
SCREWED / SOCKET END	1.5"	40	-	-	-	-	-	-	-	-	-	-	125.0
SCREWED / SOCKET END	2"	50	-	-	-	-	-	-	-	-	-	-	154.0

UL Listed Flanged Y-Type Strainer

Key Features

Technical Specifications

Dimension Table

Purchase Options

Materials of Construction (MOC)

Technical Specifications

Dimension Tables

Dimension Tables

Frequently Asked Questions

Why are Y-strainers required in fire pump suction lines?

Frequently Asked Questions

Why are Y-strainers required in fire pump suction lines?

DN	Inch	L (mm)	H (mm)	Weight (kg)
50	2"	230	140	12
80	3"	310	190	22
100	4"	350	230	35
150	6"	480	320	75
200	8"	600	400	125

DN	Inch	L (mm)	H (mm)	Weight (kg)
50	2"	230	140	12
80	3"	310	190	22
100	4"	350	230	35
150	6"	480	320	75
200	8"	600	400	125

DN	Inch	L (mm)	H (mm)	Weight (kg)
50	2"	230	140	12
80	3"	310	190	22
100	4"	350	230	35
150	6"	480	320	75
200	8"	600	400	125