U41sf/M Stainless Steel Flanged Plunger Valve for Steam & Oil

• Customization: Available
• Function: Ordinary Plunger Valve
• Material: Carbon Steel Stainless Steel
• Model NO.: Flange Plunger Valve U41SF/M
• Structure: Ball
• Pressure-Temperature Frequency Setting: ASME B16.34
• Warranty: 3 Years
• Port Size: 18inch
• Pressure: API 6D
• Customized Support: OEM, ODM, Obm, Software Reengineering
• Trademark: keke
• Origin: Zhejiang Wenzhou
• HS Code: 7304119000
• Production Capacity: 5000
• Package Size: 50.00cm * 50.00cm * 100.00cm
• Package Gross Weight: 100.000kg

Product Description

Product Description

Wear resistance mechanism

When the plunger valve is cosed, the siem inserts the punger into the lower seal ring as if the bole was insered inio the boe, No maler how much force you use to tum thehandwheel, it wl not afect the sealng force between the plunger and the sealng ring. They silmainlain the degree of preightening duning asemby. That is to saly, ther woringsuaces are notsubiec o extemal aciors.inuences, When the plunger vave is opened, he pluner moves only siowly in the sealing, and the conlacl surace of he plunger and theseal ring hardly wears, This feature is not available in ordinary shut-off valves

Don't care about impurities in the fluid

Fine impurities in the fuid do not harm the plunger valve. When the valve is closed, the plunger enters the seal ring and sweeps out the aerosol in the liquid.

Key in the seal ring

The sealing ring is the key component of a plunger valve. It is made of a composite material that is high-strength, high-temperature resistant, corrosion-resistant, wear-resistant, non-toxic, and capable of withstanding long-term high pressure and high temperature without losing elasticity while maintaining stable dimensions. The main components include PTFE (polytetrafluoroethylene), graphite, and highly elastic rubber. The sealing ring is a high-tech product that can still provide excellent sealing performance even after millions of reciprocating movements. The various specifications of sealing rings we typically supply can be continuously used under conditions ranging from -10°C to 300°C without failur

Key points for the new plunger valve to be activated

When a new plunger valve is put into operation, the nuts on the valve cover should be tightened once more, one by one. This operation should be carried out within one hour after the valve reaches its operating temperature, and the valve should be in the closed position during this process.

Leakagetreatment(leakageon the sealing surface and the same treatment method for the upper bonnet)

If leakage occurs after the plunger valve has been in service for a long time, close the valve completely, then tighten the nuts on the valve cover diagonally in a crisscross pattern until the leakage stops. Caution: Never tighten the nuts all the way down in a single attempt.

Method of updating the plunger valve

When the nuts on the valve cover have been fully tightened and leakage still cannot be eliminated, it is necessary to service the plunger valve. In this case, "servicing" does not require removing the leaking plunger valve body from the pipeline; instead, simply replace the old sealing rings with new ones. Only a few simple tools, such as wrenches and screwdrivers, are needed. The specific steps are as follows:

1. Shut off the upstream fluid so that no fluid passes through the valve to be serviced (hereinafter referred to as the valve), and fully open the valve.

2. Remove the nuts and rotate the handwheel in the closing direction to bring out the valve cover.

3. When the valve cover bolt holes are disengaged from the studs, rotate the valve cover around the valve stem to an angle so that the bottom face of the valve cover flange faces the heads of the studs.

4. Rotate the handwheel in the opposite direction, allowing the valve cover to rest on the studs, and continue turning the handwheel until the plunger pulls out the upper sealing ring.

5. Use a screwdriver to remove the upper sealing ring, the metal spacer, and the lower sealing ring.

6. Replace the old sealing rings with new ones, inserting them into the valve body in the order of lower sealing ring → metal spacer → upper sealing ring.

7. After cleaning the inner surface of the sealing rings and the outer surface of the plunger, put the plunger together with the valve cover, stem, etc., into position, and tighten the nuts to press the valve cover face onto the upper sealing ring.

8. Rotate the handwheel in the closing direction to ensure the plunger, along with the valve cover and stem, is in place, and tighten the nuts, pressing the valve cover against the upper sealing ring.

9. Follow the guidelines in the "Key Points for New Plunger Start-Up" section.

At this point, the replacement process of the sealing rings is complete, and the plunger valve is restored to like-new condition - achieving a "new valve" with minimal time and cost.

 

Structure and Characteristics

The working principle of the angle plunger valve is exactly the same as that of the straight-through plunger valve; the difference lies in its installation position in the pipeline. In industries such as petroleum, chemical, fertilizer, and pharmaceuticals, long transportation pipelines often have many angled turns. The angle plunger valve is ideally installed at these positions, which not only reduces the need for pipe elbows but also makes installation more convenient, saves labor, and conserves materials.

 

 

Angle Plunger Valve Main Connection Size

Model /	DN (mm) / Nominal Diameter DN (mm)	L (mm)	D (mm)	D (mm)	D (mm)	b (mm)	Zφd	H (mm)	H (mm)	D (mm)
U41S16C	15	130	95	65	45	14	4φ14	116	144	80
	20	150	105	75	55	16	4φ14	142	176	100
	25	160	115	85	65	16	4φ14	163	205	120
	32	180	135	100	78	18	4φ18	182	227	150
	40	200	145	110	85	18	4φ18	210	260	160
	50	230	160	125	100	20	4φ18	230	286	180
	65	290	180	145	120	22	4φ18	250	310	200
	80	310	195	160	135	22	8φ18	269	340	240
	100	350	215	180	155	24	8φ18	278	356	280
	125	400	240	210	185	26	8φ18	332	440	320
	150	480	280	250	218	28	8φ25	434	562	360
	200	650/700	335	295	265	30	12φ23	498	660	460
	250	650/700	405	355	320	36	12φ23	540	660	550
	300	750	460	410	360	38	16φ30	650	680	550
U41S25C	15	130	95	65	45	16	4φ14	116	144	80
	20	150	105	75	55	16	4φ14	142	176	100
	25	160	115	85	65	18	4φ18	163	205	120
	32	180	135	100	78	18	4φ18	182	227	150
	40	200	145	110	85	18	4φ18	210	260	160
	50	230	160	125	100	20	4φ18	230	286	180
	65	290	180	145	120	22	8φ18	250	310	200
	80	310	195	160	135	22	8φ18	269	340	240
	100	350	215	180	155	24	8φ18	278	356	280
	125	400	270	220	188	28	8φ25	332	440	320
	150	480	300	250	218	30	8φ25	434	562	360
	200	600	360	310	282	34	12φ26	498	660	460
	250	650/700	425	370	332	36	12φ26	540	660	550
	300	750	485	430	390	40	16φ30	650	680	550
U41S40C	15	130	95	65	45	16	4φ14	116	144	80
	20	150	105	75	55	16	4φ14	142	176	100
	25	160	115	85	65	18	4φ18	163	205	120
	32	180	135	100	78	18	4φ18	182	227	150
	40	200	145	110	85	18	4φ18	210	260	160
	50	230	160	125	100	20	4φ18	230	286	180
	65	290	180	145	120	22	8φ18	250	310	200
	80	310	195	160	135	22	8φ18	269	340	240
	100	350	230	190	160	24	8φ23	278	356	280
	125	400	270	220	188	28	8φ25	332	440	320
	150	480	300	250	218	30	8φ25	434	562	360
	200	600	375	320	282	38	12φ30	498	660	460
	250	650/700	445	385	345	38	12φ30	540	660	550
	300	750	510	450	408	46	16φ34	650	680	550

 

 

 

Q1: How long is the product warranty?
A1: Within 24 months, we will provide you with replacement or repair services, except for quality problems caused by human factors

Q2: Do you have any MOQ limit for valve orders?
A2: No, the MOQ is 1 unit for sample inspection.

Q3: Is there a wholesale discount?
A3: Wholesale discounts are available for large-volume orders. Please contact us for discount information.

Q4: Does it support customized valve needs?
A4: It can be customized. Please confirm the customization details with us.

Q5: Are you a trading company or a manufacturer?
A5: We are a manufacturer and a factory.

Q6: Where is your factory?
A6: Keke Group Co., Ltd., headquartered in Wenzhou, Zhejiang Province