Trying to identify a valve before ordering a replacement? Start with the nameplate or body markings, then compare the body, operator and stem arrangement. A round handwheel or a tall bonnet can be a clue, but neither proves that the valve is a 게이트 밸브.
This guide follows five external and construction checks. You can usually gather the useful identification details from the installed valve without dismantling it.
게이트 밸브를 식별하는 것은 다른 유형의 밸브와 구별할 수 있게 해주기 때문에 특히 중요합니다.. 다양한 밸브는 다양한 기능을 제공합니다., 잘못된 유형을 사용하면 비효율성이 발생하거나 시스템이 손상될 수도 있습니다..
Look at the valve as a whole: its markings, 사이, operator and stem arrangement. If maintenance records or a product reference are available, compare those with what is fitted in the line.
The steps below explain which clues are useful, which are shared with other valve types, and what to send us if the identification is still unclear.
단계 1: 밸브 본체를 확인하세요
게이트 밸브는 유체의 흐름을 제어하기 위해 배관 및 산업 응용 분야에서 일반적으로 사용됩니다.. 게이트 밸브를 올바르게 작동하고 유지하려면, 그것을 식별할 수 있는 것이 중요하다. 게이트 밸브를 식별하는 첫 번째 단계는 밸브 본체를 확인하는 것입니다..
Gate valve bodies vary with size, material and construction. They are not reliably identified by a rectangular or square outline. Look instead for the manufacturer’s name, 모델, nominal size and pressure marking cast into the body or shown on the nameplate.
The body contains a passage between the pipe connections and space for the gate to move out of that passage. From the outside, 하지만, much of this construction is hidden. Paint colour and body shape should be treated as supporting clues rather than a final identification.
그 모양 외에도, 식별에 도움이 될 수 있는 밸브 본체의 다른 특징도 확인할 수 있습니다.. 여기에는 밸브 제조업체 또는 사양을 나타내는 표시나 라벨이 포함될 수 있습니다.. 이러한 세부 사항을 기록해 두면 나중에 참조하거나 교체 부품을 주문할 때 도움이 될 수 있습니다..
Record the markings before comparing product photographs. Two valves can look similar while having different pressure ratings, materials or connections. A clear photograph of each marked area is more useful for a replacement enquiry than a description such as “the square valve”.
게이트 밸브를 식별하는 데는 단순한 외관 이상의 문제가 포함된다는 점을 기억하십시오.; 또한 주요 기능에 대한 지식과 해당 기능이 운영에 어떻게 기여하는지 이해해야 합니다.. 다음 단계, 밸브가 실제로 게이트 밸브인지 추가로 확인하는 데 도움이 되는 추가 측면을 살펴보겠습니다..
단계 2: 손잡이를 찾아보세요
Many manual gate valves use a handwheel, but globe valves and other multi-turn valves do too. A handwheel tells you about the operating method; on its own, it does not identify the closing mechanism or show the valve position.
Check how the handwheel connects to the stem or gearbox. On an installed valve, a gearbox, chainwheel or actuator may cover details that are easy to see on a bare manual valve.
Gate valves can have handwheels, operating caps, gear operators or actuators. An underground valve operated through an extension spindle may have no visible handwheel at the body.
A freely turning handwheel is not an identification test. Resistance depends on the valve position, pressure and mechanical condition. Do not force or cycle an unidentified valve simply to find out what type it is.
Use the operator as one clue and keep its markings in your photographs. If an actuator is fitted, record the valve nameplate separately: the actuator model identifies the drive, not necessarily the valve beneath it.
단계 3: Examine the Stem Arrangement
Gate valves are available with rising and non-rising stems. With a rising-stem arrangement, the stem travels upwards as the gate opens. With an NRS arrangement, the stem rotates without rising while the gate moves inside the body.
Check the visible stem arrangement and any position indicator. A stem that stays at the same external height does not rule out a gate valve. 우리의 운영체제&Y and NRS gate valve comparison shows why both arrangements are used.
A rising stem gives an indication of gate travel; an NRS valve may have a separate position indicator. These indications describe the operating position, rather than proving that a closed valve is leak-tight.
Stem length alone cannot tell you whether a valve needs replacement. For identification, the model, operator arrangement and visible markings are more useful. Keep condition assessment separate from identifying the valve type.
Also remember that other valve types can have rising stems. Confirm the stem clue against the body markings and the product information before deciding what to order.
단계 4: Confirm the Gate Construction
The gate is the closing element that distinguishes a gate valve. In most installed gate valves it is enclosed by the body and bonnet, so it is not available for direct visual inspection. Use the identified model or existing product information to confirm the construction.
ㅏ wedge gate moves across the flow path and retracts from it when opened. In a parallel gate design, “parallel” describes the seating arrangement, not a gate lying along the flow. Ordinary gate valves are intended for isolation, 일반적으로 완전 개방 또는 완전 폐쇄, rather than precise flow regulation.
게이트를 구성하는 데 사용되는 재료도 고려하는 것이 중요합니다.. 게이트 밸브는 황동과 같은 다양한 재료로 만들어진 게이트를 가질 수 있습니다., 스테인레스 스틸, 또는 주철, 의도된 적용 및 작동 조건에 따라. 부식이나 손상을 방지하려면 게이트의 재질이 밸브를 통해 운반되는 유체와 호환되는지 확인하는 것이 중요합니다..
추가적으로, 게이트 표면에 눈에 띄는 마모나 손상이 있는지 기록해 두십시오.. 시간이 지남에 따라, 연마성 유체 또는 고속 흐름에 장기간 노출되면 게이트가 침식되거나 구멍이 생길 수 있습니다.. 이러한 마모 징후는 밸브의 성능과 밀봉 기능에 영향을 미칠 수 있습니다..
If the valve is already dismantled during planned maintenance, photographs of the gate and seat can help identify the design. For an installed valve, do not remove the bonnet just to inspect the gate; identification should begin with the external information.
단계 5: 보닛 식별
The bonnet is the cover joined to the valve body above the gate. It forms part of the pressure boundary and houses or supports the stem sealing arrangement.
Bonnet materials vary with the valve design and service, including iron, steel and other alloys. Neither a particular material nor a dome-shaped outline is exclusive to gate valves.
The bonnet may be bolted, threaded or attached by another design-specific joint. The joint seals the bonnet to the body, while packing or another stem-seal arrangement seals around the moving stem. These are distinct sealing locations.
Photograph the body-to-bonnet joint and any visible model markings. A globe valve can also have a bonnet above the body, so this feature needs to be read together with the other clues.
보닛의 목적을 파악하고 이해함으로써, 배관 및 산업 환경에서 게이트 밸브의 적절한 유지 관리 및 작동을 보장할 수 있습니다.. 이 중요한 구성 요소를 정기적으로 검사하고 유지 관리하면 수명을 연장하고 누출이나 손상으로 인해 발생할 수 있는 잠재적인 문제를 예방하는 데 도움이 됩니다..
Confirm the Identification Before Ordering
A reliable identification brings several clues together. Keep the nameplate and body markings as the starting point, then compare the connections, operator, stem and bonnet with the corresponding product information.
The external body shape helps describe what is installed, but it does not establish the valve type. Record the nominal size and pressure markings as well as the manufacturer and model where these are legible.
A handwheel is common to several valve types. Include the gearbox or actuator reference where fitted, while keeping the valve’s own identification separate.
A gate valve may have a rising or non-rising stem. Note the arrangement and any position indicator, especially where headroom or remote operation will affect the replacement.
The internal gate determines the closing design. Confirm it from the model or maintenance records when possible, rather than opening an installed valve to look inside.
The bonnet and connection details help narrow the match. 교체용, compare the end connections and installed length as well as the nominal pipe size.
Still unsure what is fitted? Send Farpro a valve identification enquiry with an overall photo and close-ups of the nameplate, body markings and connections. Tell us the fluid, required quantity and destination. We can discuss the likely product options and the details still needed before quoting a replacement.
Once the arrangement is clear, explore Farpro’s 운영체제&Y 게이트 밸브, NRS 게이트 밸브 또는 flanged gate valve range. The product pages show existing models to compare with your requirement.