Valve Repair Kits & Parts
Valve repair kits and parts are essential components used to maintain and repair valves in fluid control systems. These kits typically include seals, gaskets, o-rings, springs, and other necessary parts needed to restore or replace worn or damaged elements of a valve. Valve repair kits and parts enable the repair and refurbishment of valves, extending their lifespan and ensuring proper functioning. By using these kits, operators can quickly and cost-effectively address valve issues without requiring complete valve replacement. These kits are available for different types and sizes of valves, allowing for specific repairs tailored to the valve's design and requirements. Valve repair kits and parts are essential for industries such as manufacturing, petrochemicals, water treatment, and HVAC, where reliable valve performance is crucial.
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The Apollo 4A00H16 is a Complete Kit, RP Rpda2. It is commonly found in oil and gas, commercial mechanical systems, and fire protection applications. Backed by Apollo's commitment to quality, the 4A00H16 is built to perform under real-world conditions.
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Engineered by Apollo, the 4A00822 is a Kit, Complete Internals Rpda. It is commonly found in marine, commercial mechanical systems, and HVAC applications. The 4A00822 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable FM and ASME requirements.
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Engineered by Apollo, the 4A00703 is a Kit, Complete RP 1st Check. It is commonly found in HVAC, industrial processing, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and NSF requirements.
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Part number 4A00803 from Apollo is a Kit, Complete RP 1st Check. Typical applications span fire protection, HVAC, and plumbing environments. Backed by Apollo's commitment to quality, the 4A00803 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
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The Apollo Valves 4A00503 is a Kit, Complete RP 1st Check 1. Typical applications span commercial mechanical systems, plumbing, and HVAC environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
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Engineered by Apollo, the 4A00303 is a Kit, Complete RP 1st Check 1/2. It is commonly found in marine, commercial mechanical systems, and HVAC applications. The 4A00303 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and UL standards.
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The Apollo 4A00403 is a Kit, Complete RP 1st Check 3/4. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4A00403 is built to perform under real-world conditions.
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The Apollo Valves 4000704 is a Kit, Complete Rubber Repair. This product serves professionals across HVAC, oil and gas, and commercial mechanical systems sectors. The 4000704 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and ASME standards.
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The 40004A4 from Apollo is a Kit, Complete Rubber Repair. Typical applications span industrial processing, plumbing, and marine environments. Backed by Apollo's commitment to quality, the 40004A4 is built to perform under real-world conditions.
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The 40007A6 from Apollo is a Kit, Complete Rubber Repair. This product serves professionals across plumbing, fire protection, and industrial processing sectors. Backed by Apollo's commitment to quality, the 40007A6 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
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The 40004A6 from Apollo is a Kit, Complete Rubber Repair. It is commonly found in oil and gas, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
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Part number 40003A4 from Apollo is a Kit, Complete Rubber Repair. This product serves professionals across plumbing, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 40003A4 is built to perform under real-world conditions. This product meets relevant NSF and ASME standards.
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Subject to factory lead times
The Apollo 40007A4 is a Kit, Complete Rubber Repair. Typical applications span oil and gas, fire protection, and commercial mechanical systems environments. Apollo products are trusted by engineers and specifiers worldwide.
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Subject to factory lead times
Engineered by Apollo, the 4A00705 is a Kit, Complete RV 1-1/2. Typical applications span marine, commercial mechanical systems, and HVAC environments. Backed by Apollo's commitment to quality, the 4A00705 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
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The Apollo Valves 4A00505 is a Kit, Complete RV 1/2-1. This product serves professionals across commercial mechanical systems, plumbing, and HVAC sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and NSF standards.
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Part number 4A00805 from Apollo is a Kit, Complete RV 2. This product serves professionals across plumbing, commercial mechanical systems, and industrial processing sectors. The 4A00805 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable UL and FM requirements.
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The 4A00407 from Apollo is a Kit, Complete Top Half PVB. This product serves professionals across plumbing, oil and gas, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and NSF requirements.
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The Apollo 4A00707 is a Kit, Complete Top Half PVB. This product serves professionals across HVAC, fire protection, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4A00707 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
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Subject to factory lead times
The Apollo Valves 4A00507 is a Kit, Complete Top Half PVB. It is commonly found in commercial mechanical systems, oil and gas, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and NSF standards.
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Subject to factory lead times
The Apollo Valves 4A00807 is a Kit, Complete Top Half PVB. Typical applications span fire protection, HVAC, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
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Engineered by Apollo, the 4A00H20 is a Complete Kit, 10-12 DC. It is commonly found in industrial processing, plumbing, and HVAC applications. The 4A00H20 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and FM standards.
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Subject to factory lead times
Part number 4A00H20A from Apollo is a Complete Kit, 10-12 DC. Typical applications span plumbing, fire protection, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
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Subject to factory lead times
The Apollo 4A00H22A is a Complete Kit, 10-12 RP. This product serves professionals across fire protection, HVAC, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A00H22A is built to perform under real-world conditions.
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Subject to factory lead times
Engineered by Apollo, the 4A00H22 is a Complete Kit, 10-12 RP. Typical applications span HVAC, industrial processing, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00H16 is a Complete Kit, RP Rpda2. It is commonly found in oil and gas, commercial mechanical systems, and fire protection applications. Backed by Apollo's commitment to quality, the 4A00H16 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00822 is a Kit, Complete Internals Rpda. It is commonly found in marine, commercial mechanical systems, and HVAC applications. The 4A00822 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00703 is a Kit, Complete RP 1st Check. It is commonly found in HVAC, industrial processing, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00803 from Apollo is a Kit, Complete RP 1st Check. Typical applications span fire protection, HVAC, and plumbing environments. Backed by Apollo's commitment to quality, the 4A00803 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00503 is a Kit, Complete RP 1st Check 1. Typical applications span commercial mechanical systems, plumbing, and HVAC environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00303 is a Kit, Complete RP 1st Check 1/2. It is commonly found in marine, commercial mechanical systems, and HVAC applications. The 4A00303 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00403 is a Kit, Complete RP 1st Check 3/4. This product serves professionals across commercial mechanical systems, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 4A00403 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4000704 is a Kit, Complete Rubber Repair. This product serves professionals across HVAC, oil and gas, and commercial mechanical systems sectors. The 4000704 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 40004A4 from Apollo is a Kit, Complete Rubber Repair. Typical applications span industrial processing, plumbing, and marine environments. Backed by Apollo's commitment to quality, the 40004A4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 40007A6 from Apollo is a Kit, Complete Rubber Repair. This product serves professionals across plumbing, fire protection, and industrial processing sectors. Backed by Apollo's commitment to quality, the 40007A6 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 40004A6 from Apollo is a Kit, Complete Rubber Repair. It is commonly found in oil and gas, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 40003A4 from Apollo is a Kit, Complete Rubber Repair. This product serves professionals across plumbing, fire protection, and marine sectors. Backed by Apollo's commitment to quality, the 40003A4 is built to perform under real-world conditions. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 40007A4 is a Kit, Complete Rubber Repair. Typical applications span oil and gas, fire protection, and commercial mechanical systems environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00705 is a Kit, Complete RV 1-1/2. Typical applications span marine, commercial mechanical systems, and HVAC environments. Backed by Apollo's commitment to quality, the 4A00705 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00505 is a Kit, Complete RV 1/2-1. This product serves professionals across commercial mechanical systems, plumbing, and HVAC sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00805 from Apollo is a Kit, Complete RV 2. This product serves professionals across plumbing, commercial mechanical systems, and industrial processing sectors. The 4A00805 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A00407 from Apollo is a Kit, Complete Top Half PVB. This product serves professionals across plumbing, oil and gas, and commercial mechanical systems sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00707 is a Kit, Complete Top Half PVB. This product serves professionals across HVAC, fire protection, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4A00707 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00507 is a Kit, Complete Top Half PVB. It is commonly found in commercial mechanical systems, oil and gas, and marine applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00807 is a Kit, Complete Top Half PVB. Typical applications span fire protection, HVAC, and plumbing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00H20 is a Complete Kit, 10-12 DC. It is commonly found in industrial processing, plumbing, and HVAC applications. The 4A00H20 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00H20A from Apollo is a Complete Kit, 10-12 DC. Typical applications span plumbing, fire protection, and industrial processing environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00H22A is a Complete Kit, 10-12 RP. This product serves professionals across fire protection, HVAC, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4A00H22A is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00H22 is a Complete Kit, 10-12 RP. Typical applications span HVAC, industrial processing, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
FAQS
- Valve repair kits are pre-packaged sets of replacement parts specifically assembled for a particular valve model, containing all the wear components needed to rebuild or refurbish the valve to like-new condition. A typical valve repair kit includes seals, gaskets, O-rings, seats, packing, springs, and other soft goods (elastomeric and polymer components) that wear out or degrade over time due to the effects of pressure cycling, temperature, chemical exposure, and friction. For example, repair kits for Worcester ball valves available through Centro include PTFE stem packing, PTFE thrust washers, PTFE seals, FKM O-rings, and RTFE (reinforced PTFE) seats — all the parts needed to re-seal the valve and restore tight shutoff. Repair kits for Dwyer diaphragm valves include replacement diaphragms and seal components. Having the correct repair kit on hand allows maintenance to rebuild a valve during a scheduled outage rather than purchasing and waiting for a complete replacement valve, saving both cost and downtime.
- Repairing a valve with a rebuild kit is generally the right choice when the valve body, bonnet, and other metallic structural components are still in good condition and only the soft sealing components (seats, seals, packing, O-rings, gaskets) have worn out. This is the most common maintenance scenario for valves in normal service — the metal body lasts for decades, but the polymer and elastomer seals wear over time and need periodic replacement. Repair is usually more cost-effective than replacement for larger, more expensive valves where the body and trim represent the majority of the valve cost. Replacement is the better option when the valve body shows significant corrosion, erosion, cracking, or other structural damage that compromises its pressure-containing integrity; when the valve design is obsolete and spare parts are no longer available; when the valve has been repaired multiple times and the internal surfaces are too worn to hold new seals properly; or when the process requirements have changed and a different valve type or size is now needed.
- Replacement pilot valve assemblies are complete, pre-assembled pilot valve units that can be swapped into an existing valve to restore proper operation when the original pilot section has failed. Rather than replacing the entire valve, you replace only the pilot mechanism — the solenoid, armature, pilot orifice, and associated seals — which is the section most likely to fail or degrade over time. Centro carries replacement pilot valve assemblies for several product lines, including the Dwyer SVT Series (replacement pilot valve assemblies that restore the solenoid operation of these temperature control valves). Pilot section failures are typically caused by coil burnout (from overheating, voltage spikes, or moisture ingress), pilot orifice clogging (from dirty or contaminated air supply), and armature or plunger wear (from millions of operating cycles). Having a replacement pilot assembly on hand allows quick field repair without removing the main valve body from the piping — the pilot section is typically bolted or threaded onto the main valve body and can be swapped in minutes.
- Identifying the correct repair kit requires knowing the valve's manufacturer, model number, and size. The manufacturer's part number (MPN) for the valve is the most reliable way to cross-reference to the correct repair kit — each valve model has a specific kit designed to fit its internal dimensions, seal groove sizes, and component specifications. The valve size (pipe connection size) is also critical because even within the same model family, different sizes use different diameter seals, seats, and packing. The valve's material of construction (body material and trim material) may affect which kit is correct, as some models offer different seal materials optimized for different services. If the valve nameplate or MPN is not readable, measure the valve's connection size, identify the manufacturer from the body markings or casting patterns, and consult with Centro's product specialists who can help cross-reference from the available information. Always verify that the kit contents match the components in the valve before beginning the repair — compare each part from the kit to the corresponding worn part removed from the valve.
- A smart spare parts strategy minimizes unplanned downtime while controlling inventory costs. Keep repair kits on hand for your most critical valves — those where a failure would shut down a production line, create a safety hazard, or cause environmental non-compliance. Prioritize repair kits for valves in severe service (high temperatures, corrosive chemicals, abrasive media, high cycling rates) because their soft goods wear out faster. Stock replacement solenoid coils for your pilot valves and solenoid valves, as coil failure is one of the most common electrical valve failures. Stock replacement diaphragms for diaphragm valves and pulse valves, as these are the primary wear components. Keep replacement actuator seal kits for your pneumatic actuators. For commonly used valve sizes and types, consider keeping a complete spare valve that can be installed immediately as a swap-out, with the failed valve then repaired on the bench and returned to spare stock. Work with Centro's product specialists to identify your critical valves and build a recommended spare parts list based on your specific installed base and operating conditions.