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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Part number 4000903 from Apollo is a Kit, Rp&dc Seat Repair 2-1/2. This product serves professionals across plumbing, industrial processing, and fire protection sectors. The 4000903 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and ASME requirements.
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Subject to factory lead times
Engineered by Apollo, the 4000904 is a Kit, Rp&dcv Rubber Repair. This product serves professionals across industrial processing, commercial mechanical systems, and HVAC sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and UL standards.
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Subject to factory lead times
Part number 4A00710 from Apollo is a Kit, RP Complete Internals. It is commonly found in HVAC, plumbing, and industrial processing applications. Backed by Apollo's commitment to quality, the 4A00710 is built to perform under real-world conditions.
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Subject to factory lead times
The Apollo 4A00510 is a Kit, RP Complete Internals. Typical applications span HVAC, industrial processing, and marine environments. The 4A00510 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and FM standards.
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Subject to factory lead times
The Apollo 4A00310 is a Kit, RP Complete Internals. It is commonly found in commercial mechanical systems, industrial processing, and marine applications. Backed by Apollo's commitment to quality, the 4A00310 is built to perform under real-world conditions. It is designed to comply with applicable NSF and FM requirements.
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Subject to factory lead times
The 4A00810 from Apollo is a Kit, RP Complete Internals. It is commonly found in fire protection, oil and gas, and plumbing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
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Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00410 is a Kit, RP Complete Internals. It is commonly found in plumbing, HVAC, and fire protection applications. Backed by Apollo's commitment to quality, the 4A00410 is built to perform under real-world conditions.
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Subject to factory lead times
The 4000C07 from Apollo is a Kit, Rpda 2nd Chk Repair 6. It is commonly found in plumbing, oil and gas, and fire protection applications. The 4000C07 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
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Subject to factory lead times
Part number 78181801 from Apollo is a Kit, RS Ball Stop 1/2-2top Entry Valve. This product serves professionals across plumbing, fire protection, and industrial processing sectors. 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 78181901 from Apollo is a Kit, RS Ball Stop 3-6top Entry Valve. It is commonly found in commercial mechanical systems, plumbing, and marine applications. Backed by Apollo's commitment to quality, the 78181901 is built to perform under real-world conditions.
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Subject to factory lead times
The Apollo Valves 4000706 is a Kit, Rubber Repair 1-1/4-2. Typical applications span HVAC, plumbing, and oil and gas environments. The 4000706 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and FM standards.
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Subject to factory lead times
The 40003A4S from Apollo is a Kit, Rubber Repair 1/4-1. It is commonly found in oil and gas, plumbing, and industrial processing applications. The 40003A4S reflects Apollo's long-standing reputation for quality and innovation.
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Subject to factory lead times
The 4000304 from Apollo is a Kit, Rubber Repair 1/4-1/2. Typical applications span oil and gas, commercial mechanical systems, and marine environments. The 4000304 reflects Apollo's long-standing reputation for quality and innovation.
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Subject to factory lead times
The Apollo Valves 4D00904 is a Kit, Rubber Repair 2.5-44d Ser. This product serves professionals across marine, commercial mechanical systems, and HVAC sectors. 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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Subject to factory lead times
Part number 4000404 from Apollo is a Kit, Rubber Repair 3/4-1. This product serves professionals across commercial mechanical systems, marine, and plumbing sectors. The 4000404 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable UL and NSF requirements.
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Available for Purchase
Subject to factory lead times
Part number 4000406 from Apollo is a Kit, Rubber Repair 3/4-1. Typical applications span plumbing, HVAC, and fire protection environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
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Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00704 is a Kit, Rubber RV 1-1/2. This product serves professionals across plumbing, HVAC, and oil and gas sectors. The 4A00704 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00504 is a Kit, Rubber RV 1/2-1. This product serves professionals across commercial mechanical systems, oil and gas, and fire protection sectors. Backed by Apollo's commitment to quality, the 4A00504 is built to perform under real-world conditions.
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Available for Purchase
Subject to factory lead times
Part number 4A00H04 from Apollo is a Kit, Rubber RV 10-12. Typical applications span commercial mechanical systems, fire protection, and industrial processing environments. Backed by Apollo's commitment to quality, the 4A00H04 is built to perform under real-world conditions.
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Available for Purchase
Subject to factory lead times
Part number 4A00804 from Apollo is a Kit, Rubber RV 2. 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.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00C04 is a Kit, Rubber RV 2.5-6. It is commonly found in plumbing, oil and gas, and marine applications. The 4A00C04 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00E04 is a Kit, Rubber RV 8. Typical applications span plumbing, fire protection, and oil and gas environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
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Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00517 is a Rubber Kit, 1dc. Typical applications span commercial mechanical systems, oil and gas, and marine environments. The 4A00517 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
Part number 4A00519 from Apollo is a Rubber Kit, 1rpda2. This product serves professionals across plumbing, fire protection, and commercial mechanical systems sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4000903 from Apollo is a Kit, Rp&dc Seat Repair 2-1/2. This product serves professionals across plumbing, industrial processing, and fire protection sectors. The 4000903 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4000904 is a Kit, Rp&dcv Rubber Repair. This product serves professionals across industrial processing, commercial mechanical systems, and HVAC sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00710 from Apollo is a Kit, RP Complete Internals. It is commonly found in HVAC, plumbing, and industrial processing applications. Backed by Apollo's commitment to quality, the 4A00710 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00510 is a Kit, RP Complete Internals. Typical applications span HVAC, industrial processing, and marine environments. The 4A00510 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4A00310 is a Kit, RP Complete Internals. It is commonly found in commercial mechanical systems, industrial processing, and marine applications. Backed by Apollo's commitment to quality, the 4A00310 is built to perform under real-world conditions. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4A00810 from Apollo is a Kit, RP Complete Internals. It is commonly found in fire protection, oil and gas, and plumbing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00410 is a Kit, RP Complete Internals. It is commonly found in plumbing, HVAC, and fire protection applications. Backed by Apollo's commitment to quality, the 4A00410 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4000C07 from Apollo is a Kit, Rpda 2nd Chk Repair 6. It is commonly found in plumbing, oil and gas, and fire protection applications. The 4000C07 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 78181801 from Apollo is a Kit, RS Ball Stop 1/2-2top Entry Valve. This product serves professionals across plumbing, fire protection, and industrial processing sectors. 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 78181901 from Apollo is a Kit, RS Ball Stop 3-6top Entry Valve. It is commonly found in commercial mechanical systems, plumbing, and marine applications. Backed by Apollo's commitment to quality, the 78181901 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4000706 is a Kit, Rubber Repair 1-1/4-2. Typical applications span HVAC, plumbing, and oil and gas environments. The 4000706 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 40003A4S from Apollo is a Kit, Rubber Repair 1/4-1. It is commonly found in oil and gas, plumbing, and industrial processing applications. The 40003A4S reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4000304 from Apollo is a Kit, Rubber Repair 1/4-1/2. Typical applications span oil and gas, commercial mechanical systems, and marine environments. The 4000304 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4D00904 is a Kit, Rubber Repair 2.5-44d Ser. This product serves professionals across marine, commercial mechanical systems, and HVAC sectors. 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
Part number 4000404 from Apollo is a Kit, Rubber Repair 3/4-1. This product serves professionals across commercial mechanical systems, marine, and plumbing sectors. The 4000404 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4000406 from Apollo is a Kit, Rubber Repair 3/4-1. Typical applications span plumbing, HVAC, and fire protection environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00704 is a Kit, Rubber RV 1-1/2. This product serves professionals across plumbing, HVAC, and oil and gas sectors. The 4A00704 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00504 is a Kit, Rubber RV 1/2-1. This product serves professionals across commercial mechanical systems, oil and gas, and fire protection sectors. Backed by Apollo's commitment to quality, the 4A00504 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00H04 from Apollo is a Kit, Rubber RV 10-12. Typical applications span commercial mechanical systems, fire protection, and industrial processing environments. Backed by Apollo's commitment to quality, the 4A00H04 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4A00804 from Apollo is a Kit, Rubber RV 2. 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.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4A00C04 is a Kit, Rubber RV 2.5-6. It is commonly found in plumbing, oil and gas, and marine applications. The 4A00C04 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4A00E04 is a Kit, Rubber RV 8. Typical applications span plumbing, fire protection, and oil and gas 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 4A00517 is a Rubber Kit, 1dc. Typical applications span commercial mechanical systems, oil and gas, and marine environments. The 4A00517 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
Part number 4A00519 from Apollo is a Rubber Kit, 1rpda2. This product serves professionals across plumbing, fire protection, and commercial mechanical systems sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable UL and FM requirements.
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.