{"product_id":"kit-relief-valve-chapin-as202-204-new-style","title":"Pressure Relief Valve for Chapin Sprayers AS202 \u0026 AS204","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe new-style pressure relief valve for Hydro-Force pump-up sprayers, with fluoroelastomer (Viton) seals. It mounts on the tank lid and is lockable open or closed.\u003c\/p\u003e\u003cp\u003eIt replaces the pressure relief valve on the current-generation AS18, AS202 and AS204.\u003c\/p\u003e\n\u003ch2\u003eWhich Generation Is Your Sprayer?\u003c\/h2\u003e\n\u003cp\u003eThe AS18, AS202 and AS204 changed generation, and the parts are not interchangeable. There is a look-and-see test that needs no serial number and no tools.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief valve on the pump assembly\u003c\/strong\u003e — you have the \u003cstrong\u003eold\u003c\/strong\u003e generation. It takes \u003ca href=\"https:\/\/ccwonline.com.au\/products\/na1610-pressure-relief-valve-as202-as204-as16\"\u003ePressure Relief Valve NA1610 (old style)\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief valve on the tank lid\u003c\/strong\u003e, lockable open or closed, usually alongside a moulded wand clip on the lid — you have the \u003cstrong\u003enew\u003c\/strong\u003e generation. It takes \u003ca href=\"https:\/\/ccwonline.com.au\/products\/kit-relief-valve-chapin-as202-204-new-style\"\u003ePressure Relief Valve NA2310 (new style)\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese sprayers are built by Chapin and badged Hydro-Force, and the change tracks Chapin's move to its XP series. Chapin states the older valve is \u003cstrong\u003enot compatible with XP sprayers\u003c\/strong\u003e, so this is the manufacturer's own position rather than our inference.\u003c\/p\u003e\n\u003cp\u003eIf you are not certain, send us a photo of the lid and pump before ordering.\u003c\/p\u003e\n\u003ch2\u003eTechnical Notes\u003c\/h2\u003e\n\u003cp\u003eThe Chapin cross-reference is \u003cstrong\u003e6-4605\u003c\/strong\u003e — Chapin item number 988134, the XP-series relief valve. Quoting that number is the quickest way to check availability if you are ever stuck.\u003c\/p\u003e\n\u003cp\u003eThe seals are \u003cstrong\u003efluoroelastomer (FKM \/ Viton)\u003c\/strong\u003e, which is the substantive upgrade over the old-generation valve. Viton holds up to solvent-bearing chemistry that would swell and soften a nitrile seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTwo things we cannot tell you.\u003c\/strong\u003e The relief pressure is not published by Chapin or any distributor. And Chapin makes a closely related acid-service variant (6-4606); we have not been able to confirm from documentation which of the two this part is. If you are running acid rinses through the sprayer, contact us and we will confirm with the supplier before you order.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCW SKU\u003c\/td\u003e\n\u003ctd\u003eNA2310\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003ePressure relief valve, tank lid mount, lockable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneration\u003c\/td\u003e\n\u003ctd\u003eNew style \/ Chapin XP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeal material\u003c\/td\u003e\n\u003ctd\u003eFluoroelastomer (FKM \/ Viton)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits\u003c\/td\u003e\n\u003ctd\u003eNew-generation AS18, AS202, AS204\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOld-style equivalent\u003c\/td\u003e\n\u003ctd\u003eNA1610 — does not interchange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChapin cross reference\u003c\/td\u003e\n\u003ctd\u003e6-4605 (item 988134)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelief pressure\u003c\/td\u003e\n\u003ctd\u003e40 to 60 psi. Confirmed by CCW; not published by Chapin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcid-service variant\u003c\/td\u003e\n\u003ctd\u003eChapin 6-4606 is a separate part. This is the standard 6-4605, not the acid-service valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eHow do I know I need the new valve, not the old one?\u003c\/h3\u003e\n\u003cp\u003eIf the relief valve sits on the tank lid, you need this one. If it sits on the pump assembly, you need NA1610.\u003c\/p\u003e\n\u003ch3\u003eIs it Viton?\u003c\/h3\u003e\n\u003cp\u003eThe seals are, yes — fluoroelastomer. That is the main difference from the old-generation valve and it matters if you run solvent-bearing chemistry.\u003c\/p\u003e\n\u003ch3\u003eCan I use it with an acid rinse?\u003c\/h3\u003e\n\u003cp\u003eChapin lists a separate acid-service version of this valve. Until we can confirm which one we stock, we are not going to tell you it is acid-rated. Contact us first.\u003c\/p\u003e\n\u003ch3\u003eWhat pressure does it vent at?\u003c\/h3\u003e\n\u003cp\u003e40 to 60 psi. Chapin do not publish it; we have confirmed it through our own supply channel.\u003c\/p\u003e\n\u003ch3\u003eWill it fit my old sprayer if I just swap it over?\u003c\/h3\u003e\n\u003cp\u003eNo. The generations differ beyond the valve itself.\u003c\/p\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ccwonline.com.au\/products\/na1610-pressure-relief-valve-as202-as204-as16\"\u003ePressure Relief Valve NA1610 (old style)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ccwonline.com.au\/products\/pump-assy-as202-4-newer-versions\"\u003eTWBS Pump Assembly (NA1616)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ccwonline.com.au\/products\/twbs-the-worlds-best-sprayer-8ltr\"\u003eHydro-Force TWBS Sprayer 8 Ltr (AS202)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ccwonline.com.au\/products\/na1417-viton-o-ring-pump-barrel-as202-as204\"\u003eViton O-Ring Pump Barrel (NA1417)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/ccwonline.com.au\/products\/na2256-viton-check-valve\"\u003eViton Check Valve (NA2256)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat We See in the Field\u003c\/h2\u003e\n\u003cp\u003eIf a pressure relief valve is venting, treat that as information instead of defeating the valve. First confirm the sprayer has not been over-pumped and the valve is clean and correctly seated; never plug or modify a safety relief to get 'a bit more pressure'.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eRunning acid through your sprayer? Talk to us before ordering — there is a variant of this valve for that and we want to send you the right one.\u003c\/p\u003e","brand":"Hydroforce","offers":[{"title":"EACH","offer_id":19029226127419,"sku":"NA2310","price":50.82,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2179\/6391\/products\/Pressure-Relief-Valve-for-Chapham-Sprayers-AS202-AS204.jpg?v=1780550831","url":"https:\/\/ccwonline.com.au\/products\/kit-relief-valve-chapin-as202-204-new-style","provider":"Carpet Cleaners Warehouse","version":"1.0","type":"link"}