{"product_id":"rain-bird-anti-siphon-irrigation-valve-1-1-f-f-threaded-with-flow-control-patented-vacuum-breaker","title":"Rain Bird Anti-Siphon Irrigation Valve 1\" — 1\" F\/F threaded with flow control \u0026 patented vacuum breaker","description":"\u003cp\u003e\u003cstrong\u003eRain Bird DASASVF100 is a professional-grade 1\" anti-siphon irrigation valve with built-in flow control and a patented vacuum breaker for reliable above-ground backflow protection.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis 1\" threaded female x female anti-siphon valve is engineered for commercial and residential sprinkler zones that require dependable shutoff, easy fine-tuning of flow, and built-in backflow prevention when installed correctly above ground. The DASASVF100 combines a reverse-flow diaphragm design, a top-mounted flow-control knob, and a low-power encapsulated solenoid to deliver long-lasting service in demanding water conditions. It accepts standard 24 VAC irrigation controllers and meets recognized plumbing and safety listings.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this valve prevent backflow in an above-ground installation?\u003c\/h3\u003e\n\u003cp\u003eThe valve integrates Rain Bird’s patented vacuum breaker with a bleed screw to stop water from being siphoned back into the supply line when the valve is installed at least 6\" above the highest downstream sprinkler. The vacuum breaker operates automatically during normal use but can be opened manually for maintenance or flushing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented vacuum breaker with manual\/automatic bleed screw\u003c\/li\u003e\n  \u003cli\u003eRequirement: mount at least 6\" above the highest sprinkler head\u003c\/li\u003e\n  \u003cli\u003eDesigned to prevent backflow when installed per instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat features help the DASASVF100 perform in harsh water conditions?\u003c\/h3\u003e\n\u003cp\u003eThe valve uses a Buna-N (nitrile) diaphragm and a captive spring with a water filter to resist degradation from typical irrigation water. A reverse-flow design reduces stress on the diaphragm, helping the valve remain closed even if the diaphragm is compromised.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBuna-N diaphragm for chemical and wear resistance\u003c\/li\u003e\n  \u003cli\u003eCaptive spring and integrated filter to block debris\u003c\/li\u003e\n  \u003cli\u003eReverse-flow architecture that reduces diaphragm strain\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I control flow precisely for better sprinkler performance?\u003c\/h3\u003e\n\u003cp\u003eYes—the valve includes a top-mounted, easy-turn flow control knob that lets you dial back or increase flow to optimize nozzle performance and reduce misting or overspray. For low-flow or drip systems below 3 GPM, install a 200-mesh filter upstream to protect the valve and ensure correct operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTop-mounted flow control knob for quick on-site adjustments\u003c\/li\u003e\n  \u003cli\u003eFlow range: 0.2 to 40 GPM for flexibility across zone sizes\u003c\/li\u003e\n  \u003cli\u003eRecommendation: add a 200-mesh filter for flows under 3 GPM\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the electrical and mechanical specs I should know?\u003c\/h3\u003e\n\u003cp\u003eThe DASASVF100 runs on standard 24 VAC irrigation controllers and uses a low-power encapsulated solenoid with a captured plunger for extended life. Mechanically the valve is threaded 1\" female inlet and outlet, uses stainless fasteners, and operates across a broad pressure range.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e24 VAC compatible with common irrigation timers\/controllers\u003c\/li\u003e\n  \u003cli\u003eOperating pressure: 15 to 150 psi\u003c\/li\u003e\n  \u003cli\u003e1\" female pipe thread (FPT) inlet and outlet with stainless screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this valve for? Installers, landscapers, and homeowners who need a durable above-ground anti-siphon solution for medium to large sprinkler zones will value the DASASVF100. It suits new systems and replacements where a threaded 1\" valve is required, especially in environments with moderate debris or variable water quality. Choose this model if you want tool-free flow adjustment, proven vacuum-breaker protection, and a robust solenoid for long service life.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eProfessional grade 1\" anti-siphon valve with flow control; compatible with any standard sprinkler timer\u003c\/li\u003e\n  \u003cli\u003eDesigned for above ground installation, will prevent back flow when properly installed 6\" above highest sprinkler head\u003c\/li\u003e\n  \u003cli\u003eOperates automatically or manually with manual bleed screw\u003c\/li\u003e\n  \u003cli\u003eReverse Flow design reduces stress on diaphragm for dependable operation\u003c\/li\u003e\n  \u003cli\u003eEnergy efficient, low power encapsulated solenoid with captured plunger\u003c\/li\u003e\n  \u003cli\u003eBuna-N diaphragm provides superior performance in harsh water environments\u003c\/li\u003e\n  \u003cli\u003eFlow Range 0.2 to 40 GPM; for less than 3 GPM flow or Drip applications install a 200 mesh filter before the valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this valve work with my 24V sprinkler controller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The DASASVF100 operates on standard 24 VAC irrigation controllers used widely in residential and commercial systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this valve for drip irrigation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if flow exceeds 3 GPM; for below 3 GPM or drip systems install a 200-mesh filter upstream of the valve.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Rain Bird","offers":[{"title":"Default Title","offer_id":56831847596372,"sku":"B00004RAB0","price":46.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/rain-bird-dasasvf100-front-view.jpg?v=1787020739","url":"https:\/\/gardenluxe.co.uk\/products\/rain-bird-anti-siphon-irrigation-valve-1-1-f-f-threaded-with-flow-control-patented-vacuum-breaker","provider":"Gardenluxe Uk","version":"1.0","type":"link"}